ReactiveMongoTemplate (Spring Data MongoDB

java.lang.Object
- org.springframework.data.mongodb.core.ReactiveMongoTemplate

All Implemented Interfaces:

Aware, ApplicationContextAware, ReactiveAggregationOperation, ReactiveFindOperation, ReactiveFluentMongoOperations, ReactiveInsertOperation, ReactiveMapReduceOperation, ReactiveMongoOperations, ReactiveRemoveOperation, ReactiveUpdateOperation
```
public class ReactiveMongoTemplate
extends Object
implements ReactiveMongoOperations, ApplicationContextAware
```
Primary implementation of ReactiveMongoOperations. It simplifies the use of Reactive MongoDB usage and helps to avoid common errors. It executes core MongoDB workflow, leaving application code to provide Document and extract results. This class executes BSON queries or updates, initiating iteration over FindPublisher and catching MongoDB exceptions and translating them to the generic, more informative exception hierarchy defined in the org.springframework.dao package. Can be used within a service implementation via direct instantiation with a SimpleReactiveMongoDatabaseFactory reference, or get prepared in an application context and given to services as bean reference. Note: The SimpleReactiveMongoDatabaseFactory should always be configured as a bean in the application context, in the first case given to the service directly, in the second case to the prepared template.

Since:

2.0

Author:

Mark Paluch, Christoph Strobl

Nested Class Summary
- Nested classes/interfaces inherited from interface org.springframework.data.mongodb.core.ReactiveFindOperation
  ReactiveFindOperation.DistinctWithProjection, ReactiveFindOperation.DistinctWithQuery<T>, ReactiveFindOperation.FindDistinct, ReactiveFindOperation.FindWithCollection<T>, ReactiveFindOperation.FindWithProjection<T>, ReactiveFindOperation.FindWithQuery<T>, ReactiveFindOperation.ReactiveFind<T>, ReactiveFindOperation.TerminatingDistinct<T>, ReactiveFindOperation.TerminatingFind<T>, ReactiveFindOperation.TerminatingFindNear<T>
- Nested classes/interfaces inherited from interface org.springframework.data.mongodb.core.ReactiveInsertOperation
  ReactiveInsertOperation.InsertWithCollection<T>, ReactiveInsertOperation.ReactiveInsert<T>, ReactiveInsertOperation.TerminatingInsert<T>
- Nested classes/interfaces inherited from interface org.springframework.data.mongodb.core.ReactiveUpdateOperation
  ReactiveUpdateOperation.FindAndModifyWithOptions<T>, ReactiveUpdateOperation.FindAndReplaceWithOptions<T>, ReactiveUpdateOperation.FindAndReplaceWithProjection<T>, ReactiveUpdateOperation.ReactiveUpdate<T>, ReactiveUpdateOperation.TerminatingFindAndModify<T>, ReactiveUpdateOperation.TerminatingFindAndReplace<T>, ReactiveUpdateOperation.TerminatingUpdate<T>, ReactiveUpdateOperation.UpdateWithCollection<T>, ReactiveUpdateOperation.UpdateWithQuery<T>, ReactiveUpdateOperation.UpdateWithUpdate<T>
- Nested classes/interfaces inherited from interface org.springframework.data.mongodb.core.ReactiveRemoveOperation
  ReactiveRemoveOperation.ReactiveRemove<T>, ReactiveRemoveOperation.RemoveWithCollection<T>, ReactiveRemoveOperation.RemoveWithQuery<T>, ReactiveRemoveOperation.TerminatingRemove<T>
- Nested classes/interfaces inherited from interface org.springframework.data.mongodb.core.ReactiveAggregationOperation
  ReactiveAggregationOperation.AggregationOperationWithAggregation<T>, ReactiveAggregationOperation.AggregationOperationWithCollection<T>, ReactiveAggregationOperation.ReactiveAggregation<T>, ReactiveAggregationOperation.TerminatingAggregationOperation<T>
- Nested classes/interfaces inherited from interface org.springframework.data.mongodb.core.ReactiveMapReduceOperation
  ReactiveMapReduceOperation.MapReduceWithCollection<T>, ReactiveMapReduceOperation.MapReduceWithMapFunction<T>, ReactiveMapReduceOperation.MapReduceWithOptions<T>, ReactiveMapReduceOperation.MapReduceWithProjection<T>, ReactiveMapReduceOperation.MapReduceWithQuery<T>, ReactiveMapReduceOperation.MapReduceWithReduceFunction<T>, ReactiveMapReduceOperation.ReactiveMapReduce<T>, ReactiveMapReduceOperation.TerminatingMapReduce<T>

Field Summary

Fields
Modifier and Type Field and Description

static DbRefResolver NO_OP_REF_RESOLVER

Fields
Modifier and Type	Field and Description
`static DbRefResolver`	`NO_OP_REF_RESOLVER`

Constructor Summary

Constructors
Constructor and Description
`ReactiveMongoTemplate(com.mongodb.reactivestreams.client.MongoClient mongoClient, String databaseName)` Constructor used for a basic template configuration.
`ReactiveMongoTemplate(ReactiveMongoDatabaseFactory mongoDatabaseFactory)` Constructor used for a basic template configuration.
`ReactiveMongoTemplate(ReactiveMongoDatabaseFactory mongoDatabaseFactory, MongoConverter mongoConverter)` Constructor used for a basic template configuration.
`ReactiveMongoTemplate(ReactiveMongoDatabaseFactory mongoDatabaseFactory, MongoConverter mongoConverter, Consumer<Throwable> subscriptionExceptionHandler)` Constructor used for a basic template configuration.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`<O> reactor.core.publisher.Flux<O>`	`aggregate(Aggregation aggregation, Class<?> inputType, Class<O> outputType)` Execute an aggregation operation.
`<O> reactor.core.publisher.Flux<O>`	`aggregate(Aggregation aggregation, String collectionName, Class<O> outputType)` Execute an aggregation operation.
`protected <O> reactor.core.publisher.Flux<O>`	`aggregate(Aggregation aggregation, String collectionName, Class<O> outputType, AggregationOperationContext context)`
`<O> reactor.core.publisher.Flux<O>`	`aggregate(TypedAggregation<?> aggregation, Class<O> outputType)` Execute an aggregation operation.
`<O> reactor.core.publisher.Flux<O>`	`aggregate(TypedAggregation<?> aggregation, String inputCollectionName, Class<O> outputType)` Execute an aggregation operation.
`<T> ReactiveAggregationOperation.ReactiveAggregation<T>`	`aggregateAndReturn(Class<T> domainType)` Start creating an aggregation operation that returns results mapped to the given domain type.
`<T> reactor.core.publisher.Flux<ChangeStreamEvent<T>>`	`changeStream(String database, String collectionName, ChangeStreamOptions options, Class<T> targetType)` Subscribe to a MongoDB Change Stream via the reactive infrastructure.
`<T> reactor.core.publisher.Mono<Boolean>`	`collectionExists(Class<T> entityClass)` Check to see if a collection with a name indicated by the entity class exists.
`reactor.core.publisher.Mono<Boolean>`	`collectionExists(String collectionName)` Check to see if a collection with a given name exists.
`protected com.mongodb.client.model.CreateCollectionOptions`	`convertToCreateCollectionOptions(CollectionOptions collectionOptions)`
`protected com.mongodb.client.model.CreateCollectionOptions`	`convertToCreateCollectionOptions(CollectionOptions collectionOptions, Class<?> entityType)`
`reactor.core.publisher.Mono<Long>`	`count(Query query, Class<?> entityClass)` Returns the number of documents for the given `Query` by querying the collection of the given entity class.
`reactor.core.publisher.Mono<Long>`	`count(Query query, Class<?> entityClass, String collectionName)` Returns the number of documents for the given `Query` by querying the given collection using the given entity class to map the given `Query`.
`reactor.core.publisher.Mono<Long>`	`count(Query query, String collectionName)` Returns the number of documents for the given `Query` querying the given collection.
`<T> reactor.core.publisher.Mono<com.mongodb.reactivestreams.client.MongoCollection<org.bson.Document>>`	`createCollection(Class<T> entityClass)` Create an uncapped collection with a name based on the provided entity class.
`<T> reactor.core.publisher.Mono<com.mongodb.reactivestreams.client.MongoCollection<org.bson.Document>>`	`createCollection(Class<T> entityClass, CollectionOptions collectionOptions)` Create a collection with a name based on the provided entity class using the options.
`reactor.core.publisher.Mono<com.mongodb.reactivestreams.client.MongoCollection<org.bson.Document>>`	`createCollection(String collectionName)` Create an uncapped collection with the provided name.
`reactor.core.publisher.Mono<com.mongodb.reactivestreams.client.MongoCollection<org.bson.Document>>`	`createCollection(String collectionName, CollectionOptions collectionOptions)` Create a collection with the provided name and options.
`<T> reactor.core.publisher.Flux<T>`	`createFlux(ReactiveDatabaseCallback<T> callback)` Create a reusable Flux for a `ReactiveDatabaseCallback`.
`<T> reactor.core.publisher.Flux<T>`	`createFlux(String collectionName, ReactiveCollectionCallback<T> callback)` Create a reusable `Flux` for the `collectionName` and `ReactiveCollectionCallback`.
`<T> reactor.core.publisher.Mono<T>`	`createMono(ReactiveDatabaseCallback<T> callback)` Create a reusable Mono for a `ReactiveDatabaseCallback`.
`<T> reactor.core.publisher.Mono<T>`	`createMono(String collectionName, ReactiveCollectionCallback<T> callback)` Create a reusable `Mono` for the `collectionName` and `ReactiveCollectionCallback`.
`protected reactor.core.publisher.Mono<com.mongodb.reactivestreams.client.MongoCollection<org.bson.Document>>`	`doCreateCollection(String collectionName, com.mongodb.client.model.CreateCollectionOptions collectionOptions)` Create the specified collection using the provided options
`protected <S,T> reactor.core.publisher.Flux<T>`	`doFind(String collectionName, org.bson.Document query, org.bson.Document fields, Class<S> entityClass, org.springframework.data.mongodb.core.FindPublisherPreparer preparer, org.springframework.data.mongodb.core.ReactiveMongoTemplate.DocumentCallback<T> objectCallback)`
`protected <T> reactor.core.publisher.Flux<T>`	`doFind(String collectionName, org.bson.Document query, org.bson.Document fields, Class<T> entityClass)` Map the results of an ad-hoc query on the default MongoDB collection to a List using the template's converter.
`protected <T> reactor.core.publisher.Flux<T>`	`doFind(String collectionName, org.bson.Document query, org.bson.Document fields, Class<T> entityClass, org.springframework.data.mongodb.core.FindPublisherPreparer preparer)` Map the results of an ad-hoc query on the default MongoDB collection to a List of the specified type.
`protected <T> reactor.core.publisher.Flux<T>`	`doFindAndDelete(String collectionName, Query query, Class<T> entityClass)` Retrieve and remove all documents matching the given `query` by calling `find(Query, Class, String)` and `remove(Query, Class, String)`, whereas the `Query` for `remove(Query, Class, String)` is constructed out of the find result.
`protected <T> reactor.core.publisher.Mono<T>`	`doFindAndModify(String collectionName, org.bson.Document query, org.bson.Document fields, org.bson.Document sort, Class<T> entityClass, Update update, FindAndModifyOptions options)`
`protected <T> reactor.core.publisher.Mono<T>`	`doFindAndRemove(String collectionName, org.bson.Document query, org.bson.Document fields, org.bson.Document sort, Collation collation, Class<T> entityClass)` Map the results of an ad-hoc query on the default MongoDB collection to an object using the template's converter.
`protected <T> reactor.core.publisher.Mono<T>`	`doFindAndReplace(String collectionName, org.bson.Document mappedQuery, org.bson.Document mappedFields, org.bson.Document mappedSort, com.mongodb.client.model.Collation collation, Class<?> entityType, org.bson.Document replacement, FindAndReplaceOptions options, Class<T> resultType)` Customize this part for findAndReplace.
`protected <T> reactor.core.publisher.Mono<T>`	`doFindOne(String collectionName, org.bson.Document query, org.bson.Document fields, Class<T> entityClass, Collation collation)` Map the results of an ad-hoc query on the default MongoDB collection to an object using the template's converter.
`protected com.mongodb.reactivestreams.client.MongoDatabase`	`doGetDatabase()`
`protected <T> reactor.core.publisher.Mono<T>`	`doInsert(String collectionName, T objectToSave, MongoWriter<Object> writer)`
`protected <T> reactor.core.publisher.Flux<T>`	`doInsertAll(Collection<? extends T> listToSave, MongoWriter<Object> writer)`
`protected <T> reactor.core.publisher.Flux<T>`	`doInsertBatch(String collectionName, Collection<? extends T> batchToSave, MongoWriter<Object> writer)`
`protected <T> reactor.core.publisher.Mono<com.mongodb.client.result.DeleteResult>`	`doRemove(String collectionName, Query query, Class<T> entityClass)`
`protected <T> reactor.core.publisher.Mono<T>`	`doSave(String collectionName, T objectToSave, MongoWriter<Object> writer)`
`protected reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult>`	`doUpdate(String collectionName, Query query, Update update, Class<?> entityClass, boolean upsert, boolean multi)`
`<T> reactor.core.publisher.Mono<Void>`	`dropCollection(Class<T> entityClass)` Drop the collection with the name indicated by the entity class.
`reactor.core.publisher.Mono<Void>`	`dropCollection(String collectionName)` Drop the collection with the given name.
`protected void`	`ensureNotIterable(Object o)`
`<T> reactor.core.publisher.Flux<T>`	`execute(Class<?> entityClass, ReactiveCollectionCallback<T> action)` Executes the given `ReactiveCollectionCallback` on the entity collection of the specified class.
`<T> reactor.core.publisher.Flux<T>`	`execute(ReactiveDatabaseCallback<T> action)` Executes a `ReactiveDatabaseCallback` translating any exceptions as necessary.
`<T> reactor.core.publisher.Flux<T>`	`execute(String collectionName, ReactiveCollectionCallback<T> callback)` Executes the given `ReactiveCollectionCallback` on the collection of the given name.
`reactor.core.publisher.Mono<org.bson.Document>`	`executeCommand(org.bson.Document command)` Execute a MongoDB command.
`reactor.core.publisher.Mono<org.bson.Document>`	`executeCommand(org.bson.Document command, com.mongodb.ReadPreference readPreference)` Execute a MongoDB command.
`reactor.core.publisher.Mono<org.bson.Document>`	`executeCommand(String jsonCommand)` Execute the a MongoDB command expressed as a JSON string.
`reactor.core.publisher.Mono<Boolean>`	`exists(Query query, Class<?> entityClass)` Determine result of given `Query` contains at least one element.
`reactor.core.publisher.Mono<Boolean>`	`exists(Query query, Class<?> entityClass, String collectionName)` Determine result of given `Query` contains at least one element.
`reactor.core.publisher.Mono<Boolean>`	`exists(Query query, String collectionName)` Determine result of given `Query` contains at least one element.
`<T> reactor.core.publisher.Flux<T>`	`find(Query query, Class<T> entityClass)` Map the results of an ad-hoc query on the collection for the entity class to a `Flux` of the specified type.
`<T> reactor.core.publisher.Flux<T>`	`find(Query query, Class<T> entityClass, String collectionName)` Map the results of an ad-hoc query on the specified collection to a `Flux` of the specified type.
`<T> reactor.core.publisher.Flux<T>`	`findAll(Class<T> entityClass)` Query for a `Flux` of objects of type T from the collection used by the entity class.
`<T> reactor.core.publisher.Flux<T>`	`findAll(Class<T> entityClass, String collectionName)` Query for a `Flux` of objects of type T from the specified collection.
`<T> reactor.core.publisher.Flux<T>`	`findAllAndRemove(Query query, Class<T> entityClass)` Returns and removes all documents matching the given query form the collection used to store the entityClass.
`<T> reactor.core.publisher.Flux<T>`	`findAllAndRemove(Query query, Class<T> entityClass, String collectionName)` Returns and removes all documents that match the provided query document criteria from the the collection used to store the entityClass.
`<T> reactor.core.publisher.Flux<T>`	`findAllAndRemove(Query query, String collectionName)` Returns and removes all documents form the specified collection that match the provided query.
`<T> reactor.core.publisher.Mono<T>`	`findAndModify(Query query, Update update, Class<T> entityClass)` Triggers findAndModify to apply provided `Update` on documents matching `Criteria` of given `Query`.
`<T> reactor.core.publisher.Mono<T>`	`findAndModify(Query query, Update update, Class<T> entityClass, String collectionName)` Triggers findAndModify to apply provided `Update` on documents matching `Criteria` of given `Query`.
`<T> reactor.core.publisher.Mono<T>`	`findAndModify(Query query, Update update, FindAndModifyOptions options, Class<T> entityClass)` Triggers findAndModify to apply provided `Update` on documents matching `Criteria` of given `Query` taking `FindAndModifyOptions` into account.
`<T> reactor.core.publisher.Mono<T>`	`findAndModify(Query query, Update update, FindAndModifyOptions options, Class<T> entityClass, String collectionName)` Triggers findAndModify to apply provided `Update` on documents matching `Criteria` of given `Query` taking `FindAndModifyOptions` into account.
`<T> reactor.core.publisher.Mono<T>`	`findAndRemove(Query query, Class<T> entityClass)` Map the results of an ad-hoc query on the collection for the entity type to a single instance of an object of the specified type.
`<T> reactor.core.publisher.Mono<T>`	`findAndRemove(Query query, Class<T> entityClass, String collectionName)` Map the results of an ad-hoc query on the specified collection to a single instance of an object of the specified type.
`<S,T> reactor.core.publisher.Mono<T>`	`findAndReplace(Query query, S replacement, FindAndReplaceOptions options, Class<S> entityType, String collectionName, Class<T> resultType)` Triggers findOneAndReplace to replace a single document matching `Criteria` of given `Query` with the `replacement` document taking `FindAndReplaceOptions` into account.
`<T> reactor.core.publisher.Mono<T>`	`findById(Object id, Class<T> entityClass)` Returns a document with the given id mapped onto the given class.
`<T> reactor.core.publisher.Mono<T>`	`findById(Object id, Class<T> entityClass, String collectionName)` Returns the document with the given id from the given collection mapped onto the given target class.
`<T> reactor.core.publisher.Flux<T>`	`findDistinct(Query query, String field, Class<?> entityClass, Class<T> resultClass)` Finds the distinct values for a specified field across a single `MongoCollection` or view and returns the results in a `Flux`.
`<T> reactor.core.publisher.Flux<T>`	`findDistinct(Query query, String field, String collectionName, Class<?> entityClass, Class<T> resultClass)` Finds the distinct values for a specified field across a single `MongoCollection` or view and returns the results in a `Flux`.
`<T> reactor.core.publisher.Mono<T>`	`findOne(Query query, Class<T> entityClass)` Map the results of an ad-hoc query on the collection for the entity class to a single instance of an object of the specified type.
`<T> reactor.core.publisher.Mono<T>`	`findOne(Query query, Class<T> entityClass, String collectionName)` Map the results of an ad-hoc query on the specified collection to a single instance of an object of the specified type.
`protected <T> reactor.core.publisher.Flux<GeoResult<T>>`	`geoNear(NearQuery near, Class<?> entityClass, String collectionName, Class<T> returnType)`
`<T> reactor.core.publisher.Flux<GeoResult<T>>`	`geoNear(NearQuery near, Class<T> entityClass)` Returns `Flux` of `GeoResult` for all entities matching the given `NearQuery`.
`<T> reactor.core.publisher.Flux<GeoResult<T>>`	`geoNear(NearQuery near, Class<T> entityClass, String collectionName)` Returns `Flux` of `GeoResult` for all entities matching the given `NearQuery`.
`com.mongodb.reactivestreams.client.MongoCollection<org.bson.Document>`	`getCollection(String collectionName)` Get a `MongoCollection` by name.
`String`	`getCollectionName(Class<?> entityClass)` The collection name used for the specified class by this template.
`reactor.core.publisher.Flux<String>`	`getCollectionNames()` A set of collection names.
`MongoConverter`	`getConverter()` Returns the default `MongoConverter`.
`com.mongodb.reactivestreams.client.MongoDatabase`	`getMongoDatabase()`
`ReactiveIndexOperations`	`indexOps(Class<?> entityClass)` Returns the reactive operations that can be performed on indexes
`ReactiveIndexOperations`	`indexOps(String collectionName)` Returns the reactive operations that can be performed on indexes
`<T> ReactiveInsertOperation.ReactiveInsert<T>`	`insert(Class<T> domainType)` Start creating an insert operation for given domainType.
`<T> reactor.core.publisher.Flux<T>`	`insert(Collection<? extends T> batchToSave, Class<?> entityClass)` Insert a Collection of objects into a collection in a single batch write to the database.
`<T> reactor.core.publisher.Flux<T>`	`insert(Collection<? extends T> batchToSave, String collectionName)` Insert a batch of objects into the specified collection in a single batch write to the database.
`<T> reactor.core.publisher.Mono<T>`	`insert(reactor.core.publisher.Mono<? extends T> objectToSave)` Insert the object into the collection for the entity type of the object to save.
`<T> reactor.core.publisher.Mono<T>`	`insert(T objectToSave)` Insert the object into the collection for the entity type of the object to save.
`<T> reactor.core.publisher.Mono<T>`	`insert(T objectToSave, String collectionName)` Insert the object into the specified collection.
`<T> reactor.core.publisher.Flux<T>`	`insertAll(Collection<? extends T> objectsToSave)` Insert a mixed Collection of objects into a database collection determining the collection name to use based on the class.
`<T> reactor.core.publisher.Flux<T>`	`insertAll(reactor.core.publisher.Mono<? extends Collection<? extends T>> objectsToSave)` Insert a mixed Collection of objects into a database collection determining the collection name to use based on the class.
`<T> reactor.core.publisher.Flux<T>`	`insertAll(reactor.core.publisher.Mono<? extends Collection<? extends T>> batchToSave, Class<?> entityClass)` Insert a Collection of objects into a collection in a single batch write to the database.
`<T> reactor.core.publisher.Flux<T>`	`insertAll(reactor.core.publisher.Mono<? extends Collection<? extends T>> batchToSave, String collectionName)` Insert objects into the specified collection in a single batch write to the database.
`protected reactor.core.publisher.Mono<Object>`	`insertDocument(String collectionName, org.bson.Document dbDoc, Class<?> entityClass)`
`protected reactor.core.publisher.Flux<org.bson.types.ObjectId>`	`insertDocumentList(String collectionName, List<org.bson.Document> dbDocList)`
`ReactiveSessionScoped`	`inTransaction()` Initiate a new `ClientSession` and obtain a `session` bound instance of `ReactiveSessionScoped`.
`ReactiveSessionScoped`	`inTransaction(org.reactivestreams.Publisher<com.mongodb.reactivestreams.client.ClientSession> sessionProvider)` Obtain a `session` bound instance of `ReactiveSessionScoped`, start the transaction and bind the `ClientSession` provided by the given `Publisher` to each and every command issued against MongoDB.
`<T> ReactiveMapReduceOperation.ReactiveMapReduce<T>`	`mapReduce(Class<T> domainType)` Start creating a mapReduce operation for the given domainType.
`<T> reactor.core.publisher.Flux<T>`	`mapReduce(Query filterQuery, Class<?> domainType, Class<T> resultType, String mapFunction, String reduceFunction, MapReduceOptions options)` Execute a map-reduce operation.
`<T> reactor.core.publisher.Flux<T>`	`mapReduce(Query filterQuery, Class<?> domainType, String inputCollectionName, Class<T> resultType, String mapFunction, String reduceFunction, MapReduceOptions options)` Execute a map-reduce operation.
`protected <E extends MongoMappingEvent<T>,T> E`	`maybeEmitEvent(E event)`
`protected com.mongodb.reactivestreams.client.MongoCollection<org.bson.Document>`	`prepareCollection(com.mongodb.reactivestreams.client.MongoCollection<org.bson.Document> collection)` Prepare the collection before any processing is done using it.
`protected com.mongodb.reactivestreams.client.MongoDatabase`	`prepareDatabase(com.mongodb.reactivestreams.client.MongoDatabase database)`
`protected com.mongodb.WriteConcern`	`prepareWriteConcern(MongoAction mongoAction)` Prepare the WriteConcern before any processing is done using it.
`<T> ReactiveFindOperation.ReactiveFind<T>`	`query(Class<T> domainType)` Start creating a find operation for the given domainType.
`<T> ReactiveRemoveOperation.ReactiveRemove<T>`	`remove(Class<T> domainType)` Start creating a remove operation for the given domainType.
`reactor.core.publisher.Mono<com.mongodb.client.result.DeleteResult>`	`remove(reactor.core.publisher.Mono<? extends Object> objectToRemove)` Remove the given object from the collection by id.
`reactor.core.publisher.Mono<com.mongodb.client.result.DeleteResult>`	`remove(reactor.core.publisher.Mono<? extends Object> objectToRemove, String collectionName)` Removes the given object from the given collection.
`reactor.core.publisher.Mono<com.mongodb.client.result.DeleteResult>`	`remove(Object object)` Remove the given object from the collection by id.
`reactor.core.publisher.Mono<com.mongodb.client.result.DeleteResult>`	`remove(Object object, String collectionName)` Removes the given object from the given collection.
`reactor.core.publisher.Mono<com.mongodb.client.result.DeleteResult>`	`remove(Query query, Class<?> entityClass)` Remove all documents that match the provided query document criteria from the the collection used to store the entityClass.
`reactor.core.publisher.Mono<com.mongodb.client.result.DeleteResult>`	`remove(Query query, Class<?> entityClass, String collectionName)` Remove all documents that match the provided query document criteria from the the collection used to store the entityClass.
`reactor.core.publisher.Mono<com.mongodb.client.result.DeleteResult>`	`remove(Query query, String collectionName)` Remove all documents from the specified collection that match the provided query document criteria.
`<T> reactor.core.publisher.Mono<T>`	`save(reactor.core.publisher.Mono<? extends T> objectToSave)` Save the object to the collection for the entity type of the object to save.
`<T> reactor.core.publisher.Mono<T>`	`save(reactor.core.publisher.Mono<? extends T> objectToSave, String collectionName)` Save the object to the specified collection.
`<T> reactor.core.publisher.Mono<T>`	`save(T objectToSave)` Save the object to the collection for the entity type of the object to save.
`<T> reactor.core.publisher.Mono<T>`	`save(T objectToSave, String collectionName)` Save the object to the specified collection.
`protected reactor.core.publisher.Mono<Object>`	`saveDocument(String collectionName, org.bson.Document document, Class<?> entityClass)`
`void`	`setApplicationContext(ApplicationContext applicationContext)`
`void`	`setReadPreference(com.mongodb.ReadPreference readPreference)` Used by {@link #prepareCollection(MongoCollection)} to set the {@link ReadPreference} before any operations are performed.
`void`	`setWriteConcern(com.mongodb.WriteConcern writeConcern)` Configures the `WriteConcern` to be used with the template.
`void`	`setWriteConcernResolver(WriteConcernResolver writeConcernResolver)` Configures the `WriteConcernResolver` to be used with the template.
`void`	`setWriteResultChecking(WriteResultChecking resultChecking)` Configures the `WriteResultChecking` to be used with the template.
`<T> reactor.core.publisher.Flux<T>`	`tail(Query query, Class<T> entityClass)` Map the results of an ad-hoc query on the collection for the entity class to a stream of objects of the specified type.
`<T> reactor.core.publisher.Flux<T>`	`tail(Query query, Class<T> entityClass, String collectionName)` Map the results of an ad-hoc query on the collection for the entity class to a stream of objects of the specified type.
`<T> ReactiveUpdateOperation.ReactiveUpdate<T>`	`update(Class<T> domainType)` Start creating an update operation for the given domainType.
`reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult>`	`updateFirst(Query query, Update update, Class<?> entityClass)` Updates the first object that is found in the collection of the entity class that matches the query document with the provided update document.
`reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult>`	`updateFirst(Query query, Update update, Class<?> entityClass, String collectionName)` Updates the first object that is found in the specified collection that matches the query document criteria with the provided updated document.
`reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult>`	`updateFirst(Query query, Update update, String collectionName)` Updates the first object that is found in the specified collection that matches the query document criteria with the provided updated document.
`reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult>`	`updateMulti(Query query, Update update, Class<?> entityClass)` Updates all objects that are found in the collection for the entity class that matches the query document criteria with the provided updated document.
`reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult>`	`updateMulti(Query query, Update update, Class<?> entityClass, String collectionName)` Updates all objects that are found in the collection for the entity class that matches the query document criteria with the provided updated document.
`reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult>`	`updateMulti(Query query, Update update, String collectionName)` Updates all objects that are found in the specified collection that matches the query document criteria with the provided updated document.
`reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult>`	`upsert(Query query, Update update, Class<?> entityClass)` Performs an upsert.
`reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult>`	`upsert(Query query, Update update, Class<?> entityClass, String collectionName)` Performs an upsert.
`reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult>`	`upsert(Query query, Update update, String collectionName)` Performs an upsert.
`ReactiveMongoOperations`	`withSession(com.mongodb.reactivestreams.client.ClientSession session)` Obtain a `ClientSession` bound instance of `ReactiveMongoOperations`.
`ReactiveSessionScoped`	`withSession(com.mongodb.ClientSessionOptions sessionOptions)` Obtain a `session` bound instance of `SessionScoped` binding a new `ClientSession` with given sessionOptions to each and every command issued against MongoDB.
`ReactiveSessionScoped`	`withSession(org.reactivestreams.Publisher<com.mongodb.reactivestreams.client.ClientSession> sessionProvider)` Obtain a `session` bound instance of `ReactiveSessionScoped` binding the `ClientSession` provided by the given `Publisher` to each and every command issued against MongoDB.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.springframework.data.mongodb.core.ReactiveMongoOperations
changeStream, changeStream, findAndReplace, findAndReplace, findAndReplace, findAndReplace, findAndReplace, findAndReplace, findDistinct, findDistinct, withSession

- Field Detail
  - NO_OP_REF_RESOLVER
```
public static final DbRefResolver NO_OP_REF_RESOLVER
```
- Constructor Detail
  - ReactiveMongoTemplate
```
public ReactiveMongoTemplate(com.mongodb.reactivestreams.client.MongoClient mongoClient,
                             String databaseName)
```
    Constructor used for a basic template configuration.
    
    Parameters:
    
    mongoClient - must not be null.
    
    databaseName - must not be null or empty.
  - ReactiveMongoTemplate
```
public ReactiveMongoTemplate(ReactiveMongoDatabaseFactory mongoDatabaseFactory)
```
    Constructor used for a basic template configuration.
    
    Parameters:
    
    mongoDatabaseFactory - must not be null.
  - ReactiveMongoTemplate
```
public ReactiveMongoTemplate(ReactiveMongoDatabaseFactory mongoDatabaseFactory,
                             @Nullable
                             MongoConverter mongoConverter)
```
    Constructor used for a basic template configuration.
    
    Parameters:
    
    mongoDatabaseFactory - must not be null.
    
    mongoConverter - can be null.
  - ReactiveMongoTemplate
```
public ReactiveMongoTemplate(ReactiveMongoDatabaseFactory mongoDatabaseFactory,
                             @Nullable
                             MongoConverter mongoConverter,
                             Consumer<Throwable> subscriptionExceptionHandler)
```
    Constructor used for a basic template configuration.
    
    Parameters:
    
    mongoDatabaseFactory - must not be null.
    
    mongoConverter - can be null.
    
    subscriptionExceptionHandler - exception handler called by Flux.doOnError(Consumer) on reactive type materialization via Publisher.subscribe(Subscriber). This callback is used during non-blocking subscription of e.g. index creation Publishers. Must not be null.
    
    Since:
    
    2.1
- Method Detail
  - setWriteResultChecking
```
public void setWriteResultChecking(@Nullable
                                   WriteResultChecking resultChecking)
```
    Configures the WriteResultChecking to be used with the template. Setting null will reset the default of DEFAULT_WRITE_RESULT_CHECKING.
    
    Parameters:
    
    resultChecking -
  - setWriteConcern
```
public void setWriteConcern(@Nullable
                            com.mongodb.WriteConcern writeConcern)
```
    Configures the WriteConcern to be used with the template. If none is configured the WriteConcern configured on the MongoDbFactory will apply. If you configured a Mongo instance no WriteConcern will be used.
    
    Parameters:
    
    writeConcern - can be null.
  - setWriteConcernResolver
```
public void setWriteConcernResolver(@Nullable
                                    WriteConcernResolver writeConcernResolver)
```
    Configures the WriteConcernResolver to be used with the template.
    
    Parameters:
    
    writeConcernResolver - can be null.
  - setReadPreference
```
public void setReadPreference(com.mongodb.ReadPreference readPreference)
```
    Used by {@link #prepareCollection(MongoCollection)} to set the {@link ReadPreference} before any operations are performed.
    
    Parameters:
    
    readPreference -
  - setApplicationContext
```
public void setApplicationContext(ApplicationContext applicationContext)
                           throws BeansException
```
    Specified by:
    
    setApplicationContext in interface ApplicationContextAware
    
    Throws:
    
    BeansException
  - getConverter
```
public MongoConverter getConverter()
```
    Returns the default MongoConverter.
    
    Specified by:
    
    getConverter in interface ReactiveMongoOperations
    
    Returns:
  - indexOps
```
public ReactiveIndexOperations indexOps(String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Returns the reactive operations that can be performed on indexes
    
    Specified by:
    
    indexOps in interface ReactiveMongoOperations
    
    Parameters:
    
    collectionName - must not be null.
    
    Returns:
    
    index operations on the named collection
  - indexOps
```
public ReactiveIndexOperations indexOps(Class<?> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Returns the reactive operations that can be performed on indexes
    
    Specified by:
    
    indexOps in interface ReactiveMongoOperations
    
    Parameters:
    
    entityClass - must not be null.
    
    Returns:
    
    index operations on the named collection associated with the given entity class
  - getCollectionName
```
public String getCollectionName(Class<?> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    The collection name used for the specified class by this template.
    
    Specified by:
    
    getCollectionName in interface ReactiveMongoOperations
    
    Parameters:
    
    entityClass - must not be null.
    
    Returns:
  - executeCommand
```
public reactor.core.publisher.Mono<org.bson.Document> executeCommand(String jsonCommand)
```
    Description copied from interface: ReactiveMongoOperations
    
    Execute the a MongoDB command expressed as a JSON string. This will call the method JSON.parse that is part of the MongoDB driver to convert the JSON string to a Document. Any errors that result from executing this command will be converted into Spring's DAO exception hierarchy.
    
    Specified by:
    
    executeCommand in interface ReactiveMongoOperations
    
    Parameters:
    
    jsonCommand - a MongoDB command expressed as a JSON string.
    
    Returns:
    
    a result object returned by the action
  - executeCommand
```
public reactor.core.publisher.Mono<org.bson.Document> executeCommand(org.bson.Document command)
```
    Description copied from interface: ReactiveMongoOperations
    
    Execute a MongoDB command. Any errors that result from executing this command will be converted into Spring's DAO exception hierarchy.
    
    Specified by:
    
    executeCommand in interface ReactiveMongoOperations
    
    Parameters:
    
    command - a MongoDB command.
    
    Returns:
    
    a result object returned by the action
  - executeCommand
```
public reactor.core.publisher.Mono<org.bson.Document> executeCommand(org.bson.Document command,
                                                                     @Nullable
                                                                     com.mongodb.ReadPreference readPreference)
```
    Description copied from interface: ReactiveMongoOperations
    
    Execute a MongoDB command. Any errors that result from executing this command will be converted into Spring's data access exception hierarchy.
    
    Specified by:
    
    executeCommand in interface ReactiveMongoOperations
    
    Parameters:
    
    command - a MongoDB command, must not be null.
    
    readPreference - read preferences to use, can be null.
    
    Returns:
    
    a result object returned by the action.
  - execute
```
public <T> reactor.core.publisher.Flux<T> execute(Class<?> entityClass,
                                                  ReactiveCollectionCallback<T> action)
```
    Description copied from interface: ReactiveMongoOperations
    
    Executes the given ReactiveCollectionCallback on the entity collection of the specified class.
    Allows for returning a result object, that is a domain object or a collection of domain objects.
    
    Specified by:
    
    execute in interface ReactiveMongoOperations
    
    Type Parameters:
    
    T - return type.
    
    Parameters:
    
    entityClass - class that determines the collection to use. Must not be null.
    
    action - callback object that specifies the MongoDB action. Must not be null.
    
    Returns:
    
    a result object returned by the action or null.
  - execute
```
public <T> reactor.core.publisher.Flux<T> execute(ReactiveDatabaseCallback<T> action)
```
    Description copied from interface: ReactiveMongoOperations
    
    Executes a ReactiveDatabaseCallback translating any exceptions as necessary.
    Allows for returning a result object, that is a domain object or a collection of domain objects.
    
    Specified by:
    
    execute in interface ReactiveMongoOperations
    
    Type Parameters:
    
    T - return type.
    
    Parameters:
    
    action - callback object that specifies the MongoDB actions to perform on the passed in DB instance. Must not be null.
    
    Returns:
    
    a result object returned by the action
  - execute
```
public <T> reactor.core.publisher.Flux<T> execute(String collectionName,
                                                  ReactiveCollectionCallback<T> callback)
```
    Description copied from interface: ReactiveMongoOperations
    
    Executes the given ReactiveCollectionCallback on the collection of the given name.
    Allows for returning a result object, that is a domain object or a collection of domain objects.
    
    Specified by:
    
    execute in interface ReactiveMongoOperations
    
    Type Parameters:
    
    T - return type.
    
    Parameters:
    
    collectionName - the name of the collection that specifies which MongoCollection instance will be passed into. Must not be null or empty.
    
    callback - callback object that specifies the MongoDB action the callback action. Must not be null.
    
    Returns:
    
    a result object returned by the action or null.
  - withSession
```
public ReactiveSessionScoped withSession(org.reactivestreams.Publisher<com.mongodb.reactivestreams.client.ClientSession> sessionProvider)
```
    Description copied from interface: ReactiveMongoOperations
    
    Obtain a session bound instance of ReactiveSessionScoped binding the ClientSession provided by the given Publisher to each and every command issued against MongoDB.
    Note: It is up to the caller to manage the ClientSession lifecycle. Use ReactiveSessionScoped.execute(ReactiveSessionCallback, Consumer) to provide a hook for processing the ClientSession when done.
    
    Specified by:
    
    withSession in interface ReactiveMongoOperations
    
    Parameters:
    
    sessionProvider - must not be null.
    
    Returns:
    
    new instance of ReactiveSessionScoped. Never null.
  - inTransaction
```
public ReactiveSessionScoped inTransaction()
```
    Description copied from interface: ReactiveMongoOperations
    
    Initiate a new ClientSession and obtain a session bound instance of ReactiveSessionScoped. Starts the transaction and adds the ClientSession to each and every command issued against MongoDB.
    Each execution initiates a new managed transaction that is committed on success. Transactions are rolled back upon errors.
    
    Specified by:
    
    inTransaction in interface ReactiveMongoOperations
    
    Returns:
    
    new instance of ReactiveSessionScoped. Never null.
  - inTransaction
```
public ReactiveSessionScoped inTransaction(org.reactivestreams.Publisher<com.mongodb.reactivestreams.client.ClientSession> sessionProvider)
```
    Description copied from interface: ReactiveMongoOperations
    
    Obtain a session bound instance of ReactiveSessionScoped, start the transaction and bind the ClientSession provided by the given Publisher to each and every command issued against MongoDB.
    Each execution initiates a new managed transaction that is committed on success. Transactions are rolled back upon errors.
    
    Specified by:
    
    inTransaction in interface ReactiveMongoOperations
    
    Parameters:
    
    sessionProvider - must not be null.
    
    Returns:
    
    new instance of ReactiveSessionScoped. Never null.
  - withSession
```
public ReactiveMongoOperations withSession(com.mongodb.reactivestreams.client.ClientSession session)
```
    Description copied from interface: ReactiveMongoOperations
    
    Obtain a ClientSession bound instance of ReactiveMongoOperations.
    Note: It is up to the caller to manage the ClientSession lifecycle.
    
    Specified by:
    
    withSession in interface ReactiveMongoOperations
    
    Parameters:
    
    session - must not be null.
    
    Returns:
    
    ClientSession bound instance of ReactiveMongoOperations.
  - withSession
```
public ReactiveSessionScoped withSession(com.mongodb.ClientSessionOptions sessionOptions)
```
    Description copied from interface: ReactiveMongoOperations
    
    Obtain a session bound instance of SessionScoped binding a new ClientSession with given sessionOptions to each and every command issued against MongoDB.
    Note: It is up to the caller to manage the ClientSession lifecycle. Use ReactiveSessionScoped.execute(ReactiveSessionCallback, Consumer) to provide a hook for processing the ClientSession when done.
    
    Specified by:
    
    withSession in interface ReactiveMongoOperations
    
    Parameters:
    
    sessionOptions - must not be null.
    
    Returns:
    
    new instance of ReactiveSessionScoped. Never null.
  - createFlux
```
public <T> reactor.core.publisher.Flux<T> createFlux(ReactiveDatabaseCallback<T> callback)
```
    Create a reusable Flux for a ReactiveDatabaseCallback. It's up to the developer to choose to obtain a new Flux or to reuse the Flux.
    
    Parameters:
    
    callback - must not be null
    
    Returns:
    
    a Flux wrapping the ReactiveDatabaseCallback.
  - createMono
```
public <T> reactor.core.publisher.Mono<T> createMono(ReactiveDatabaseCallback<T> callback)
```
    Create a reusable Mono for a ReactiveDatabaseCallback. It's up to the developer to choose to obtain a new Flux or to reuse the Flux.
    
    Parameters:
    
    callback - must not be null
    
    Returns:
    
    a Mono wrapping the ReactiveDatabaseCallback.
  - createFlux
```
public <T> reactor.core.publisher.Flux<T> createFlux(String collectionName,
                                                     ReactiveCollectionCallback<T> callback)
```
    Create a reusable Flux for the collectionName and ReactiveCollectionCallback.
    
    Parameters:
    
    collectionName - must not be empty or null.
    
    callback - must not be null.
    
    Returns:
    
    a reusable Flux wrapping the ReactiveCollectionCallback.
  - createMono
```
public <T> reactor.core.publisher.Mono<T> createMono(String collectionName,
                                                     ReactiveCollectionCallback<T> callback)
```
    Create a reusable Mono for the collectionName and ReactiveCollectionCallback.
    
    Type Parameters:
    
    T -
    
    Parameters:
    
    collectionName - must not be empty or null.
    
    callback - must not be null.
    
    Returns:
    
    a reusable Mono wrapping the ReactiveCollectionCallback.
  - createCollection
```
public <T> reactor.core.publisher.Mono<com.mongodb.reactivestreams.client.MongoCollection<org.bson.Document>> createCollection(Class<T> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Create an uncapped collection with a name based on the provided entity class.
    
    Specified by:
    
    createCollection in interface ReactiveMongoOperations
    
    Parameters:
    
    entityClass - class that determines the collection to create.
    
    Returns:
    
    the created collection.
  - createCollection
```
public <T> reactor.core.publisher.Mono<com.mongodb.reactivestreams.client.MongoCollection<org.bson.Document>> createCollection(Class<T> entityClass,
                                                                                                                               @Nullable
                                                                                                                               CollectionOptions collectionOptions)
```
    Description copied from interface: ReactiveMongoOperations
    
    Create a collection with a name based on the provided entity class using the options.
    
    Specified by:
    
    createCollection in interface ReactiveMongoOperations
    
    Parameters:
    
    entityClass - class that determines the collection to create. Must not be null.
    
    collectionOptions - options to use when creating the collection.
    
    Returns:
    
    the created collection.
  - createCollection
```
public reactor.core.publisher.Mono<com.mongodb.reactivestreams.client.MongoCollection<org.bson.Document>> createCollection(String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Create an uncapped collection with the provided name.
    
    Specified by:
    
    createCollection in interface ReactiveMongoOperations
    
    Parameters:
    
    collectionName - name of the collection.
    
    Returns:
    
    the created collection.
  - createCollection
```
public reactor.core.publisher.Mono<com.mongodb.reactivestreams.client.MongoCollection<org.bson.Document>> createCollection(String collectionName,
                                                                                                                           @Nullable
                                                                                                                           CollectionOptions collectionOptions)
```
    Description copied from interface: ReactiveMongoOperations
    
    Create a collection with the provided name and options.
    
    Specified by:
    
    createCollection in interface ReactiveMongoOperations
    
    Parameters:
    
    collectionName - name of the collection. Must not be null nor empty.
    
    collectionOptions - options to use when creating the collection.
    
    Returns:
    
    the created collection.
  - getCollection
```
public com.mongodb.reactivestreams.client.MongoCollection<org.bson.Document> getCollection(String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Get a MongoCollection by name. The returned collection may not exists yet (except in local memory) and is created on first interaction with the server. Collections can be explicitly created via ReactiveMongoOperations.createCollection(Class). Please make sure to check if the collection exists first.
    Translate any exceptions as necessary.
    
    Specified by:
    
    getCollection in interface ReactiveMongoOperations
    
    Parameters:
    
    collectionName - name of the collection.
    
    Returns:
    
    an existing collection or one created on first server interaction.
  - collectionExists
```
public <T> reactor.core.publisher.Mono<Boolean> collectionExists(Class<T> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Check to see if a collection with a name indicated by the entity class exists.
    Translate any exceptions as necessary.
    
    Specified by:
    
    collectionExists in interface ReactiveMongoOperations
    
    Parameters:
    
    entityClass - class that determines the name of the collection. Must not be null.
    
    Returns:
    
    true if a collection with the given name is found, false otherwise.
  - collectionExists
```
public reactor.core.publisher.Mono<Boolean> collectionExists(String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Check to see if a collection with a given name exists.
    Translate any exceptions as necessary.
    
    Specified by:
    
    collectionExists in interface ReactiveMongoOperations
    
    Parameters:
    
    collectionName - name of the collection. Must not be null.
    
    Returns:
    
    true if a collection with the given name is found, false otherwise.
  - dropCollection
```
public <T> reactor.core.publisher.Mono<Void> dropCollection(Class<T> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Drop the collection with the name indicated by the entity class.
    Translate any exceptions as necessary.
    
    Specified by:
    
    dropCollection in interface ReactiveMongoOperations
    
    Parameters:
    
    entityClass - class that determines the collection to drop/delete. Must not be null.
  - dropCollection
```
public reactor.core.publisher.Mono<Void> dropCollection(String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Drop the collection with the given name.
    Translate any exceptions as necessary.
    
    Specified by:
    
    dropCollection in interface ReactiveMongoOperations
    
    Parameters:
    
    collectionName - name of the collection to drop/delete.
  - getCollectionNames
```
public reactor.core.publisher.Flux<String> getCollectionNames()
```
    Description copied from interface: ReactiveMongoOperations
    
    A set of collection names.
    
    Specified by:
    
    getCollectionNames in interface ReactiveMongoOperations
    
    Returns:
    
    Flux of collection names.
  - getMongoDatabase
```
public com.mongodb.reactivestreams.client.MongoDatabase getMongoDatabase()
```
  - doGetDatabase
```
protected com.mongodb.reactivestreams.client.MongoDatabase doGetDatabase()
```
  - findOne
```
public <T> reactor.core.publisher.Mono<T> findOne(Query query,
                                                  Class<T> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Map the results of an ad-hoc query on the collection for the entity class to a single instance of an object of the specified type.
    The object is converted from the MongoDB native representation using an instance of MongoConverter. Unless configured otherwise, an instance of MappingMongoConverter will be used.
    The query is specified as a Query which can be created either using the BasicQuery or the more feature rich Query.
    
    Specified by:
    
    findOne in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query class that specifies the criteria used to find a record and also an optional fields specification.
    
    entityClass - the parametrized type of the returned Mono.
    
    Returns:
    
    the converted object.
  - findOne
```
public <T> reactor.core.publisher.Mono<T> findOne(Query query,
                                                  Class<T> entityClass,
                                                  String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Map the results of an ad-hoc query on the specified collection to a single instance of an object of the specified type.
    The object is converted from the MongoDB native representation using an instance of MongoConverter. Unless configured otherwise, an instance of MappingMongoConverter will be used.
    The query is specified as a Query which can be created either using the BasicQuery or the more feature rich Query.
    
    Specified by:
    
    findOne in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query class that specifies the criteria used to find a record and also an optional fields specification.
    
    entityClass - the parametrized type of the returned Mono.
    
    collectionName - name of the collection to retrieve the objects from.
    
    Returns:
    
    the converted object.
  - exists
```
public reactor.core.publisher.Mono<Boolean> exists(Query query,
                                                   Class<?> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Determine result of given Query contains at least one element.
    
    Specified by:
    
    exists in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the Query class that specifies the criteria used to find a record.
    
    entityClass - the parametrized type.
    
    Returns:
    
    true if the query yields a result.
  - exists
```
public reactor.core.publisher.Mono<Boolean> exists(Query query,
                                                   String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Determine result of given Query contains at least one element.
    NOTE: Any additional support for query/field mapping, etc. is not available due to the lack of domain type information. Use ReactiveMongoOperations.exists(Query, Class, String) to get full type specific support.
    
    Specified by:
    
    exists in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the Query class that specifies the criteria used to find a record.
    
    collectionName - name of the collection to check for objects.
    
    Returns:
    
    true if the query yields a result.
  - exists
```
public reactor.core.publisher.Mono<Boolean> exists(Query query,
                                                   @Nullable
                                                   Class<?> entityClass,
                                                   String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Determine result of given Query contains at least one element.
    
    Specified by:
    
    exists in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the Query class that specifies the criteria used to find a record.
    
    entityClass - the parametrized type. Can be null.
    
    collectionName - name of the collection to check for objects.
    
    Returns:
    
    true if the query yields a result.
  - find
```
public <T> reactor.core.publisher.Flux<T> find(Query query,
                                               Class<T> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Map the results of an ad-hoc query on the collection for the entity class to a Flux of the specified type.
    The object is converted from the MongoDB native representation using an instance of MongoConverter. Unless configured otherwise, an instance of MappingMongoConverter will be used.
    The query is specified as a Query which can be created either using the BasicQuery or the more feature rich Query.
    
    Specified by:
    
    find in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query class that specifies the criteria used to find a record and also an optional fields specification. Must not be null.
    
    entityClass - the parametrized type of the returned Flux. Must not be null.
    
    Returns:
    
    the Flux of converted objects.
  - find
```
public <T> reactor.core.publisher.Flux<T> find(@Nullable
                                               Query query,
                                               Class<T> entityClass,
                                               String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Map the results of an ad-hoc query on the specified collection to a Flux of the specified type.
    The object is converted from the MongoDB native representation using an instance of MongoConverter. Unless configured otherwise, an instance of MappingMongoConverter will be used.
    The query is specified as a Query which can be created either using the BasicQuery or the more feature rich Query.
    
    Specified by:
    
    find in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query class that specifies the criteria used to find a record and also an optional fields specification. Must not be null.
    
    entityClass - the parametrized type of the returned Flux.
    
    collectionName - name of the collection to retrieve the objects from. Must not be null.
    
    Returns:
    
    the Flux of converted objects.
  - findById
```
public <T> reactor.core.publisher.Mono<T> findById(Object id,
                                                   Class<T> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Returns a document with the given id mapped onto the given class. The collection the query is ran against will be derived from the given target class as well.
    
    Specified by:
    
    findById in interface ReactiveMongoOperations
    
    Parameters:
    
    id - the id of the document to return. Must not be null.
    
    entityClass - the type the document shall be converted into. Must not be null.
    
    Returns:
    
    the document with the given id mapped onto the given target class.
  - findById
```
public <T> reactor.core.publisher.Mono<T> findById(Object id,
                                                   Class<T> entityClass,
                                                   String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Returns the document with the given id from the given collection mapped onto the given target class.
    
    Specified by:
    
    findById in interface ReactiveMongoOperations
    
    Parameters:
    
    id - the id of the document to return.
    
    entityClass - the type to convert the document to.
    
    collectionName - the collection to query for the document.
    
    Returns:
    
    the converted object.
  - findDistinct
```
public <T> reactor.core.publisher.Flux<T> findDistinct(Query query,
                                                       String field,
                                                       Class<?> entityClass,
                                                       Class<T> resultClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Finds the distinct values for a specified field across a single MongoCollection or view and returns the results in a Flux.
    
    Specified by:
    
    findDistinct in interface ReactiveMongoOperations
    
    Parameters:
    
    query - filter Query to restrict search. Must not be null.
    
    field - the name of the field to inspect for distinct values. Must not be null.
    
    entityClass - the domain type used for determining the actual MongoCollection and mapping the Query to the domain type fields. Must not be null.
    
    resultClass - the result type. Must not be null.
    
    Returns:
    
    never null.
  - findDistinct
```
public <T> reactor.core.publisher.Flux<T> findDistinct(Query query,
                                                       String field,
                                                       String collectionName,
                                                       Class<?> entityClass,
                                                       Class<T> resultClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Finds the distinct values for a specified field across a single MongoCollection or view and returns the results in a Flux.
    
    Specified by:
    
    findDistinct in interface ReactiveMongoOperations
    
    Parameters:
    
    query - filter Query to restrict search. Must not be null.
    
    field - the name of the field to inspect for distinct values. Must not be null.
    
    collectionName - the explicit name of the actual MongoCollection. Must not be null.
    
    entityClass - the domain type used for mapping the Query to the domain type fields.
    
    resultClass - the result type. Must not be null.
    
    Returns:
    
    never null.
  - aggregate
```
public <O> reactor.core.publisher.Flux<O> aggregate(TypedAggregation<?> aggregation,
                                                    String inputCollectionName,
                                                    Class<O> outputType)
```
    Description copied from interface: ReactiveMongoOperations
    
    Execute an aggregation operation.
    The raw results will be mapped to the given entity class.
    Aggregation streaming cannot be used with aggregation explain nor with AggregationOptions.getCursorBatchSize(). Enabling explanation mode or setting batch size cause IllegalArgumentException.
    
    Specified by:
    
    aggregate in interface ReactiveMongoOperations
    
    Parameters:
    
    aggregation - The TypedAggregation specification holding the aggregation operations. Must not be null.
    
    inputCollectionName - The name of the input collection to use for the aggregation. Must not be null.
    
    outputType - The parametrized type of the returned Flux. Must not be null.
    
    Returns:
    
    The results of the aggregation operation.
  - aggregate
```
public <O> reactor.core.publisher.Flux<O> aggregate(TypedAggregation<?> aggregation,
                                                    Class<O> outputType)
```
    Description copied from interface: ReactiveMongoOperations
    
    Execute an aggregation operation.
    The raw results will be mapped to the given entity class and are returned as stream. The name of the inputCollection is derived from the aggregation input type.
    Aggregation streaming cannot be used with aggregation explain nor with AggregationOptions.getCursorBatchSize(). Enabling explanation mode or setting batch size cause IllegalArgumentException.
    
    Specified by:
    
    aggregate in interface ReactiveMongoOperations
    
    Parameters:
    
    aggregation - The TypedAggregation specification holding the aggregation operations. Must not be null.
    
    outputType - The parametrized type of the returned Flux. Must not be null.
    
    Returns:
    
    The results of the aggregation operation.
  - aggregate
```
public <O> reactor.core.publisher.Flux<O> aggregate(Aggregation aggregation,
                                                    Class<?> inputType,
                                                    Class<O> outputType)
```
    Description copied from interface: ReactiveMongoOperations
    
    Execute an aggregation operation.
    The raw results will be mapped to the given ouputType. The name of the inputCollection is derived from the inputType.
    Aggregation streaming cannot be used with aggregation explain nor with AggregationOptions.getCursorBatchSize(). Enabling explanation mode or setting batch size cause IllegalArgumentException.
    
    Specified by:
    
    aggregate in interface ReactiveMongoOperations
    
    Parameters:
    
    aggregation - The Aggregation specification holding the aggregation operations. Must not be null.
    
    inputType - the inputType where the aggregation operation will read from. Must not be null.
    
    outputType - The parametrized type of the returned Flux. Must not be null.
    
    Returns:
    
    The results of the aggregation operation.
  - aggregate
```
public <O> reactor.core.publisher.Flux<O> aggregate(Aggregation aggregation,
                                                    String collectionName,
                                                    Class<O> outputType)
```
    Description copied from interface: ReactiveMongoOperations
    
    Execute an aggregation operation.
    The raw results will be mapped to the given entity class.
    Aggregation streaming cannot be used with aggregation explain nor with AggregationOptions.getCursorBatchSize(). Enabling explanation mode or setting batch size cause IllegalArgumentException.
    
    Specified by:
    
    aggregate in interface ReactiveMongoOperations
    
    Parameters:
    
    aggregation - The Aggregation specification holding the aggregation operations. Must not be null.
    
    collectionName - the collection where the aggregation operation will read from. Must not be null or empty.
    
    outputType - The parametrized type of the returned Flux. Must not be null.
    
    Returns:
    
    The results of the aggregation operation.
  - aggregate
```
protected <O> reactor.core.publisher.Flux<O> aggregate(Aggregation aggregation,
                                                       String collectionName,
                                                       Class<O> outputType,
                                                       @Nullable
                                                       AggregationOperationContext context)
```
    Parameters:
    
    aggregation - must not be null.
    
    collectionName - must not be null.
    
    outputType - must not be null.
    
    context - can be null and will be defaulted to Aggregation.DEFAULT_CONTEXT.
    
    Returns:
    
    never null.
  - geoNear
```
public <T> reactor.core.publisher.Flux<GeoResult<T>> geoNear(NearQuery near,
                                                             Class<T> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Returns Flux of GeoResult for all entities matching the given NearQuery. Will consider entity mapping information to determine the collection the query is ran against. Note, that MongoDB limits the number of results by default. Make sure to add an explicit limit to the NearQuery if you expect a particular number of results.
    
    Specified by:
    
    geoNear in interface ReactiveMongoOperations
    
    Parameters:
    
    near - must not be null.
    
    entityClass - must not be null.
    
    Returns:
    
    the converted GeoResults.
  - geoNear
```
public <T> reactor.core.publisher.Flux<GeoResult<T>> geoNear(NearQuery near,
                                                             Class<T> entityClass,
                                                             String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Returns Flux of GeoResult for all entities matching the given NearQuery. Note, that MongoDB limits the number of results by default. Make sure to add an explicit limit to the NearQuery if you expect a particular number of results.
    
    Specified by:
    
    geoNear in interface ReactiveMongoOperations
    
    Parameters:
    
    near - must not be null.
    
    entityClass - must not be null.
    
    collectionName - the collection to trigger the query against. If no collection name is given the entity class will be inspected.
    
    Returns:
    
    the converted GeoResults.
  - geoNear
```
protected <T> reactor.core.publisher.Flux<GeoResult<T>> geoNear(NearQuery near,
                                                                Class<?> entityClass,
                                                                String collectionName,
                                                                Class<T> returnType)
```
  - findAndModify
```
public <T> reactor.core.publisher.Mono<T> findAndModify(Query query,
                                                        Update update,
                                                        Class<T> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Triggers findAndModify to apply provided Update on documents matching Criteria of given Query.
    
    Specified by:
    
    findAndModify in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the Query class that specifies the Criteria used to find a record and also an optional fields specification. Must not be null.
    
    update - the Update to apply on matching documents. Must not be null.
    
    entityClass - the parametrized type. Must not be null.
    
    Returns:
    
    the converted object that was updated before it was updated.
  - findAndModify
```
public <T> reactor.core.publisher.Mono<T> findAndModify(Query query,
                                                        Update update,
                                                        Class<T> entityClass,
                                                        String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Triggers findAndModify to apply provided Update on documents matching Criteria of given Query.
    
    Specified by:
    
    findAndModify in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the Query class that specifies the Criteria used to find a record and also an optional fields specification. Must not be null.
    
    update - the Update to apply on matching documents. Must not be null.
    
    entityClass - the parametrized type. Must not be null.
    
    collectionName - the collection to query. Must not be null.
    
    Returns:
    
    the converted object that was updated before it was updated.
  - findAndModify
```
public <T> reactor.core.publisher.Mono<T> findAndModify(Query query,
                                                        Update update,
                                                        FindAndModifyOptions options,
                                                        Class<T> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Triggers findAndModify to apply provided Update on documents matching Criteria of given Query taking FindAndModifyOptions into account.
    
    Specified by:
    
    findAndModify in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the Query class that specifies the Criteria used to find a record and also an optional fields specification.
    
    update - the Update to apply on matching documents.
    
    options - the FindAndModifyOptions holding additional information.
    
    entityClass - the parametrized type.
    
    Returns:
    
    the converted object that was updated. Depending on the value of FindAndModifyOptions.isReturnNew() this will either be the object as it was before the update or as it is after the update.
  - findAndModify
```
public <T> reactor.core.publisher.Mono<T> findAndModify(Query query,
                                                        Update update,
                                                        FindAndModifyOptions options,
                                                        Class<T> entityClass,
                                                        String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Triggers findAndModify to apply provided Update on documents matching Criteria of given Query taking FindAndModifyOptions into account.
    
    Specified by:
    
    findAndModify in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the Query class that specifies the Criteria used to find a record and also an optional fields specification. Must not be null.
    
    update - the Update to apply on matching documents. Must not be null.
    
    options - the FindAndModifyOptions holding additional information. Must not be null.
    
    entityClass - the parametrized type. Must not be null.
    
    collectionName - the collection to query. Must not be null.
    
    Returns:
    
    the converted object that was updated. Depending on the value of FindAndModifyOptions.isReturnNew() this will either be the object as it was before the update or as it is after the update.
  - findAndReplace
```
public <S,T> reactor.core.publisher.Mono<T> findAndReplace(Query query,
                                                           S replacement,
                                                           FindAndReplaceOptions options,
                                                           Class<S> entityType,
                                                           String collectionName,
                                                           Class<T> resultType)
```
    Description copied from interface: ReactiveMongoOperations
    
    Triggers findOneAndReplace to replace a single document matching Criteria of given Query with the replacement document taking FindAndReplaceOptions into account.
    NOTE: The replacement entity must not hold an id.
    
    Specified by:
    
    findAndReplace in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the Query class that specifies the Criteria used to find a record and also an optional fields specification. Must not be null.
    
    replacement - the replacement document. Must not be null.
    
    options - the FindAndModifyOptions holding additional information. Must not be null.
    
    entityType - the type used for mapping the Query to domain type fields and deriving the collection from. Must not be null.
    
    collectionName - the collection to query. Must not be null.
    
    resultType - resultType the parametrized type projection return type. Must not be null, use the domain type of Object.class instead.
    
    Returns:
    
    the converted object that was updated or Mono.empty(), if not found. Depending on the value of FindAndReplaceOptions.isReturnNew() this will either be the object as it was before the update or as it is after the update.
  - findAndRemove
```
public <T> reactor.core.publisher.Mono<T> findAndRemove(Query query,
                                                        Class<T> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Map the results of an ad-hoc query on the collection for the entity type to a single instance of an object of the specified type. The first document that matches the query is returned and also removed from the collection in the database.
    The object is converted from the MongoDB native representation using an instance of MongoConverter.
    The query is specified as a Query which can be created either using the BasicQuery or the more feature rich Query.
    
    Specified by:
    
    findAndRemove in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query class that specifies the criteria used to find a record and also an optional fields specification.
    
    entityClass - the parametrized type of the returned Mono.
    
    Returns:
    
    the converted object
  - findAndRemove
```
public <T> reactor.core.publisher.Mono<T> findAndRemove(Query query,
                                                        Class<T> entityClass,
                                                        String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Map the results of an ad-hoc query on the specified collection to a single instance of an object of the specified type. The first document that matches the query is returned and also removed from the collection in the database.
    The object is converted from the MongoDB native representation using an instance of MongoConverter. Unless configured otherwise, an instance of MappingMongoConverter will be used.
    The query is specified as a Query which can be created either using the BasicQuery or the more feature rich Query.
    
    Specified by:
    
    findAndRemove in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query class that specifies the criteria used to find a record and also an optional fields specification.
    
    entityClass - the parametrized type of the returned Mono.
    
    collectionName - name of the collection to retrieve the objects from.
    
    Returns:
    
    the converted object.
  - count
```
public reactor.core.publisher.Mono<Long> count(Query query,
                                               Class<?> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Returns the number of documents for the given Query by querying the collection of the given entity class.
    
    Specified by:
    
    count in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the Query class that specifies the criteria used to find documents. Must not be null.
    
    entityClass - class that determines the collection to use. Must not be null.
    
    Returns:
    
    the count of matching documents.
  - count
```
public reactor.core.publisher.Mono<Long> count(Query query,
                                               String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Returns the number of documents for the given Query querying the given collection. The given Query must solely consist of document field references as we lack type information to map potential property references onto document fields. Use ReactiveMongoOperations.count(Query, Class, String) to get full type specific support.
    
    Specified by:
    
    count in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the Query class that specifies the criteria used to find documents.
    
    collectionName - must not be null or empty.
    
    Returns:
    
    the count of matching documents.
    
    See Also:
    
    ReactiveMongoOperations.count(Query, Class, String)
  - count
```
public reactor.core.publisher.Mono<Long> count(Query query,
                                               @Nullable
                                               Class<?> entityClass,
                                               String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Returns the number of documents for the given Query by querying the given collection using the given entity class to map the given Query.
    
    Specified by:
    
    count in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the Query class that specifies the criteria used to find documents. Must not be null.
    
    entityClass - the parametrized type. Can be null.
    
    collectionName - must not be null or empty.
    
    Returns:
    
    the count of matching documents.
  - insert
```
public <T> reactor.core.publisher.Mono<T> insert(reactor.core.publisher.Mono<? extends T> objectToSave)
```
    Description copied from interface: ReactiveMongoOperations
    
    Insert the object into the collection for the entity type of the object to save.
    The object is converted to the MongoDB native representation using an instance of MongoConverter.
    If you object has an "Id' property, it will be set with the generated Id from MongoDB. If your Id property is a String then MongoDB ObjectId will be used to populate that string. Otherwise, the conversion from ObjectId to your property type will be handled by Spring's BeanWrapper class that leverages Type Conversion API. See Spring's Type Conversion" for more details.
    
    Insert is used to initially store the object into the database. To update an existing object use the save method.
    
    Specified by:
    
    insert in interface ReactiveMongoOperations
    
    Parameters:
    
    objectToSave - the object to store in the collection. Must not be null.
    
    Returns:
    
    the inserted objects.
  - insertAll
```
public <T> reactor.core.publisher.Flux<T> insertAll(reactor.core.publisher.Mono<? extends Collection<? extends T>> batchToSave,
                                                    Class<?> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Insert a Collection of objects into a collection in a single batch write to the database.
    
    Specified by:
    
    insertAll in interface ReactiveMongoOperations
    
    Parameters:
    
    batchToSave - the publisher which provides objects to save. Must not be null.
    
    entityClass - class that determines the collection to use. Must not be null.
    
    Returns:
    
    the inserted objects.
  - insertAll
```
public <T> reactor.core.publisher.Flux<T> insertAll(reactor.core.publisher.Mono<? extends Collection<? extends T>> batchToSave,
                                                    String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Insert objects into the specified collection in a single batch write to the database.
    
    Specified by:
    
    insertAll in interface ReactiveMongoOperations
    
    Parameters:
    
    batchToSave - the publisher which provides objects to save. Must not be null.
    
    collectionName - name of the collection to store the object in. Must not be null.
    
    Returns:
    
    the inserted objects.
  - insert
```
public <T> reactor.core.publisher.Mono<T> insert(T objectToSave)
```
    Description copied from interface: ReactiveMongoOperations
    
    Insert the object into the collection for the entity type of the object to save.
    The object is converted to the MongoDB native representation using an instance of MongoConverter.
    If you object has an "Id' property, it will be set with the generated Id from MongoDB. If your Id property is a String then MongoDB ObjectId will be used to populate that string. Otherwise, the conversion from ObjectId to your property type will be handled by Spring's BeanWrapper class that leverages Type Conversion API. See Spring's Type Conversion" for more details.
    
    Insert is used to initially store the object into the database. To update an existing object use the save method.
    
    Specified by:
    
    insert in interface ReactiveMongoOperations
    
    Parameters:
    
    objectToSave - the object to store in the collection. Must not be null.
    
    Returns:
    
    the inserted object.
  - insert
```
public <T> reactor.core.publisher.Mono<T> insert(T objectToSave,
                                                 String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Insert the object into the specified collection.
    The object is converted to the MongoDB native representation using an instance of MongoConverter. Unless configured otherwise, an instance of MappingMongoConverter will be used.
    Insert is used to initially store the object into the database. To update an existing object use the save method.
    
    Specified by:
    
    insert in interface ReactiveMongoOperations
    
    Parameters:
    
    objectToSave - the object to store in the collection. Must not be null.
    
    collectionName - name of the collection to store the object in. Must not be null.
    
    Returns:
    
    the inserted object.
  - doInsert
```
protected <T> reactor.core.publisher.Mono<T> doInsert(String collectionName,
                                                      T objectToSave,
                                                      MongoWriter<Object> writer)
```
  - insert
```
public <T> reactor.core.publisher.Flux<T> insert(Collection<? extends T> batchToSave,
                                                 Class<?> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Insert a Collection of objects into a collection in a single batch write to the database.
    
    Specified by:
    
    insert in interface ReactiveMongoOperations
    
    Parameters:
    
    batchToSave - the batch of objects to save. Must not be null.
    
    entityClass - class that determines the collection to use. Must not be null.
    
    Returns:
    
    the inserted objects .
  - insert
```
public <T> reactor.core.publisher.Flux<T> insert(Collection<? extends T> batchToSave,
                                                 String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Insert a batch of objects into the specified collection in a single batch write to the database.
    
    Specified by:
    
    insert in interface ReactiveMongoOperations
    
    Parameters:
    
    batchToSave - the list of objects to save. Must not be null.
    
    collectionName - name of the collection to store the object in. Must not be null.
    
    Returns:
    
    the inserted objects.
  - insertAll
```
public <T> reactor.core.publisher.Flux<T> insertAll(Collection<? extends T> objectsToSave)
```
    Description copied from interface: ReactiveMongoOperations
    
    Insert a mixed Collection of objects into a database collection determining the collection name to use based on the class.
    
    Specified by:
    
    insertAll in interface ReactiveMongoOperations
    
    Parameters:
    
    objectsToSave - the list of objects to save. Must not be null.
    
    Returns:
    
    the saved objects.
  - insertAll
```
public <T> reactor.core.publisher.Flux<T> insertAll(reactor.core.publisher.Mono<? extends Collection<? extends T>> objectsToSave)
```
    Description copied from interface: ReactiveMongoOperations
    
    Insert a mixed Collection of objects into a database collection determining the collection name to use based on the class.
    
    Specified by:
    
    insertAll in interface ReactiveMongoOperations
    
    Parameters:
    
    objectsToSave - the publisher which provides objects to save. Must not be null.
    
    Returns:
    
    the inserted objects.
  - doInsertAll
```
protected <T> reactor.core.publisher.Flux<T> doInsertAll(Collection<? extends T> listToSave,
                                                         MongoWriter<Object> writer)
```
  - doInsertBatch
```
protected <T> reactor.core.publisher.Flux<T> doInsertBatch(String collectionName,
                                                           Collection<? extends T> batchToSave,
                                                           MongoWriter<Object> writer)
```
  - save
```
public <T> reactor.core.publisher.Mono<T> save(reactor.core.publisher.Mono<? extends T> objectToSave)
```
    Description copied from interface: ReactiveMongoOperations
    
    Save the object to the collection for the entity type of the object to save. This will perform an insert if the object is not already present, that is an 'upsert'.
    The object is converted to the MongoDB native representation using an instance of MongoConverter. Unless configured otherwise, an instance of MappingMongoConverter will be used.
    If you object has an "Id' property, it will be set with the generated Id from MongoDB. If your Id property is a String then MongoDB ObjectId will be used to populate that string. Otherwise, the conversion from ObjectId to your property type will be handled by Spring's BeanWrapper class that leverages Type Conversion API. See Spring's Type Conversion" for more details.
    
    Specified by:
    
    save in interface ReactiveMongoOperations
    
    Parameters:
    
    objectToSave - the object to store in the collection. Must not be null.
    
    Returns:
    
    the saved object.
  - save
```
public <T> reactor.core.publisher.Mono<T> save(reactor.core.publisher.Mono<? extends T> objectToSave,
                                               String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Save the object to the specified collection. This will perform an insert if the object is not already present, that is an 'upsert'.
    The object is converted to the MongoDB native representation using an instance of MongoConverter. Unless configured otherwise, an instance of MappingMongoConverter will be used.
    If you object has an "Id' property, it will be set with the generated Id from MongoDB. If your Id property is a String then MongoDB ObjectId will be used to populate that string. Otherwise, the conversion from ObjectId to your property type will be handled by Spring's BeanWrapper class that leverages Type Conversion API. See Spring's Type Conversion" for more details.
    
    Specified by:
    
    save in interface ReactiveMongoOperations
    
    Parameters:
    
    objectToSave - the object to store in the collection. Must not be null.
    
    collectionName - name of the collection to store the object in. Must not be null.
    
    Returns:
    
    the saved object.
  - save
```
public <T> reactor.core.publisher.Mono<T> save(T objectToSave)
```
    Description copied from interface: ReactiveMongoOperations
    
    Save the object to the collection for the entity type of the object to save. This will perform an insert if the object is not already present, that is an 'upsert'.
    The object is converted to the MongoDB native representation using an instance of MongoConverter. Unless configured otherwise, an instance of MappingMongoConverter will be used.
    If you object has an "Id' property, it will be set with the generated Id from MongoDB. If your Id property is a String then MongoDB ObjectId will be used to populate that string. Otherwise, the conversion from ObjectId to your property type will be handled by Spring's BeanWrapper class that leverages Type Conversion API. See Spring's Type Conversion" for more details.
    
    Specified by:
    
    save in interface ReactiveMongoOperations
    
    Parameters:
    
    objectToSave - the object to store in the collection. Must not be null.
    
    Returns:
    
    the saved object.
  - save
```
public <T> reactor.core.publisher.Mono<T> save(T objectToSave,
                                               String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Save the object to the specified collection. This will perform an insert if the object is not already present, that is an 'upsert'.
    The object is converted to the MongoDB native representation using an instance of MongoConverter. Unless configured otherwise, an instance of MappingMongoConverter will be used.
    If you object has an "Id' property, it will be set with the generated Id from MongoDB. If your Id property is a String then MongoDB ObjectId will be used to populate that string. Otherwise, the conversion from ObjectId to your property type will be handled by Spring's BeanWrapper class that leverages Type Conversion API. See Spring's Type Conversion" for more details.
    
    Specified by:
    
    save in interface ReactiveMongoOperations
    
    Parameters:
    
    objectToSave - the object to store in the collection. Must not be null.
    
    collectionName - name of the collection to store the object in. Must not be null.
    
    Returns:
    
    the saved object.
  - doSave
```
protected <T> reactor.core.publisher.Mono<T> doSave(String collectionName,
                                                    T objectToSave,
                                                    MongoWriter<Object> writer)
```
  - insertDocument
```
protected reactor.core.publisher.Mono<Object> insertDocument(String collectionName,
                                                             org.bson.Document dbDoc,
                                                             Class<?> entityClass)
```
  - insertDocumentList
```
protected reactor.core.publisher.Flux<org.bson.types.ObjectId> insertDocumentList(String collectionName,
                                                                                  List<org.bson.Document> dbDocList)
```
  - saveDocument
```
protected reactor.core.publisher.Mono<Object> saveDocument(String collectionName,
                                                           org.bson.Document document,
                                                           Class<?> entityClass)
```
  - upsert
```
public reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult> upsert(Query query,
                                                                                  Update update,
                                                                                  Class<?> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Performs an upsert. If no document is found that matches the query, a new document is created and inserted by combining the query document and the update document.
    
    Specified by:
    
    upsert in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query document that specifies the criteria used to select a record to be upserted. Must not be null.
    
    update - the update document that contains the updated object or $ operators to manipulate the existing object. Must not be null.
    
    entityClass - class that determines the collection to use. Must not be null.
    
    Returns:
    
    the UpdateResult which lets you access the results of the previous write.
  - upsert
```
public reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult> upsert(Query query,
                                                                                  Update update,
                                                                                  String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Performs an upsert. If no document is found that matches the query, a new document is created and inserted by combining the query document and the update document.
    NOTE: Any additional support for field mapping, versions, etc. is not available due to the lack of domain type information. Use ReactiveMongoOperations.upsert(Query, Update, Class, String) to get full type specific support.
    
    Specified by:
    
    upsert in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query document that specifies the criteria used to select a record to be upserted. Must not be null.
    
    update - the update document that contains the updated object or $ operators to manipulate the existing object. Must not be null.
    
    collectionName - name of the collection to update the object in.
    
    Returns:
    
    the UpdateResult which lets you access the results of the previous write.
  - upsert
```
public reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult> upsert(Query query,
                                                                                  Update update,
                                                                                  Class<?> entityClass,
                                                                                  String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Performs an upsert. If no document is found that matches the query, a new document is created and inserted by combining the query document and the update document.
    
    Specified by:
    
    upsert in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query document that specifies the criteria used to select a record to be upserted. Must not be null.
    
    update - the update document that contains the updated object or $ operators to manipulate the existing object. Must not be null.
    
    entityClass - class of the pojo to be operated on. Must not be null.
    
    collectionName - name of the collection to update the object in. Must not be null.
    
    Returns:
    
    the UpdateResult which lets you access the results of the previous write.
  - updateFirst
```
public reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult> updateFirst(Query query,
                                                                                       Update update,
                                                                                       Class<?> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Updates the first object that is found in the collection of the entity class that matches the query document with the provided update document.
    
    Specified by:
    
    updateFirst in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query document that specifies the criteria used to select a record to be updated. Must not be null.
    
    update - the update document that contains the updated object or $ operators to manipulate the existing. Must not be null.
    
    entityClass - class that determines the collection to use.
    
    Returns:
    
    the UpdateResult which lets you access the results of the previous write.
  - updateFirst
```
public reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult> updateFirst(Query query,
                                                                                       Update update,
                                                                                       String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Updates the first object that is found in the specified collection that matches the query document criteria with the provided updated document.
    NOTE: Any additional support for field mapping, versions, etc. is not available due to the lack of domain type information. Use ReactiveMongoOperations.updateFirst(Query, Update, Class, String) to get full type specific support.
    
    Specified by:
    
    updateFirst in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query document that specifies the criteria used to select a record to be updated. Must not be null.
    
    update - the update document that contains the updated object or $ operators to manipulate the existing. Must not be null.
    
    collectionName - name of the collection to update the object in. Must not be null.
    
    Returns:
    
    the UpdateResult which lets you access the results of the previous write.
  - updateFirst
```
public reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult> updateFirst(Query query,
                                                                                       Update update,
                                                                                       Class<?> entityClass,
                                                                                       String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Updates the first object that is found in the specified collection that matches the query document criteria with the provided updated document.
    
    Specified by:
    
    updateFirst in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query document that specifies the criteria used to select a record to be updated. Must not be null.
    
    update - the update document that contains the updated object or $ operators to manipulate the existing. Must not be null.
    
    entityClass - class of the pojo to be operated on. Must not be null.
    
    collectionName - name of the collection to update the object in. Must not be null.
    
    Returns:
    
    the UpdateResult which lets you access the results of the previous write.
  - updateMulti
```
public reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult> updateMulti(Query query,
                                                                                       Update update,
                                                                                       Class<?> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Updates all objects that are found in the collection for the entity class that matches the query document criteria with the provided updated document.
    
    Specified by:
    
    updateMulti in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query document that specifies the criteria used to select a record to be updated. Must not be null.
    
    update - the update document that contains the updated object or $ operators to manipulate the existing. Must not be null.
    
    entityClass - class of the pojo to be operated on. Must not be null.
    
    Returns:
    
    the UpdateResult which lets you access the results of the previous write.
  - updateMulti
```
public reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult> updateMulti(Query query,
                                                                                       Update update,
                                                                                       String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Updates all objects that are found in the specified collection that matches the query document criteria with the provided updated document.
    NOTE: Any additional support for field mapping, versions, etc. is not available due to the lack of domain type information. Use ReactiveMongoOperations.updateMulti(Query, Update, Class, String) to get full type specific support.
    
    Specified by:
    
    updateMulti in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query document that specifies the criteria used to select a record to be updated. Must not be null.
    
    update - the update document that contains the updated object or $ operators to manipulate the existing. Must not be null.
    
    collectionName - name of the collection to update the object in. Must not be null.
    
    Returns:
    
    the UpdateResult which lets you access the results of the previous write.
  - updateMulti
```
public reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult> updateMulti(Query query,
                                                                                       Update update,
                                                                                       Class<?> entityClass,
                                                                                       String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Updates all objects that are found in the collection for the entity class that matches the query document criteria with the provided updated document.
    
    Specified by:
    
    updateMulti in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query document that specifies the criteria used to select a record to be updated. Must not be null.
    
    update - the update document that contains the updated object or $ operators to manipulate the existing. Must not be null.
    
    entityClass - class of the pojo to be operated on. Must not be null.
    
    collectionName - name of the collection to update the object in. Must not be null.
    
    Returns:
    
    the UpdateResult which lets you access the results of the previous write.
  - doUpdate
```
protected reactor.core.publisher.Mono<com.mongodb.client.result.UpdateResult> doUpdate(String collectionName,
                                                                                       Query query,
                                                                                       @Nullable
                                                                                       Update update,
                                                                                       @Nullable
                                                                                       Class<?> entityClass,
                                                                                       boolean upsert,
                                                                                       boolean multi)
```
  - remove
```
public reactor.core.publisher.Mono<com.mongodb.client.result.DeleteResult> remove(reactor.core.publisher.Mono<? extends Object> objectToRemove)
```
    Description copied from interface: ReactiveMongoOperations
    
    Remove the given object from the collection by id.
    
    Specified by:
    
    remove in interface ReactiveMongoOperations
    
    Parameters:
    
    objectToRemove - must not be null.
    
    Returns:
    
    the DeleteResult which lets you access the results of the previous delete.
  - remove
```
public reactor.core.publisher.Mono<com.mongodb.client.result.DeleteResult> remove(reactor.core.publisher.Mono<? extends Object> objectToRemove,
                                                                                  String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Removes the given object from the given collection.
    
    Specified by:
    
    remove in interface ReactiveMongoOperations
    
    Parameters:
    
    objectToRemove - must not be null.
    
    collectionName - name of the collection where the objects will removed, must not be null or empty.
    
    Returns:
    
    the DeleteResult which lets you access the results of the previous delete.
  - remove
```
public reactor.core.publisher.Mono<com.mongodb.client.result.DeleteResult> remove(Object object)
```
    Description copied from interface: ReactiveMongoOperations
    
    Remove the given object from the collection by id.
    
    Specified by:
    
    remove in interface ReactiveMongoOperations
    
    Parameters:
    
    object - must not be null.
    
    Returns:
    
    the DeleteResult which lets you access the results of the previous delete.
  - remove
```
public reactor.core.publisher.Mono<com.mongodb.client.result.DeleteResult> remove(Object object,
                                                                                  String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Removes the given object from the given collection.
    
    Specified by:
    
    remove in interface ReactiveMongoOperations
    
    Parameters:
    
    object - must not be null.
    
    collectionName - name of the collection where the objects will removed, must not be null or empty.
    
    Returns:
    
    the DeleteResult which lets you access the results of the previous delete.
  - remove
```
public reactor.core.publisher.Mono<com.mongodb.client.result.DeleteResult> remove(Query query,
                                                                                  String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Remove all documents from the specified collection that match the provided query document criteria. There is no conversion/mapping done for any criteria using the id field.
    NOTE: Any additional support for field mapping is not available due to the lack of domain type information. Use ReactiveMongoOperations.remove(Query, Class, String) to get full type specific support.
    
    Specified by:
    
    remove in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query document that specifies the criteria used to remove a record.
    
    collectionName - name of the collection where the objects will removed, must not be null or empty.
    
    Returns:
    
    the DeleteResult which lets you access the results of the previous delete.
  - remove
```
public reactor.core.publisher.Mono<com.mongodb.client.result.DeleteResult> remove(Query query,
                                                                                  Class<?> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Remove all documents that match the provided query document criteria from the the collection used to store the entityClass. The Class parameter is also used to help convert the Id of the object if it is present in the query.
    
    Specified by:
    
    remove in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query document that specifies the criteria used to remove a record.
    
    entityClass - class that determines the collection to use.
    
    Returns:
    
    the DeleteResult which lets you access the results of the previous delete.
  - remove
```
public reactor.core.publisher.Mono<com.mongodb.client.result.DeleteResult> remove(Query query,
                                                                                  @Nullable
                                                                                  Class<?> entityClass,
                                                                                  String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Remove all documents that match the provided query document criteria from the the collection used to store the entityClass. The Class parameter is also used to help convert the Id of the object if it is present in the query.
    
    Specified by:
    
    remove in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query document that specifies the criteria used to remove a record.
    
    entityClass - class of the pojo to be operated on. Can be null.
    
    collectionName - name of the collection where the objects will removed, must not be null or empty.
    
    Returns:
    
    the DeleteResult which lets you access the results of the previous delete.
  - doRemove
```
protected <T> reactor.core.publisher.Mono<com.mongodb.client.result.DeleteResult> doRemove(String collectionName,
                                                                                           Query query,
                                                                                           @Nullable
                                                                                           Class<T> entityClass)
```
  - findAll
```
public <T> reactor.core.publisher.Flux<T> findAll(Class<T> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Query for a Flux of objects of type T from the collection used by the entity class.
    The object is converted from the MongoDB native representation using an instance of MongoConverter. Unless configured otherwise, an instance of MappingMongoConverter will be used.
    If your collection does not contain a homogeneous collection of types, this operation will not be an efficient way to map objects since the test for class type is done in the client and not on the server.
    
    Specified by:
    
    findAll in interface ReactiveMongoOperations
    
    Parameters:
    
    entityClass - the parametrized type of the returned Flux.
    
    Returns:
    
    the converted collection.
  - findAll
```
public <T> reactor.core.publisher.Flux<T> findAll(Class<T> entityClass,
                                                  String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Query for a Flux of objects of type T from the specified collection.
    The object is converted from the MongoDB native representation using an instance of MongoConverter. Unless configured otherwise, an instance of MappingMongoConverter will be used.
    If your collection does not contain a homogeneous collection of types, this operation will not be an efficient way to map objects since the test for class type is done in the client and not on the server.
    
    Specified by:
    
    findAll in interface ReactiveMongoOperations
    
    Parameters:
    
    entityClass - the parametrized type of the returned Flux.
    
    collectionName - name of the collection to retrieve the objects from.
    
    Returns:
    
    the converted collection.
  - findAllAndRemove
```
public <T> reactor.core.publisher.Flux<T> findAllAndRemove(Query query,
                                                           String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Returns and removes all documents form the specified collection that match the provided query.
    NOTE: Any additional support for field mapping is not available due to the lack of domain type information. Use ReactiveMongoOperations.findAllAndRemove(Query, Class, String) to get full type specific support.
    
    Specified by:
    
    findAllAndRemove in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query document that specifies the criteria used to find and remove documents.
    
    collectionName - name of the collection where the objects will removed, must not be null or empty.
    
    Returns:
    
    the Flux converted objects deleted by this operation.
  - findAllAndRemove
```
public <T> reactor.core.publisher.Flux<T> findAllAndRemove(Query query,
                                                           Class<T> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Returns and removes all documents matching the given query form the collection used to store the entityClass.
    
    Specified by:
    
    findAllAndRemove in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query document that specifies the criteria used to find and remove documents.
    
    entityClass - class of the pojo to be operated on.
    
    Returns:
    
    the Flux converted objects deleted by this operation.
  - findAllAndRemove
```
public <T> reactor.core.publisher.Flux<T> findAllAndRemove(Query query,
                                                           Class<T> entityClass,
                                                           String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Returns and removes all documents that match the provided query document criteria from the the collection used to store the entityClass. The Class parameter is also used to help convert the Id of the object if it is present in the query.
    
    Specified by:
    
    findAllAndRemove in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query document that specifies the criteria used to find and remove documents.
    
    entityClass - class of the pojo to be operated on.
    
    collectionName - name of the collection where the objects will removed, must not be null or empty.
    
    Returns:
    
    the Flux converted objects deleted by this operation.
  - tail
```
public <T> reactor.core.publisher.Flux<T> tail(Query query,
                                               Class<T> entityClass)
```
    Description copied from interface: ReactiveMongoOperations
    
    Map the results of an ad-hoc query on the collection for the entity class to a stream of objects of the specified type. The stream uses a tailable cursor that may be an infinite stream. The stream will not be completed unless the Subscription is canceled.
    The object is converted from the MongoDB native representation using an instance of MongoConverter. Unless configured otherwise, an instance of MappingMongoConverter will be used.
    The query is specified as a Query which can be created either using the BasicQuery or the more feature rich Query.
    
    Specified by:
    
    tail in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query class that specifies the criteria used to find a record and also an optional fields specification.
    
    entityClass - the parametrized type of the returned Flux.
    
    Returns:
    
    the Flux of converted objects.
  - tail
```
public <T> reactor.core.publisher.Flux<T> tail(@Nullable
                                               Query query,
                                               Class<T> entityClass,
                                               String collectionName)
```
    Description copied from interface: ReactiveMongoOperations
    
    Map the results of an ad-hoc query on the collection for the entity class to a stream of objects of the specified type. The stream uses a tailable cursor that may be an infinite stream. The stream will not be completed unless the Subscription is canceled.
    The object is converted from the MongoDB native representation using an instance of MongoConverter. Unless configured otherwise, an instance of MappingMongoConverter will be used.
    The query is specified as a Query which can be created either using the BasicQuery or the more feature rich Query.
    
    Specified by:
    
    tail in interface ReactiveMongoOperations
    
    Parameters:
    
    query - the query class that specifies the criteria used to find a record and also an optional fields specification.
    
    entityClass - the parametrized type of the returned Flux.
    
    collectionName - name of the collection to retrieve the objects from.
    
    Returns:
    
    the Flux of converted objects.
  - changeStream
```
public <T> reactor.core.publisher.Flux<ChangeStreamEvent<T>> changeStream(@Nullable
                                                                          String database,
                                                                          @Nullable
                                                                          String collectionName,
                                                                          ChangeStreamOptions options,
                                                                          Class<T> targetType)
```
    Description copied from interface: ReactiveMongoOperations
    
    Subscribe to a MongoDB Change Stream via the reactive infrastructure. Use the optional provided Aggregation to filter events. The stream will not be completed unless the Subscription is canceled.
    The ChangeStreamEvent.getBody() is mapped to the resultType while the ChangeStreamEvent.getRaw() contains the unmodified payload.
    Use ChangeStreamOptions to set arguments like the resumseToken for resuming change streams.
    
    Specified by:
    
    changeStream in interface ReactiveMongoOperations
    
    Parameters:
    
    database - the database to watch. Can be null, uses configured default if so.
    
    collectionName - the collection to watch. Can be null, watches all collections if so.
    
    options - must not be null. Use ChangeStreamOptions.empty().
    
    targetType - the result type to use.
    
    Returns:
    
    the Flux emitting events as they arrive.
    
    See Also:
    
    ChangeStreamOptions.getFilter()
  - mapReduce
```
public <T> reactor.core.publisher.Flux<T> mapReduce(Query filterQuery,
                                                    Class<?> domainType,
                                                    Class<T> resultType,
                                                    String mapFunction,
                                                    String reduceFunction,
                                                    MapReduceOptions options)
```
    Description copied from interface: ReactiveMongoOperations
    
    Execute a map-reduce operation. Use MapReduceOptions to optionally specify an output collection and other args.
    
    Specified by:
    
    mapReduce in interface ReactiveMongoOperations
    
    Parameters:
    
    filterQuery - the selection criteria for the documents going input to the map function. Must not be null.
    
    domainType - source type used to determine the input collection name and map the filter Query against. Must not be null.
    
    resultType - the mapping target of the operations result documents. Must not be null.
    
    mapFunction - the JavaScript map function. Must not be null.
    
    reduceFunction - the JavaScript reduce function. Must not be null.
    
    options - additional options like output collection. Must not be null.
    
    Returns:
    
    a Flux emitting the result document sequence. Never null.
  - mapReduce
```
public <T> reactor.core.publisher.Flux<T> mapReduce(Query filterQuery,
                                                    Class<?> domainType,
                                                    String inputCollectionName,
                                                    Class<T> resultType,
                                                    String mapFunction,
                                                    String reduceFunction,
                                                    MapReduceOptions options)
```
    Description copied from interface: ReactiveMongoOperations
    
    Execute a map-reduce operation. Use MapReduceOptions to optionally specify an output collection and other args.
    
    Specified by:
    
    mapReduce in interface ReactiveMongoOperations
    
    Parameters:
    
    filterQuery - the selection criteria for the documents going input to the map function. Must not be null.
    
    domainType - source type used to map the filter Query against. Must not be null.
    
    inputCollectionName - the input collection.
    
    resultType - the mapping target of the operations result documents. Must not be null.
    
    mapFunction - the JavaScript map function. Must not be null.
    
    reduceFunction - the JavaScript reduce function. Must not be null.
    
    options - additional options like output collection. Must not be null.
    
    Returns:
    
    a Flux emitting the result document sequence. Never null.
  - query
```
public <T> ReactiveFindOperation.ReactiveFind<T> query(Class<T> domainType)
```
    Description copied from interface: ReactiveFindOperation
    
    Start creating a find operation for the given domainType.
    
    Specified by:
    
    query in interface ReactiveFindOperation
    
    Parameters:
    
    domainType - must not be null.
    
    Returns:
    
    new instance of ReactiveFindOperation.ReactiveFind. Never null.
  - update
```
public <T> ReactiveUpdateOperation.ReactiveUpdate<T> update(Class<T> domainType)
```
    Description copied from interface: ReactiveUpdateOperation
    
    Start creating an update operation for the given domainType.
    
    Specified by:
    
    update in interface ReactiveUpdateOperation
    
    Parameters:
    
    domainType - must not be null.
    
    Returns:
    
    new instance of ReactiveUpdateOperation.ReactiveUpdate. Never null.
  - remove
```
public <T> ReactiveRemoveOperation.ReactiveRemove<T> remove(Class<T> domainType)
```
    Description copied from interface: ReactiveRemoveOperation
    
    Start creating a remove operation for the given domainType.
    
    Specified by:
    
    remove in interface ReactiveRemoveOperation
    
    Parameters:
    
    domainType - must not be null.
    
    Returns:
    
    new instance of ReactiveRemoveOperation.ReactiveRemove. Never null.
  - insert
```
public <T> ReactiveInsertOperation.ReactiveInsert<T> insert(Class<T> domainType)
```
    Description copied from interface: ReactiveInsertOperation
    
    Start creating an insert operation for given domainType.
    
    Specified by:
    
    insert in interface ReactiveInsertOperation
    
    Parameters:
    
    domainType - must not be null.
    
    Returns:
    
    new instance of ReactiveInsertOperation.ReactiveInsert. Never null.
  - aggregateAndReturn
```
public <T> ReactiveAggregationOperation.ReactiveAggregation<T> aggregateAndReturn(Class<T> domainType)
```
    Description copied from interface: ReactiveAggregationOperation
    
    Start creating an aggregation operation that returns results mapped to the given domain type.
    Use TypedAggregation to specify a potentially different input type for he aggregation.
    
    Specified by:
    
    aggregateAndReturn in interface ReactiveAggregationOperation
    
    Parameters:
    
    domainType - must not be null.
    
    Returns:
    
    new instance of ReactiveAggregationOperation.ReactiveAggregation. Never null.
  - mapReduce
```
public <T> ReactiveMapReduceOperation.ReactiveMapReduce<T> mapReduce(Class<T> domainType)
```
    Description copied from interface: ReactiveMapReduceOperation
    
    Start creating a mapReduce operation for the given domainType.
    
    Specified by:
    
    mapReduce in interface ReactiveMapReduceOperation
    
    Parameters:
    
    domainType - must not be null.
    
    Returns:
    
    new instance of ExecutableFindOperation.ExecutableFind.
  - doFindAndDelete
```
protected <T> reactor.core.publisher.Flux<T> doFindAndDelete(String collectionName,
                                                             Query query,
                                                             Class<T> entityClass)
```
    Retrieve and remove all documents matching the given query by calling find(Query, Class, String) and remove(Query, Class, String), whereas the Query for remove(Query, Class, String) is constructed out of the find result.
    
    Parameters:
    
    collectionName -
    
    query -
    
    entityClass -
    
    Returns:
  - doCreateCollection
```
protected reactor.core.publisher.Mono<com.mongodb.reactivestreams.client.MongoCollection<org.bson.Document>> doCreateCollection(String collectionName,
                                                                                                                                com.mongodb.client.model.CreateCollectionOptions collectionOptions)
```
    Create the specified collection using the provided options
    
    Parameters:
    
    collectionName -
    
    collectionOptions -
    
    Returns:
    
    the collection that was created
  - doFindOne
```
protected <T> reactor.core.publisher.Mono<T> doFindOne(String collectionName,
                                                       org.bson.Document query,
                                                       @Nullable
                                                       org.bson.Document fields,
                                                       Class<T> entityClass,
                                                       @Nullable
                                                       Collation collation)
```
    Map the results of an ad-hoc query on the default MongoDB collection to an object using the template's converter. The query document is specified as a standard Document and so is the fields specification.
    
    Parameters:
    
    collectionName - name of the collection to retrieve the objects from.
    
    query - the query document that specifies the criteria used to find a record.
    
    fields - the document that specifies the fields to be returned.
    
    entityClass - the parameterized type of the returned list.
    
    collation - can be null.
    
    Returns:
    
    the List of converted objects.
  - doFind
```
protected <T> reactor.core.publisher.Flux<T> doFind(String collectionName,
                                                    org.bson.Document query,
                                                    org.bson.Document fields,
                                                    Class<T> entityClass)
```
    Map the results of an ad-hoc query on the default MongoDB collection to a List using the template's converter. The query document is specified as a standard Document and so is the fields specification.
    
    Parameters:
    
    collectionName - name of the collection to retrieve the objects from
    
    query - the query document that specifies the criteria used to find a record
    
    fields - the document that specifies the fields to be returned
    
    entityClass - the parameterized type of the returned list.
    
    Returns:
    
    the List of converted objects.
  - doFind
```
protected <T> reactor.core.publisher.Flux<T> doFind(String collectionName,
                                                    org.bson.Document query,
                                                    org.bson.Document fields,
                                                    Class<T> entityClass,
                                                    org.springframework.data.mongodb.core.FindPublisherPreparer preparer)
```
    Map the results of an ad-hoc query on the default MongoDB collection to a List of the specified type. The object is converted from the MongoDB native representation using an instance of MongoConverter. The query document is specified as a standard Document and so is the fields specification.
    
    Parameters:
    
    collectionName - name of the collection to retrieve the objects from.
    
    query - the query document that specifies the criteria used to find a record.
    
    fields - the document that specifies the fields to be returned.
    
    entityClass - the parameterized type of the returned list.
    
    preparer - allows for customization of the DBCursor used when iterating over the result set, (apply limits, skips and so on).
    
    Returns:
    
    the List of converted objects.
  - doFind
```
protected <S,T> reactor.core.publisher.Flux<T> doFind(String collectionName,
                                                      org.bson.Document query,
                                                      org.bson.Document fields,
                                                      Class<S> entityClass,
                                                      @Nullable
                                                      org.springframework.data.mongodb.core.FindPublisherPreparer preparer,
                                                      org.springframework.data.mongodb.core.ReactiveMongoTemplate.DocumentCallback<T> objectCallback)
```
  - convertToCreateCollectionOptions
```
protected com.mongodb.client.model.CreateCollectionOptions convertToCreateCollectionOptions(@Nullable
                                                                                            CollectionOptions collectionOptions)
```
  - convertToCreateCollectionOptions
```
protected com.mongodb.client.model.CreateCollectionOptions convertToCreateCollectionOptions(@Nullable
                                                                                            CollectionOptions collectionOptions,
                                                                                            Class<?> entityType)
```
  - doFindAndRemove
```
protected <T> reactor.core.publisher.Mono<T> doFindAndRemove(String collectionName,
                                                             org.bson.Document query,
                                                             org.bson.Document fields,
                                                             org.bson.Document sort,
                                                             @Nullable
                                                             Collation collation,
                                                             Class<T> entityClass)
```
    Map the results of an ad-hoc query on the default MongoDB collection to an object using the template's converter. The first document that matches the query is returned and also removed from the collection in the database.
    The query document is specified as a standard Document and so is the fields specification.
    
    Parameters:
    
    collectionName - name of the collection to retrieve the objects from
    
    query - the query document that specifies the criteria used to find a record
    
    collation - collation
    
    entityClass - the parameterized type of the returned list.
    
    Returns:
    
    the List of converted objects.
  - doFindAndModify
```
protected <T> reactor.core.publisher.Mono<T> doFindAndModify(String collectionName,
                                                             org.bson.Document query,
                                                             org.bson.Document fields,
                                                             org.bson.Document sort,
                                                             Class<T> entityClass,
                                                             Update update,
                                                             FindAndModifyOptions options)
```
  - doFindAndReplace
```
protected <T> reactor.core.publisher.Mono<T> doFindAndReplace(String collectionName,
                                                              org.bson.Document mappedQuery,
                                                              org.bson.Document mappedFields,
                                                              org.bson.Document mappedSort,
                                                              com.mongodb.client.model.Collation collation,
                                                              Class<?> entityType,
                                                              org.bson.Document replacement,
                                                              FindAndReplaceOptions options,
                                                              Class<T> resultType)
```
    Customize this part for findAndReplace.
    
    Parameters:
    
    collectionName - The name of the collection to perform the operation in.
    
    mappedQuery - the query to look up documents.
    
    mappedFields - the fields to project the result to.
    
    mappedSort - the sort to be applied when executing the query.
    
    collation - collation settings for the query. Can be null.
    
    entityType - the source domain type.
    
    replacement - the replacement Document.
    
    options - applicable options.
    
    resultType - the target domain type.
    
    Returns:
    
    Mono.empty() if object does not exist, return new is false and upsert is false.
    
    Since:
    
    2.1
  - maybeEmitEvent
```
protected <E extends MongoMappingEvent<T>,T> E maybeEmitEvent(E event)
```
  - ensureNotIterable
```
protected void ensureNotIterable(Object o)
```
  - prepareCollection
```
protected com.mongodb.reactivestreams.client.MongoCollection<org.bson.Document> prepareCollection(com.mongodb.reactivestreams.client.MongoCollection<org.bson.Document> collection)
```
    Prepare the collection before any processing is done using it. This allows a convenient way to apply settings like slaveOk() etc. Can be overridden in sub-classes.
    
    Parameters:
    
    collection -
  - prepareDatabase
```
protected com.mongodb.reactivestreams.client.MongoDatabase prepareDatabase(com.mongodb.reactivestreams.client.MongoDatabase database)
```
    Parameters:
    
    database -
    
    Returns:
    
    Since:
    
    2.1
  - prepareWriteConcern
```
@Nullable
protected com.mongodb.WriteConcern prepareWriteConcern(MongoAction mongoAction)
```
    Prepare the WriteConcern before any processing is done using it. This allows a convenient way to apply custom settings in sub-classes.
    The returned WriteConcern will be defaulted to WriteConcern.ACKNOWLEDGED when WriteResultChecking is set to WriteResultChecking.EXCEPTION.
    
    Parameters:
    
    mongoAction - any WriteConcern already configured or null.
    
    Returns:
    
    The prepared WriteConcern or null.
    
    See Also:
    
    setWriteConcern(WriteConcern), setWriteConcernResolver(WriteConcernResolver)

Class ReactiveMongoTemplate

Nested Class Summary

Nested classes/interfaces inherited from interface org.springframework.data.mongodb.core.ReactiveFindOperation

Nested classes/interfaces inherited from interface org.springframework.data.mongodb.core.ReactiveInsertOperation

Nested classes/interfaces inherited from interface org.springframework.data.mongodb.core.ReactiveUpdateOperation

Nested classes/interfaces inherited from interface org.springframework.data.mongodb.core.ReactiveRemoveOperation

Nested classes/interfaces inherited from interface org.springframework.data.mongodb.core.ReactiveAggregationOperation

Nested classes/interfaces inherited from interface org.springframework.data.mongodb.core.ReactiveMapReduceOperation

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface org.springframework.data.mongodb.core.ReactiveMongoOperations

Field Detail

NO_OP_REF_RESOLVER

Constructor Detail

ReactiveMongoTemplate

ReactiveMongoTemplate

ReactiveMongoTemplate

ReactiveMongoTemplate

Method Detail

setWriteResultChecking

setWriteConcern

setWriteConcernResolver

setReadPreference

setApplicationContext

getConverter

indexOps

indexOps

getCollectionName

executeCommand

executeCommand

executeCommand

execute

execute

execute

withSession

inTransaction

inTransaction

withSession

withSession

createFlux

createMono

createFlux

createMono

createCollection

createCollection

createCollection

createCollection

getCollection

collectionExists

collectionExists

dropCollection

dropCollection

getCollectionNames

getMongoDatabase

doGetDatabase

findOne

findOne

exists

exists

exists

find

find

findById

findById

findDistinct

findDistinct

aggregate

aggregate

aggregate

aggregate

aggregate

geoNear

geoNear

geoNear

findAndModify

findAndModify

findAndModify

findAndModify