org.springframework.data.mongodb.repository.query

Class AbstractReactiveMongoQuery

java.lang.Object

org.springframework.data.mongodb.repository.query.AbstractReactiveMongoQuery

All Implemented Interfaces:

RepositoryQuery

Direct Known Subclasses:

ReactivePartTreeMongoQuery, ReactiveStringBasedAggregation, ReactiveStringBasedMongoQuery

public abstract class AbstractReactiveMongoQuery
extends Object
implements RepositoryQuery

Base class for reactive RepositoryQuery implementations for MongoDB.

Since:

2.0

Author:

Mark Paluch, Christoph Strobl

Constructor Summary

Constructors

Constructor and Description
AbstractReactiveMongoQuery(ReactiveMongoQueryMethod method, ReactiveMongoOperations operations, ExpressionParser expressionParser, ReactiveQueryMethodEvaluationContextProvider evaluationContextProvider) Creates a new AbstractReactiveMongoQuery from the given MongoQueryMethod and MongoOperations.

Method Summary

Modifier and Type	Method and Description
protected reactor.core.publisher.Mono<Query>	createCountQuery(ConvertingParameterAccessor accessor) Creates a Query instance using the given ConvertingParameterAccessor.
protected abstract reactor.core.publisher.Mono<Query>	createQuery(ConvertingParameterAccessor accessor) Creates a Query instance using the given ParameterAccessor
protected org.reactivestreams.Publisher<Object>	doExecute(ReactiveMongoQueryMethod method, ResultProcessor processor, ConvertingParameterAccessor accessor, Class<?> typeToRead) Execute the RepositoryQuery of the given method with the parameters provided by the accessor
org.reactivestreams.Publisher<Object>	execute(Object[] parameters)
protected reactor.core.publisher.Mono<org.bson.codecs.configuration.CodecRegistry>	getCodecRegistry()
MongoQueryMethod	getQueryMethod()
protected reactor.core.publisher.Mono<SpELExpressionEvaluator>	getSpelEvaluatorFor(ExpressionDependencies dependencies, ConvertingParameterAccessor accessor) Obtain a publisher emitting the SpELExpressionEvaluator suitable to evaluate expressions backed by the given dependencies.
protected abstract boolean	isCountQuery() Returns whether the query should get a count projection applied.
protected abstract boolean	isDeleteQuery() Return weather the query should delete matching documents.
protected abstract boolean	isExistsQuery() Returns whether the query should get an exists projection applied.
protected abstract boolean	isLimiting() Return whether the query has an explicit limit set.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractReactiveMongoQuery

public AbstractReactiveMongoQuery(ReactiveMongoQueryMethod method,
                                  ReactiveMongoOperations operations,
                                  ExpressionParser expressionParser,
                                  ReactiveQueryMethodEvaluationContextProvider evaluationContextProvider)

Creates a new AbstractReactiveMongoQuery from the given MongoQueryMethod and MongoOperations.

Parameters:

method - must not be null.

operations - must not be null.

expressionParser - must not be null.

evaluationContextProvider - must not be null.

Method Detail

getQueryMethod

public MongoQueryMethod getQueryMethod()

Specified by:

getQueryMethod in interface RepositoryQuery

execute

public org.reactivestreams.Publisher<Object> execute(Object[] parameters)

Specified by:

execute in interface RepositoryQuery

doExecute

protected org.reactivestreams.Publisher<Object> doExecute(ReactiveMongoQueryMethod method,
                                                          ResultProcessor processor,
                                                          ConvertingParameterAccessor accessor,
                                                          @Nullable
                                                          Class<?> typeToRead)

Execute the RepositoryQuery of the given method with the parameters provided by the accessor

Parameters:

method - the ReactiveMongoQueryMethod invoked. Never null.

processor - ResultProcessor for post procession. Never null.

accessor - for providing invocation arguments. Never null.

typeToRead - the desired component target type. Can be null.

createCountQuery

protected reactor.core.publisher.Mono<Query> createCountQuery(ConvertingParameterAccessor accessor)

Creates a Query instance using the given ConvertingParameterAccessor. Will delegate to createQuery(ConvertingParameterAccessor) by default but allows customization of the count query to be triggered.

Parameters:

accessor - must not be null.

Returns:

getSpelEvaluatorFor

protected reactor.core.publisher.Mono<SpELExpressionEvaluator> getSpelEvaluatorFor(ExpressionDependencies dependencies,
                                                                                   ConvertingParameterAccessor accessor)

Obtain a publisher emitting the SpELExpressionEvaluator suitable to evaluate expressions backed by the given dependencies.

Parameters:

dependencies - must not be null.

accessor - must not be null.

Returns:

a Mono emitting the SpELExpressionEvaluator when ready.

Since:

2.4

getCodecRegistry

protected reactor.core.publisher.Mono<org.bson.codecs.configuration.CodecRegistry> getCodecRegistry()

Returns:

a Mono emitting the CodecRegistry when ready.

Since:

2.4

createQuery

protected abstract reactor.core.publisher.Mono<Query> createQuery(ConvertingParameterAccessor accessor)

Creates a Query instance using the given ParameterAccessor

Parameters:

accessor - must not be null.

Returns:

isCountQuery

protected abstract boolean isCountQuery()

Returns whether the query should get a count projection applied.

Returns:

isExistsQuery

protected abstract boolean isExistsQuery()

Returns whether the query should get an exists projection applied.

Returns:

Since:

2.0.9

isDeleteQuery

protected abstract boolean isDeleteQuery()

Return weather the query should delete matching documents.

Returns:

Since:

1.5

isLimiting

protected abstract boolean isLimiting()

Return whether the query has an explicit limit set.

Returns:

Since:

2.0.4