org.springframework.data.neo4j.repository.support

Interface ReactiveCypherdslStatementExecutor<T>

Type Parameters:

T - The domain type of the repository

@API(status=STABLE,
     since="6.1")
public interface ReactiveCypherdslStatementExecutor<T>

An interface that can be added to any reactive repository so that the repository exposes several methods taking in a Statement from the Cypher-DSL, that allows for full customization of the queries executed in a programmatic way in contrast to provide custom queries declaratively via @Query annotations.

Since:

6.1

Author:

Michael J. Simons

Method Summary

Modifier and Type	Method and Description
reactor.core.publisher.Flux<T>	findAll(org.neo4j.cypherdsl.core.Statement statement) Find all elements of the domain as defined by the statement.
<PT> reactor.core.publisher.Flux<PT>	findAll(org.neo4j.cypherdsl.core.Statement statement, Class<PT> projectionClass) Creates a custom projection of the repository type by a Cypher-DSL based statement.
reactor.core.publisher.Mono<T>	findOne(org.neo4j.cypherdsl.core.Statement statement) Find one element of the domain as defined by the statement.
<PT> reactor.core.publisher.Mono<PT>	findOne(org.neo4j.cypherdsl.core.Statement statement, Class<PT> projectionClass) Creates a custom projection of the repository type by a Cypher-DSL based statement.

Method Detail

findOne

reactor.core.publisher.Mono<T> findOne(org.neo4j.cypherdsl.core.Statement statement)

Find one element of the domain as defined by the statement. The statement must return either no or exactly one mappable record.

Parameters:

statement - A full Cypher statement, matching and returning all required nodes, relationships and properties

Returns:

An empty Mono or a Mono containing the single element

findOne

<PT> reactor.core.publisher.Mono<PT> findOne(org.neo4j.cypherdsl.core.Statement statement,
                                             Class<PT> projectionClass)

Creates a custom projection of the repository type by a Cypher-DSL based statement. The statement must return either no or exactly one mappable record.

Type Parameters:

PT - The type of the projection

Parameters:

statement - A full Cypher statement, matching and returning all required nodes, relationships and properties

projectionClass - The class of the projection type

Returns:

An empty Mono or a Mono containing the single, projected element

findAll

reactor.core.publisher.Flux<T> findAll(org.neo4j.cypherdsl.core.Statement statement)

Find all elements of the domain as defined by the statement.

Parameters:

statement - A full Cypher statement, matching and returning all required nodes, relationships and properties

Returns:

A publisher full of domain objects

findAll

<PT> reactor.core.publisher.Flux<PT> findAll(org.neo4j.cypherdsl.core.Statement statement,
                                             Class<PT> projectionClass)

Creates a custom projection of the repository type by a Cypher-DSL based statement.

Type Parameters:

PT - The type of the projection

Parameters:

statement - A full Cypher statement, matching and returning all required nodes, relationships and properties

projectionClass - The class of the projection type

Returns:

A publisher full of projections