org.springframework.data.r2dbc.core

Interface ConnectionAccessor

public interface ConnectionAccessor

Interface declaring methods that accept callback Function to operate within the scope of a Connection. Callback functions operate on a provided connection and must not close the connection as the connections may be pooled or be subject to other kinds of resource management.

Callback functions are responsible for creating a Publisher that defines the scope of how long the allocated Connection is valid. Connections are released after the publisher terminates.

Author:

Mark Paluch

Method Summary

Modifier and Type	Method and Description
<T> reactor.core.publisher.Mono<T>	inConnection(Function<Connection,reactor.core.publisher.Mono<T>> action) Execute a callback Function within a Connection scope.
<T> reactor.core.publisher.Flux<T>	inConnectionMany(Function<Connection,reactor.core.publisher.Flux<T>> action) Execute a callback Function within a Connection scope.

Method Detail

inConnection

<T> reactor.core.publisher.Mono<T> inConnection(Function<Connection,reactor.core.publisher.Mono<T>> action)
                                         throws DataAccessException

Execute a callback Function within a Connection scope. The function is responsible for creating a Mono. The connection is released after the Mono terminates (or the subscription is cancelled). Connection resources must not be passed outside of the Function closure, otherwise resources may get defunct.

Parameters:

action - must not be null.

Returns:

the resulting Mono.

Throws:

DataAccessException

inConnectionMany

<T> reactor.core.publisher.Flux<T> inConnectionMany(Function<Connection,reactor.core.publisher.Flux<T>> action)
                                             throws DataAccessException

Execute a callback Function within a Connection scope. The function is responsible for creating a Flux. The connection is released after the Flux terminates (or the subscription is cancelled). Connection resources must not be passed outside of the Function closure, otherwise resources may get defunct.

Parameters:

action - must not be null.

Returns:

the resulting Flux.

Throws:

DataAccessException