org.springframework.data.cassandra.core.mapping.event

Interface ReactiveBeforeSaveCallback<T>

All Superinterfaces:

EntityCallback<T>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface ReactiveBeforeSaveCallback<T>
extends EntityCallback<T>

Entity callback triggered before save of a row.

Since:

2.2

Author:

Mark Paluch

See Also:

ReactiveEntityCallbacks

Method Summary

Modifier and Type	Method and Description
org.reactivestreams.Publisher<T>	onBeforeSave(T entity, CqlIdentifier tableName, com.datastax.driver.core.Statement statement) Entity callback method invoked before a domain object is saved.

Method Detail

onBeforeSave

org.reactivestreams.Publisher<T> onBeforeSave(T entity,
                                              CqlIdentifier tableName,
                                              com.datastax.driver.core.Statement statement)

Entity callback method invoked before a domain object is saved. Can return either the same of a modified instance of the domain object and can modify Statement contents. This method is called after converting the entity to Statement so effectively the row is used as outcome of invoking this callback.

Parameters:

entity - the domain object to save.

tableName - name of the table.

statement - Statement representing the entity operation.

Returns:

a Publisher emitting the domain object to be persisted.