org.springframework.data.relational.core.mapping.event

Class BeforeSaveEvent<E>

java.lang.Object

java.util.EventObject

org.springframework.context.ApplicationEvent

org.springframework.data.relational.core.mapping.event.AbstractRelationalEvent<E>

org.springframework.data.relational.core.mapping.event.RelationalEventWithEntity<E>

org.springframework.data.relational.core.mapping.event.RelationalSaveEvent<E>

org.springframework.data.relational.core.mapping.event.BeforeSaveEvent<E>

All Implemented Interfaces:

Serializable, RelationalEvent<E>, WithAggregateChange<E>, WithEntity<E>

public class BeforeSaveEvent<E>
extends RelationalSaveEvent<E>

An ApplicationEvent that gets triggered before changes are applied to the database, after the aggregate was converted to a database change.

Changes to the aggregate are not taken into account to decide whether the change will be an insert or update. Use the BeforeConvertCallback to change the persistent the entity before being converted.

Currently a BeforeSaveEvent may be used to create an Id for new aggregate roots. This is for backward compatibility purposes within the 2.x development line. The preferred way to do this is to use a BeforeConvertCallback or BeforeConvertEvent and beginning with 3.0. this will be the only correct way to do this.

Author:

Jens Schauder

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.EventObject

source

Constructor Summary

Constructors

Constructor and Description
BeforeSaveEvent(E instance, AggregateChange<E> change)

Method Summary

Methods inherited from class org.springframework.data.relational.core.mapping.event.RelationalSaveEvent

getAggregateChange

Methods inherited from class org.springframework.data.relational.core.mapping.event.RelationalEventWithEntity

getEntity, getType

Methods inherited from class org.springframework.context.ApplicationEvent

getTimestamp

Methods inherited from class java.util.EventObject

getSource, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.data.relational.core.mapping.event.RelationalEvent

getEntity, getType

Constructor Detail

BeforeSaveEvent

public BeforeSaveEvent(E instance,
                       AggregateChange<E> change)

Parameters:

instance - the entity about to get saved. Must not be null.

change - the AggregateChange that is going to get applied to the database. Must not be null.