Package org.springframework.data.jdbc.core.convert

Class IdGeneratingEntityCallback

java.lang.Object

org.springframework.data.jdbc.core.convert.IdGeneratingEntityCallback

All Implemented Interfaces:

EntityCallback<Object>, BeforeSaveCallback<Object>

public class IdGeneratingEntityCallback
extends Object
implements BeforeSaveCallback<Object>

Callback for generating identifier values through a database sequence.

Since:

3.5

Author:

Mikhail Polivakha, Mark Paluch

Constructor Summary

Constructors

Constructor	Description
IdGeneratingEntityCallback(MappingContext<RelationalPersistentEntity<?>,? extends RelationalPersistentProperty> context, Dialect dialect, NamedParameterJdbcOperations operations)

Method Summary

Modifier and Type	Method	Description
Object	onBeforeSave(Object aggregate, MutableAggregateChange<Object> aggregateChange)	Entity callback method invoked before an aggregate root is saved.

Methods inherited from class java.lang.Object

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

Constructor Details

IdGeneratingEntityCallback

public IdGeneratingEntityCallback(MappingContext<RelationalPersistentEntity<?>,? extends RelationalPersistentProperty> context,
 Dialect dialect,
 NamedParameterJdbcOperations operations)

Method Details

onBeforeSave

public Object onBeforeSave(Object aggregate,
 MutableAggregateChange<Object> aggregateChange)

Description copied from interface: BeforeSaveCallback

Entity callback method invoked before an aggregate root is saved. Can return either the same or a modified instance of the aggregate and can modify MutableAggregateChange contents. This method is called after converting the aggregate to MutableAggregateChange. 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.

Specified by:

onBeforeSave in interface BeforeSaveCallback<Object>

Parameters:

aggregate - the aggregate.

aggregateChange - the associated MutableAggregateChange.

Returns:

the aggregate object to be persisted.