org.hibernate.jpa.event.internal.core.JpaFlushEntityEventListener Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.jpa.event.internal.core;
import org.hibernate.SessionFactory;
import org.hibernate.bytecode.enhance.spi.LazyPropertyInitializer;
import org.hibernate.engine.spi.EntityEntry;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.engine.spi.Status;
import org.hibernate.event.internal.DefaultFlushEntityEventListener;
import org.hibernate.jpa.event.spi.jpa.CallbackRegistryConsumer;
import org.hibernate.jpa.event.spi.jpa.CallbackRegistry;
import org.hibernate.metadata.ClassMetadata;
import org.hibernate.persister.entity.EntityPersister;
import org.hibernate.type.Type;
/**
* Overrides the LifeCycle OnSave call to call the PreUpdate operation
*
* @author Emmanuel Bernard
*/
public class JpaFlushEntityEventListener extends DefaultFlushEntityEventListener implements CallbackRegistryConsumer {
private CallbackRegistry callbackRegistry;
public void injectCallbackRegistry(CallbackRegistry callbackRegistry) {
this.callbackRegistry = callbackRegistry;
}
public JpaFlushEntityEventListener() {
super();
}
public JpaFlushEntityEventListener(CallbackRegistry callbackRegistry) {
super();
this.callbackRegistry = callbackRegistry;
}
@Override
protected boolean invokeInterceptor(
SessionImplementor session,
Object entity,
EntityEntry entry,
Object[] values,
EntityPersister persister) {
boolean isDirty = false;
if ( entry.getStatus() != Status.DELETED ) {
if ( callbackRegistry.preUpdate( entity ) ) {
isDirty = copyState( entity, persister.getPropertyTypes(), values, session.getFactory() );
}
}
return super.invokeInterceptor( session, entity, entry, values, persister ) || isDirty;
}
private boolean copyState(Object entity, Type[] types, Object[] state, SessionFactory sf) {
// copy the entity state into the state array and return true if the state has changed
ClassMetadata metadata = sf.getClassMetadata( entity.getClass() );
Object[] newState = metadata.getPropertyValues( entity );
int size = newState.length;
boolean isDirty = false;
for ( int index = 0; index < size ; index++ ) {
if ( ( state[index] == LazyPropertyInitializer.UNFETCHED_PROPERTY &&
newState[index] != LazyPropertyInitializer.UNFETCHED_PROPERTY ) ||
( state[index] != newState[index] && !types[index].isEqual( state[index], newState[index] ) ) ) {
isDirty = true;
state[index] = newState[index];
}
}
return isDirty;
}
}