| /* |
| * Copyright (c) 2010-2013, 2015 Eike Stepper (Berlin, Germany) and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Martin Taal - initial api |
| * Eike Stepper - maintenance |
| */ |
| |
| package org.eclipse.emf.cdo.examples.hibernate.server; |
| |
| import org.hibernate.engine.spi.SessionImplementor; |
| import org.hibernate.id.UUIDHexGenerator; |
| import org.hibernate.persister.entity.EntityPersister; |
| |
| import java.io.Serializable; |
| |
| /** |
| * An example of overriding the standard UUID generator of Hibernate to prevent it overwriting an already existing id in |
| * an object. |
| * |
| * @author mtaal |
| */ |
| |
| public class CDOExampleUUIDHexGenerator extends UUIDHexGenerator |
| { |
| @Override |
| public Serializable generate(SessionImplementor session, Object obj) |
| { |
| final EntityPersister entityPersister = session.getEntityPersister(null, obj); |
| final Serializable id = entityPersister.getIdentifier(obj, session); |
| if (id != null) |
| { |
| return id; |
| } |
| |
| return super.generate(session, obj); |
| } |
| } |