VersionPropertyHandler.java

/**
 * <copyright>
 *
 * Copyright (c) 2005, 2006, 2007, 2008 Springsite BV (The Netherlands) 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
 * </copyright>
 *
 * $Id: VersionPropertyHandler.java,v 1.6 2008/06/28 22:41:47 mtaal Exp $
 */

package org.eclipse.emf.teneo.hibernate.mapping.property;

import java.lang.reflect.Method;
import java.util.Map;

import org.eclipse.emf.teneo.extension.ExtensionPoint;
import org.eclipse.emf.teneo.hibernate.mapping.identifier.IdentifierCacheHandler;
import org.hibernate.HibernateException;
import org.hibernate.PropertyNotFoundException;
import org.hibernate.engine.SessionFactoryImplementor;
import org.hibernate.engine.SessionImplementor;
import org.hibernate.property.Getter;
import org.hibernate.property.PropertyAccessor;
import org.hibernate.property.Setter;

/**
 * Reads the version from the internal version cache.
 * 
 * @author <a href="mailto:mtaal@elver.org">Martin Taal</a>
 * @version $Revision: 1.6 $
 */
@SuppressWarnings("unchecked")
public class VersionPropertyHandler implements Getter, Setter, PropertyAccessor, ExtensionPoint {
	/**
	 * Generated Serial Version ID
	 */
	private static final long serialVersionUID = -7004553329654520847L;

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.hibernate.property.PropertyAccessor#getGetter(java.lang.Class, java.lang.String)
	 */
	public Getter getGetter(Class theClass, String propertyName) throws PropertyNotFoundException {
		return this;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.hibernate.property.PropertyAccessor#getSetter(java.lang.Class, java.lang.String)
	 */
	public Setter getSetter(Class theClass, String propertyName) throws PropertyNotFoundException {
		return this;
	}

	/**
	 * Reads the version from the versioncache
	 */
	public Object get(Object owner) throws HibernateException {
		return IdentifierCacheHandler.getInstance().getVersion(owner);
	}

	/**
	 * Reads the version from the versioncache
	 */
	public Object getForInsert(Object owner, Map mergeMap, SessionImplementor session) throws HibernateException {
		return IdentifierCacheHandler.getInstance().getVersion(owner);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.hibernate.property.Getter#getMethod()
	 */
	public Method getMethod() {
		return null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.hibernate.property.Getter#getMethodName()
	 */
	public String getMethodName() {
		return null;
	}

	/** Returns Integer.class */
	public Class getReturnType() {
		return Integer.class;
	}

	/** Sets the version in the internal version cache */
	public void set(Object target, Object value, SessionFactoryImplementor factory) throws HibernateException {
		IdentifierCacheHandler.getInstance().setVersion(target, value);
	}
}