EDIT

cdmlib-model/src/main/java/eu/etaxonomy/cdm/model/common/IProxyHelper.java -text

cdmlib-model/src/main/java/eu/etaxonomy/cdm/model/common/ProxyHelperHibernateImpl.java -text

import javax.persistence.Temporal;

import javax.persistence.TemporalType;

	private static IProxyHelper proxyHelper = new ProxyHelperHibernateImpl();

	 public <T extends CdmBase> T deproxy(Class<T> clazz) throws ClassCastException {

		 return proxyHelper.deproxy(this, clazz);

	     return proxyHelper.isInstanceOf(this, clazz);

package eu.etaxonomy.cdm.model.common;

public interface IProxyHelper {

	// ************************** Hibernate proxies *******************/

	/**

	 * These methods are present due to HHH-1517 - that in a one-to-many

	 * relationship with a superclass at the "one" end, the proxy created

	 * by hibernate is the superclass, and not the subclass, resulting in

	 * a classcastexception when you try to cast it.

	 *

	 * Hopefully this will be resolved through improvements with the creation of

	 * proxy objects by hibernate and the following methods will become redundant,

	 * but for the time being . . .

	 * @param <T>

	 * @param object

	 * @param clazz

	 * @return

	 * @throws ClassCastException

	 */

	public <T> T deproxy(Object object, Class<T> clazz)

			throws ClassCastException;

	public boolean isInstanceOf(Object object, Class clazz)

			throws ClassCastException;

}

/**

* Copyright (C) 2007 EDIT

* European Distributed Institute of Taxonomy 

* http://www.e-taxonomy.eu

* 

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.model.common;

import org.apache.log4j.Logger;

import org.hibernate.proxy.HibernateProxy;

/**

 * @author a.mueller

 * @created 03.03.2009

 * @version 1.0

 */

public class ProxyHelperHibernateImpl implements IProxyHelper {

	@SuppressWarnings("unused")

	private static final Logger logger = Logger.getLogger(ProxyHelperHibernateImpl.class);

	// ************************** Hibernate proxies *******************/

	/* (non-Javadoc)

	 * @see eu.etaxonomy.cdm.model.common.IProxyHelper#deproxy(java.lang.Object, java.lang.Class)

	 */

	 public <T> T deproxy(Object object, Class<T> clazz) throws ClassCastException {

	     if (object instanceof HibernateProxy) {

	         return clazz.cast(((HibernateProxy) object).getHibernateLazyInitializer().getImplementation());

	     } else {

	         return clazz.cast(object);

	     }

	 }

	 /* (non-Javadoc)

	 * @see eu.etaxonomy.cdm.model.common.IProxyHelper#isInstanceOf(java.lang.Object, java.lang.Class)

	 */

	public boolean isInstanceOf(Object object, Class clazz) throws ClassCastException {

	     if (clazz == null){

	    	 return false;

	     }

		 if (object instanceof HibernateProxy) {

	    	 Object impl =  ((HibernateProxy) object).getHibernateLazyInitializer().getImplementation();

	         Class implClass = impl.getClass();

	         return clazz.isAssignableFrom(implClass);

	     } else {

	         return clazz.isAssignableFrom(object.getClass());

	     }

	 }

}