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The core O/RM functionality as provided by Hibernate

There is a newer version: 5.2.10.Final-patched-play-1.5.0

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Middleware LLC.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 *
 */
package org.hibernate;
import java.io.Serializable;

import org.hibernate.pretty.MessageHelper;

/**
 * This exception is thrown when an operation would
 * break session-scoped identity. This occurs if the
 * user tries to associate two different instances of
 * the same Java class with a particular identifier,
 * in the scope of a single Session.
 *
 * @author Gavin King
 */
public class NonUniqueObjectException extends HibernateException {
	private final Serializable identifier;
	private final String entityName;

	public NonUniqueObjectException(String message, Serializable id, String clazz) {
		super(message);
		this.entityName = clazz;
		this.identifier = id;
	}

	public NonUniqueObjectException(Serializable id, String clazz) {
		this("a different object with the same identifier value was already associated with the session", id, clazz);
	}

	public Serializable getIdentifier() {
		return identifier;
	}

	public String getMessage() {
		return super.getMessage() + ": " +
			MessageHelper.infoString(entityName, identifier);
	}

	public String getEntityName() {
		return entityName;
	}

}