org.hibernate.envers.DefaultRevisionEntity Maven / Gradle / Ivy

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Entity versioning support
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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008, 2013, Red Hat Inc. 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 Inc.
 *
 * 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.envers;

import java.io.Serializable;
import java.text.DateFormat;
import java.util.Date;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.MappedSuperclass;
import javax.persistence.Transient;

/**
 * @author Adam Warski (adam at warski dot org)
 */
@MappedSuperclass
public class DefaultRevisionEntity implements Serializable {
	private static final long serialVersionUID = 8530213963961662300L;

	@Id
	@GeneratedValue
	@RevisionNumber
	private int id;

	@RevisionTimestamp
	private long timestamp;

	public int getId() {
		return id;
	}

	public void setId(int id) {
		this.id = id;
	}

	@Transient
	public Date getRevisionDate() {
		return new Date( timestamp );
	}

	public long getTimestamp() {
		return timestamp;
	}

	public void setTimestamp(long timestamp) {
		this.timestamp = timestamp;
	}

	@Override
	public boolean equals(Object o) {
		if ( this == o ) {
			return true;
		}
		if ( !(o instanceof DefaultRevisionEntity) ) {
			return false;
		}

		final DefaultRevisionEntity that = (DefaultRevisionEntity) o;
		return id == that.id
				&& timestamp == that.timestamp;
	}

	@Override
	public int hashCode() {
		int result;
		result = id;
		result = 31 * result + (int) (timestamp ^ (timestamp >>> 32));
		return result;
	}

	@Override
	public String toString() {
		return "DefaultRevisionEntity(id = " + id
				+ ", revisionDate = " + DateFormat.getDateTimeInstance().format( getRevisionDate() ) + ")";
	}
}