Hibernate example source code file (MembershipWithCompositeId.java)

This example Hibernate source code file (MembershipWithCompositeId.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Hibernate tags/keywords

id, id, io, long, long, membership, membershipwithcompositeid, membershipwithcompositeid, serializable, serializable

The Hibernate MembershipWithCompositeId.java source code

/*
 * 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.test.manytomanyassociationclass.compositeid;
import java.io.Serializable;
import org.hibernate.test.manytomanyassociationclass.Group;
import org.hibernate.test.manytomanyassociationclass.Membership;
import org.hibernate.test.manytomanyassociationclass.User;

/**
 * Models a user's membership in a group.
 *
 * @author Gail Badner
 */
public class MembershipWithCompositeId extends Membership {

	public static class Id implements Serializable {
		private Long userId;
		private Long groupId;

		public Id() {
		}

		public Id(Long userId, Long groupId) {
			this.userId = userId;
			this.groupId = groupId;
		}

		public Long getUserId() {
			return userId;
		}

		public void setUserId(Long userId) {
			this.userId = userId;
		}

		public Long getGroupId() {
			return groupId;
		}

		public void setGroupId(Long groupId) {
			this.groupId = groupId;
		}

		public boolean equals(Object o) {
			if ( o != null && o instanceof Id ) {
				Id that = ( Id ) o;
				return this.userId.equals( that.userId ) &&
						this.groupId.equals( that.groupId );
			}
			else {
				return false;
			}
		}

		public int hashCode() {
			return userId.hashCode() + groupId.hashCode();
		}
	}

	public MembershipWithCompositeId() {
		super( new Id() );
	}

	public MembershipWithCompositeId(String name) {
		super( new Id(), name );
	}

	public void setGroup(Group group) {
		( (Id) getId() ).setGroupId( ( group == null ? null : group.getId() ) );
		super.setGroup( group );
	}

	public void setUser(User user) {
		( (Id) getId() ).setUserId( user == null ? null : user.getId() );
		super.setUser( user );
	}
}