friend.java

来自「hibernate方便的操作数据库相当不错的 请各位下载看看啊」· Java 代码 · 共 61 行

//$Id: Friend.java,v 1.4 2004/12/08 20:05:14 epbernard Exp $
package org.hibernate.test.metadata.manytomany;

import java.util.Collection;
import java.util.Set;
import java.io.Serializable;

import javax.ejb.Entity;
import javax.ejb.Id;
import javax.ejb.GeneratorType;
import javax.ejb.ManyToMany;
import javax.ejb.AssociationTable;
import javax.ejb.CascadeType;
import javax.ejb.Table;
import javax.ejb.JoinColumn;


/**
 * Friend has other friends in a many to many way
 * @author Emmanuel Bernard
 */
@Entity()
public class Friend implements Serializable {
	private Integer id;
	private String name;
	private Set<Friend> friends;
	
	@Id(generate = GeneratorType.AUTO)
	public Integer getId() {
		return id;
	}

	public String getName() {
		return name;
	}

	public void setId(Integer integer) {
		id = integer;
	}

	public void setName(String string) {
		name = string;
	}
	
	@ManyToMany(
		cascade={CascadeType.CREATE, CascadeType.MERGE}
	)
	@AssociationTable(
		table=@Table(name="FRIEND2FRIEND"),
		joinColumns={@JoinColumn(name="FROM_FR")},
		inverseJoinColumns={@JoinColumn(name="TO_FR")}
	)
	public Set<Friend> getFriends() {
		return friends;
	}
	
	public void setFriends(Set<Friend> friend) {
		this.friends = friend;
	}
}