node.java

hibernate方便的操作数据库相当不错的 请各位下载看看啊

//$Id: Node.java,v 1.1 2004/12/11 15:09:54 epbernard Exp $
package org.hibernate.test.metadata.manytoone;

import javax.ejb.Entity;
import javax.ejb.Id;
import javax.ejb.ManyToOne;
import javax.ejb.CascadeType;
import javax.ejb.FetchType;
import javax.ejb.JoinColumns;
import javax.ejb.JoinColumn;
import java.io.Serializable;

/**
 * @author Emmanuel Bernard
 */
@Entity
public class Node implements Serializable {
	
	private NodePk id;
	private String description;
	private Node parent;

	public boolean equals(Object o) {
		if (this == o) return true;
		if (!(o instanceof Node)) return false;

		final Node node = (Node) o;

		if (!id.equals(node.id)) return false;

		return true;
	}

	public int hashCode() {
		return id.hashCode();
	}

	@Id
	public NodePk getId() {
		return id;
	}

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

	public String getDescription() {
		return description;
	}

	public void setDescription(String description) {
		this.description = description;
	}

	@ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
	@JoinColumns({
			@JoinColumn(name="parentName"),
			@JoinColumn(name="parentLevel")
			})
	public Node getParent() {
		return parent;
	}

	public void setParent(Node parent) {
		this.parent = parent;
	}

}