JPA 单表一对多，多对一关系配置【代码记录】

/**
 * Title: Common.java
 * Description: jpa cn.sean.domain.Common 
 * Copyright: Copyright (C)2013 田尘殇.中国
 * Company: 田尘殇 Sean
 */
 package cn.sean.domain;

import java.util.ArrayList;
import java.util.List;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
 
/**
 * Description:通用实体
 * @author 田尘殇 Sean Snow (sean.snow@live.com)
 * Time:2013-11-18下午3:40:40
 */
 @Entity
public class Common implements java.io.Serializable{

	/*——————Fields——————*/
	private static final long serialVersionUID = 1L;
	
	@Id
	@GeneratedValue(strategy=GenerationType.AUTO)
	private Long id;
	@Column(nullable=false)
	private String typeValue;	//类型值
	private String describeValue;	//描述
	private String reserveValue;		//备用字段
	
	@ManyToOne(fetch=FetchType.LAZY,cascade=CascadeType.ALL)
	private Common parentNode;		//父节点
	@OneToMany(fetch=FetchType.LAZY,cascade=CascadeType.ALL,mappedBy="parentNode",targetEntity=Common.class)
	private List<Common> subNode = new ArrayList<Common>();	//子节点
	/*——————Constructors——————*/
	/*——————Methods——————*/
	/*——————Methods Override——————*/
	/*——————Getter and Setter——————*/
	//getter setter ....

	
}