oneToMany,ManyToOne双向关联

package com.xuguang.ext.xgerp.comm.workshop.bean;

import java.io.Serializable;
import java.util.List;

import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.OrderBy;
import javax.persistence.Table;
import javax.persistence.FetchType;

import org.hibernate.annotations.NotFound;
import org.hibernate.annotations.NotFoundAction;

/**
 * 工作点
 * @author ztw
 *
 */
@Entity
@Table(name="comm_workshop")
public class WorkShop implements Serializable {
	
	/**
	 * 
	 */
	private static final long serialVersionUID = -7502127838260795796L;
	/**
	 * 关键字
	 */
	private String workshopPK;
	/**
	 * 编号
	 */
	private String workshopNo;
	/**
	 * 名称
	 */
	private String workshopName;
	/**
	 * 类型
	 */
	private String workshopType;
	/**
	 * 父
	 */
	private WorkShop father;	
	/**
	 * 子
	 */
	private List<WorkShop> sons;
	@Id
	public String getWorkshopPK() {
		return workshopPK;
	}
	public void setWorkshopPK(String workshopPK) {
		this.workshopPK = workshopPK;
	}
	public String getWorkshopNo() {
		return workshopNo;
	}
	public void setWorkshopNo(String workshopNo) {
		this.workshopNo = workshopNo;
	}
	public String getWorkshopName() {
		return workshopName;
	}
	public void setWorkshopName(String workshopName) {
		this.workshopName = workshopName;
	}
	public String getWorkshopType() {
		return workshopType;
	}
	public void setWorkshopType(String workshopType) {
		this.workshopType = workshopType;
	}
	
	@ManyToOne(targetEntity=WorkShop.class)
	@JoinColumn(name="fatherPK")
	@NotFound(action=NotFoundAction.IGNORE)
	public WorkShop getFather() {
		return father;
	}
	public void setFather(WorkShop father) {
		this.father = father;
	}
	
	@OneToMany(mappedBy="father",fetch=FetchType.EAGER)
	@OrderBy("workshopName")
	public List<WorkShop> getSons() {
		return sons;
	}
	public void setSons(List<WorkShop> sons) {
		this.sons = sons;
	}
}