entitylifecycle.java

jboss4 + Mysql +ejb3.0 EJB3 简单例子

/**
 * Copyright (c)上海烟草(集团)公司与上海康时信息系统有限公司。
 */
package com.myejb.entity;

import java.io.Serializable;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.EntityListeners;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.PrePersist;

import com.myejb.EntityListenerLogger;

/**
 * 
 * @author xywang
 * @since 2009-2-18
 * @version 1.0
 * 
 */
@SuppressWarnings("serial")
@Entity
@EntityListeners({EntityListenerLogger.class})
public class EntityLifecycle implements Serializable{
    private Integer id;
    private String  name;
    public EntityLifecycle(){
    }
    public EntityLifecycle(String name){
        this.name = name;
    }
    
    @Id @GeneratedValue
    public Integer getId(){
        return id;
    }
    public void setId(Integer id){
        this.id = id;
    }
    @Column(nullable=false,length=32)
    public String getName(){
        return name;
    }
    public void setName(String name){
        this.name = name;
    }
    /**
     * 如果实体既定义了外部监听器，又实现了内部回调方法这时会先执行外部监听器的回调方法，
     * 再执行实体内部的回调方法。
     */
    @PrePersist
    public void PreInsert(){
        System.out.println("实体内的回调方法@PrePersist事件发生");
    }
}