JPA的一个Annotation实例

package cn.neilone.model;

import java.util.Date;

import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.persistence.Transient;

@Entity
@Table(name="_Teacher")
public class Teacher {

	private int id;
	private String name;
	private String title;
	private String nouse;
	private Date birthDate;
	private ZhiCheng zhiCheng;
	
	@Id
	@GeneratedValue(strategy=GenerationType.AUTO)
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	@Basic
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	@Column(name="_title")
	public String getTitle() {
		return title;
	}
	public void setTitle(String title) {
		this.title = title;
	}
	@Transient
	public String getNouse() {
		//此字段不需要持久化
		return nouse;
	}
	public void setNouse(String nouse) {
		this.nouse = nouse;
	}
	/**
	 * 可以设置日期的精度
	 * @return
	 */
	@Temporal(TemporalType.TIME)
	public Date getBirthDate() {
		return birthDate;
	}
	public void setBirthDate(Date birthDate) {
		this.birthDate = birthDate;
	}
	
	//@Enumerated(EnumType.STRING)
	@Enumerated(EnumType.ORDINAL)
	public ZhiCheng getZhiCheng() {
		return zhiCheng;
	}
	public void setZhiCheng(ZhiCheng zhiCheng) {
		this.zhiCheng = zhiCheng;
	}
}