student.java

Hibernate开发及整合应用大全 蔡雪焘编著 本书用典型的示例剖析Hibernate开发中的重点和难点

package model;

import java.io.Serializable;

import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;

//复合主键类的对应类必须实现Serializable接口
public class Student implements Serializable {
    private String id;		 	//标识id
    private String cardId;	 	//学号
    private String name; 		//学生姓名
    private int age; 			//岁数

    /**
     * @param name
     * @param age
     */
    public Student(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public int getAge() {
        return age;
    }

    public String getName() {
        return name;
    }

    public String getCardId() {
        return cardId;
    }

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

    public void setAge(int age) {
        this.age = age;
    }

    public void setName(String stuName) {
        this.name = stuName;
    }

    public void setCardId(String cardId) {
        this.cardId = cardId;
    }

    public String getId() {
        return id;
    }

    public Student() { //无参的构造函数
    }

    //  必须重新定义equals()与hashCode()
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof Student)) {
            return false;
        }
        Student stu = (Student) obj;
        return new EqualsBuilder()
			        .append(this.name, stu.getName())
			        .append(this.cardId, stu.getCardId())
			        .isEquals();
    }

    public int hashCode() {
        return new HashCodeBuilder()
			        .append(this.name)
			        .append(this.cardId)
	                .toHashCode();
    }
}