Hibernate Gossip: 複合主鍵（二）

package onlyfun.caterpillar;

import java.io.Serializable;

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

public class UserPK implements Serializable {
private String name;
private String phone;

public String getName() {
return name;
}

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

public String getPhone() {
return phone;
}

public void setPhone(String phone) {
this.phone = phone;
}

public boolean equals(Object obj) {
if(obj == this) {
return true;
}

if(!(obj instanceof User)) {
return false;
}

UserPK pk = (UserPK) obj;
return new EqualsBuilder()
.append(this.name, pk.getName())
.append(this.phone, pk.getPhone())
.isEquals();

}

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

package onlyfun.caterpillar;

import java.io.Serializable;

public class User implements Serializable {
private UserPK userPK; // 主鍵
private Integer age;

public User() {}

public UserPK getUserPK() {
return userPK;
}

public void setUserPK(UserPK userPK) {
this.userPK = userPK;
}

public Integer getAge() {
return age;
}

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

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping
PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>

<class name="onlyfun.caterpillar.User" table="user">
<composite-id name="userPK"
class="onlyfun.caterpillar.UserPK"
unsaved-value="any">
<key-property name="name"
column="name"
type="java.lang.String"/>
<key-property name="phone"
column="phone"
type="java.lang.String"/>
</composite-id>

<property name="age" column="age" type="java.lang.Integer"/>

</class>

</hibernate-mapping>