一對一映射：
兩中方式：
第一種：主鍵--------主鍵（外鍵）
第二種 : 主鍵-------普通字段（外鍵）
Person
package Entitys;
public class Person {
private Integer id;
private String name;
private IdCard idCard;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public IdCard getIdCard() {
return idCard;
}
public void setIdCard(IdCard idCard) {
this.idCard = idCard;
}
}
Person映射文件
<?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 package="Entitys">
<class name="Person">
<id name="id">
<generator class="native"/>
</id>
<property name="name"/>
<!-- 第一種方法 -->
<!-- <one-to-one name="idCard"/> -->
<!-- 第二種方法 -->
<one-to-one name="idCard" property-ref="person"/>
</class>
</hibernate-mapping>
IdCard
package Entitys;
public class IdCard {
private Integer id;
private String name;
private Person person;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Person getPerson() {
return person;
}
public void setPerson(Person person) {
this.person = person;
}
}
IdCard 映射文件
<?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 package="Entitys">
<class name="IdCard" table="id_card">
<id name="id">
<!-- 第一種方法 -->
<!--<generator class="foreign">
<param name="property">person</param>
</generator>
-->
<!-- 第二種方法 -->
<generator class="native"/>
</id>
<property name="name"/>
<!-- 第一種方法 -->
<!--<one-to-one name="person"/> -->
<!-- 第二種方法 -->
<many-to-one name="person" column="peron_id" unique="true"/>
</class>
</hibernate-mapping>