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hibernate關系映射(一對一)

Posted on 2008-08-21 12:13 H2O 閱讀(350) 評論(0) 編輯收藏所屬分類: hibernate

人與卡(身份證)---一對一

package com.yz.pojos;

public class Person {
    private Integer pid;
    private String pname;
    private Integer page;
    //一個人對應一張卡
    private Card cards =new Card();

    public Person() {
    }
    public Person(Integer pid, String pname, Integer page, Card cards) {
        super();
        this.pid = pid;
        this.pname = pname;
        this.page = page;
        this.cards = cards;
    }
    public Integer getPid() {
        return pid;
    }
    public void setPid(Integer pid) {
        this.pid = pid;
    }
    public String getPname() {
        return pname;
    }
    public void setPname(String pname) {
        this.pname = pname;
    }
    public Integer getPage() {
        return page;
    }
    public void setPage(Integer page) {
        this.page = page;
    }
    public Card getCards() {
        return cards;
    }
    public void setCards(Card cards) {
        this.cards = cards;
    }
}

<?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="com.yz.pojos.Person" table="person" catalog="ssh">
        <id name="pid" type="java.lang.Integer">
            <column name="pid" />
            <generator class="native" />
        </id>
        <property name="pname" type="java.lang.String">
            <column name="pname" length="32" not-null="true" />
        </property>
        <property name="page" type="java.lang.Integer">
            <column name="page" not-null="true" />
        </property>
        
       <one-to-one   cascade="delete" name="cards" class="com.yz.pojos.Card" property-ref="person"></one-to-one>
    </class>
</hibernate-mapping>

package com.yz.pojos;

import javax.xml.registry.infomodel.PersonName;

/** *//**
* Card entity.
*
* @author MyEclipse Persistence Tools
*/

public class Card implements java.io.Serializable {

    // Fields

    private Integer cid;
    //一張卡對應一個人
    private Person person;
    private String cname;

    // Constructors

    /** *//** default constructor */
    public Card() {
    }

    /** *//** full constructor */
    public Card(Person person, String cname) {
        this.person = person;
        this.cname = cname;
    }

    // Property accessors

    public Integer getCid() {
        return this.cid;
    }

    public void setCid(Integer cid) {
        this.cid = cid;
    }

    public Person getPerson() {
        return this.person;
    }

    public void setPerson(Person person) {
        this.person = person;
    }

    public String getCname() {
        return this.cname;
    }

    public void setCname(String cname) {
        this.cname = cname;
    }

}

<?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="com.yz.pojos.Card" table="card" catalog="ssh">
        <id name="cid" type="java.lang.Integer">
            <column name="cid" />
            <generator class="native" />
        </id>
        <many-to-one name="person" class="com.yz.pojos.Person" fetch="select">
            <column name="pid"  />
        </many-to-one>
        <property name="cname" type="java.lang.String">
            <column name="cname" length="32"  />
        </property>
    </class>
</hibernate-mapping>

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