<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE hibernate-configuration PUBLIC

        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"

        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

    <session-factory>

        <!-- Database connection settings -->

        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>

        <property name="connection.url">jdbc:mysql://127.0.0.1/testdb</property>

        <property name="connection.username">root</property>

        <property name="connection.password"></property>

        <!-- JDBC connection pool (use the built-in) -->

        <property name="connection.pool_size">1</property>

        <!-- SQL dialect -->

        <property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>

        <!-- Enable Hibernate's automatic session context management -->

        <property name="current_session_context_class">thread</property>

        <!-- Disable the second-level cache  -->

        <property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>

        <!-- Echo all executed SQL to stdout -->

        <property name="show_sql">true</property>

        <!-- Drop and re-create the database schema on startup -->

        <property name="hbm2ddl.auto">update</property>

        <mapping resource="com/my/hbm/Employer.hbm.xml"/>

        <mapping resource="com/my/hbm/Address.hbm.xml"/>

        <mapping resource="com/my/hbm/Detial.hbm.xml"/>

    </session-factory>

</hibernate-configuration>

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping>

    <class name="com.my.bean.Employer" table="employer">

        <id name="id" type="long">

            <column name="id"></column>

            <generator class="native"></generator>

        </id>

        <property name="companyName" type="java.lang.String" length="100" column="company_name" not-null="true" />

        <property name="createTime" type="java.util.Date">

            <column name="create_time" not-null="true"/>

        </property>

        <one-to-one name="address"></one-to-one>

        <one-to-one name="detial" property-ref="employer"></one-to-one>

    </class>

</hibernate-mapping>

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping>

    <class name="com.my.bean.Address" table="address">

        <id name="id" type="long" column="id">

            <generator class="foreign">

                <param name="property">employer</param>

            </generator>

        </id>

        <property name="location" column="location" length="200" not-null="true" type="java.lang.String"></property>

        <one-to-one name="employer" constrained="true"></one-to-one>

    </class>

</hibernate-mapping>

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping>

    <class name="com.my.bean.Detial" table="detial">

        <id name="id" type="long" column="id">

            <generator class="native"></generator>

        </id>

        <many-to-one name="employer" column="employer_id" unique="true"></many-to-one>

        <property name="info" column="info" type="java.lang.String" length="3000"></property>

    </class>

</hibernate-mapping>

package com.my.bean;

import java.util.Date;

public class Employer {

    private long id;

    private String companyName;

    private Date createTime;

    private Address address;

    private Detial detial;

    public long getId() {

        return id;

    }

    public void setId(long id) {

        this.id = id;

    }

    public String getCompanyName() {

        return companyName;

    }

    public void setCompanyName(String companyName) {

        this.companyName = companyName;

    }

    public Date getCreateTime() {

        return createTime;

    }

    public void setCreateTime(Date createTime) {

        this.createTime = createTime;

    }

    public Address getAddress() {

        return address;

    }

    public void setAddress(Address address) {

        this.address = address;

    }

    public Detial getDetial() {

        return detial;

    }

    public void setDetial(Detial detial) {

        this.detial = detial;

    }

}

package com.my.bean;

public class Address {

    private long id;

    private String location;

    private Employer employer;

    public long getId() {

        return id;

    }

    public void setId(long id) {

        this.id = id;

    }

    public String getLocation() {

        return location;

    }

    public void setLocation(String location) {

        this.location = location;

    }

    public Employer getEmployer() {

        return employer;

    }

    public void setEmployer(Employer employer) {

        this.employer = employer;

    }

}

package com.my.bean;

public class Detial {

    private long id;

    private String info;

    private Employer employer;

    public long getId() {

        return id;

    }

    public void setId(long id) {

        this.id = id;

    }

    public String getInfo() {

        return info;

    }

    public void setInfo(String info) {

        this.info = info;

    }

    public Employer getEmployer() {

        return employer;

    }

    public void setEmployer(Employer employer) {

        this.employer = employer;

    }

}

package com.my.init;

import java.util.Date;

import java.util.HashSet;

import java.util.List;

import java.util.Set;

import javax.xml.soap.Detail;

import org.hibernate.Query;

import org.hibernate.Session;

import org.hibernate.Transaction;

import com.my.bean.Address;

import com.my.bean.Detial;

import com.my.bean.Employer;

import com.my.bean.User;

import com.my.bean.UserAccount;

import com.my.dao.util.HibernateUtil;

public class Test {

    @SuppressWarnings("unchecked")

    public static void main(String[] args) {

        Session session = HibernateUtil.getSessionFactory().openSession();

        Transaction tx = session.beginTransaction();

        // new employer

        Employer employer = new Employer();

        employer.setCompanyName("my company");

        employer.setCreateTime(new Date());

        // new address

        Address address = new Address();

        address.setLocation("china");

        // new detail

        Detial detail = new Detial();

        detail.setInfo("info");

        // add relation

        employer.setAddress(address);

        employer.setDetial(detail);

        address.setEmployer(employer);

        detail.setEmployer(employer);

        session.save(employer);

        session.save(address);

        session.save(detail);

        // Get employer

        String hsqlSelect = "from Employer";

        Query query = session.createQuery(hsqlSelect);

        List<Employer> es = query.list();

        if(es != null && es.size() > 0){

            Employer e = es.get(0);

            System.out.println(e.getCompanyName());

            System.out.println(e.getDetial().getInfo());

        }

        tx.commit();

        session.close();

    }

}

<generator class="native"></generator>

<one-to-one name="address"></one-to-one>

<one-to-one name="detial" property-ref="employer"></one-to-one>

<id name="id" type="long" column="id">

    <generator class="foreign">

        <param name="property">employer</param>

    </generator>

</id>

<one-to-one name="employer" constrained="true"></one-to-one>

<many-to-one name="employer" column="employer_id" unique="true"></many-to-one>