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Thursday, 18 October 2012

Hibernate one-to-one xml mapping




Ex6:

//Hibernate one-to-one xml mapping



     JAVA-SERVLETS     JAVA-JDBC     JAVA-JSP       HIBERNATE-SHCEMABASED 

    HIBERNATE-ANNOTATIONS     SPRING-IOC       SPRING –AOP-SCHEMABASED   

    SPRING-AOP-ANNOTATIONS      SPRING -DAO     SPRIN-MVC     SPRING-SECUTITY

     SPRING-DATA-JPA     REST-WEB-SERVICE     STRUTS2HIBERNATE    GWT.... 





Employee.java



package madhav;


public class Employee {
     
      private int empno;
      private String ename;
       
      private PersonalDetails personalDetails;
      public PersonalDetails getPersonalDetails() {
            return personalDetails;
      }
      public void setPersonalDetails(PersonalDetails personalDetails) {
            this.personalDetails = personalDetails;
      }
      public int getEmpno() {
            return empno;
      }
      public void setEmpno(int empno) {
            this.empno = empno;
      }
      public String getEname() {
            return ename;
      }
      public void setEname(String ename) {
            this.ename = ename;
      }
}


PersonalDetails.java


package madhav;

public class PersonalDetails{
      private int empno;
      private String firstname;
      private String lastname;
      private Employee employee;
      public Employee getEmployee() {
            return employee;
      }
      public void setEmployee(Employee employee) {
            this.employee = employee;
      }
      public int getEmpno() {
            return empno;
      }
      public void setEmpno(int empno) {
            this.empno = empno;
      }
      public String getFirstname() {
            return firstname;
      }
      public void setFirstname(String firstname) {
            this.firstname = firstname;
      }
      public String getLastname() {
            return lastname;
      }
      public void setLastname(String lastname) {
            this.lastname = lastname;
      }
}


employee.bhm.xml



<?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="madhav">
  <class name="Employee" table="employee">
   <id name="empno" type="int">
   <column name="empno"></column>
   <generator class="increment"/>
  </id>

  <property name="ename">
   <column name="ename" />
   </property>

  <one-to-one name="personalDetails" class="PersonalDetails">
     
  </one-to-one>
 </class>
</hibernate-mapping>



personaldetails.hbm.xml

<?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="madhav">
  <class name="PersonalDetails" table="personaldetails">
   <id name="empno" type="int" column="empno" >
   <generator class="increment"/>
  </id>

  <property name="firstname">
   <column name="firstname" />
  </property>
  <property name="lastname">
  <column name="lastname"/>
  </property>
 
  <one-to-one name="employee" class="Employee">
  </one-to-one>
 </class>

 
</hibernate-mapping>





hibernate.cfg.xml

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<!-- Generated by MyEclipse Hibernate Tools.                   -->
<hibernate-configuration>

    <session-factory>
        <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="connection.url">jdbc:mysql://localhost:3306/mysql</property>
        <property name="connection.username">madhav</property>
        <property name="connection.password">madhav</property>
        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="show_sql">true</property>
    <mapping resource="employee.hbm.xml"/>
    <mapping resource="personaldetails.hbm.xml"/>
    </session-factory>

</hibernate-configuration>



TestCase.java


package madhav;
import org.hibernate.SessionFactory;
import org.hibernate.classic.Session;
import org.hibernate.cfg.*;
import org.hibernate.*;
import org.apache.log4j.*;
public class TestCase {
     SessionFactory factory;
     public void createEmp()
     {
      Session session=null;
      Transaction tx=null;
      try
      {        
                  session =factory.openSession();
                  
                 

tx=session.beginTransaction();
PersonalDetails pd=new PersonalDetails();
Employee e=new Employee();
pd.setFirstname("abc");
pd.setLastname("rao");
pd.setEmployee(e);
e.setEname("madhav");
e.setPersonalDetails(pd);
session.save(e);
               session.save(pd);        
                  tx.commit();
                  System.out.println("record inserted");       
      }
      catch(HibernateException e)
      {       
     e.printStackTrace();
                  
      }
     }
     public static void main(String[] args) {
                 // TODO Auto-generated method stub

      System.out.println("first");
                 TestCase t=new TestCase();
                 Configuration cfg=new Configuration();
                 cfg.configure();
                 System.out.println("break 2");
t.factory=cfg.buildSessionFactory();
t.createEmp();
System.out.println("execution over");
     }
}


Output-console:






                                       

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