Retrive Obect In Hibernate

Model Class

package com.learnjavabyanand;

import java.util.Date;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.persistence.Transient;

/**
 * @author ananddw
 *
 */
//@Entity will create table as per class name By if you specify name then table name must be the name what you will provide inside Entity
@Entity(name="employee_Details")
public class EmployeeDetails {

//we can put this annotation above getter as well
@Id
@Column(name="employee_name")
private String employeeName;

//ignore this variable and not create column for us
private String employeeNumber;

@Column(name="employee_location")
private String employeeLocation ;

//Used because to store Date not full time stamp
@Temporal(TemporalType.DATE)
private Date todayDate;

public String getEmployeeName() {
return employeeName;
}
public void setEmployeeName(String employeeName) {
this.employeeName = employeeName;
}
public String getEmployeeNumber() {
return employeeNumber;
}
public void setEmployeeNumber(String employeeNumber) {
this.employeeNumber = employeeNumber;
}
public String getEmployeeLocation() {
return employeeLocation;
}
public void setEmployeeLocation(String employeeLocation) {
this.employeeLocation = employeeLocation;
}
public Date getTodayDate() {
return todayDate;
}
public void setTodayDate(Date todayDate) {
this.todayDate = todayDate;
}



}

Client Class

package com.learnjavabyanand;

import java.util.Date;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.cfg.AnnotationConfiguration;

import org.hibernate.cfg.Configuration;

/**

 * 

 * @author ananddw

 *

 */

public class HibernateClient {

public static void main(String[] args) {

// TODO Auto-generated method stub

EmployeeDetails employee= new EmployeeDetails();

employee.setEmployeeName("Anand Dwivedi");

employee.setEmployeeNumber("MER-13");

employee.setEmployeeLocation("Bangalore");

employee.setTodayDate(new Date());

try{

//get the configuration  and create a session factory once in out application 

SessionFactory factory=new AnnotationConfiguration().configure().buildSessionFactory();

//create session from session factory to save/retrive or other operation 

Session session=factory.openSession();

//new transaction and save object inside trans

session.beginTransaction();

//save Object 

session.save(employee);

//commit the session 

session.getTransaction().commit();

session.close();

//Retriving All the Object 

employee=null;

session=factory.openSession();

session.beginTransaction();

employee=(EmployeeDetails)session.get(EmployeeDetails.class, "Anand Dwivedi");

System.out.println(employee.getEmployeeName());

}catch(Exception e){

e.printStackTrace();

}

}

}

hibernate Configuration 

<?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">

<hibernate-configuration>

  <session-factory>

  <!--  Postgres DB Details  -->

    <property name="hibernate.connection.driver_class">org.postgresql.Driver</property>

    <property name="hibernate.connection.url">jdbc:postgresql://127.0.0.1:5432/hibernate</property>

    <property name="hibernate.connection.username">postgres</property>

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

      <!--  Postgres DB Details End  -->

    

    <!-- Postgres Dialect has information of list of  queries avil in Postgres DB -->

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

    <!-- Postgres Dialect End -->

    

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

    

    <!--  Echo show Query  -->

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

     <!--  Echo show Query End  -->

    

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

    

    <!--  Create every time table and insert Data -->

    <property name="hibernate.hbm2ddl.auto">create</property>

    <!--  Create every time table and insert Data End -->

    

    <!--  Define Package for mapping class -->

    <mapping class="com.learnjavabyanand.EmployeeDetails"/>

    <!--  Define Package for mapping class End -->

   

  </session-factory>

</hibernate-configuration>

Snapshot : 

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