Introduction to Hibernate Framework

www.collaborationtech.co.inBengaluru INDIA

Presentation By Ramananda M.S Rao

ContentContentIntroductionObject PersistenceHibernate ConfigurationPersistent ClassesAnnotationsPersistence Life CycleComponents and ModelMapping and AssociationEntity Inheritance with Hibernate Intermediate ConceptsHibernate Query and CriteriaFetching StrategiesHibernate objectsListenersProjectAbout Us

www.collaborationtech.co.in

Introduction Hibernate framework simplifies the development of java application to interact

with the database. Hibernate is an open source, lightweight, ORM (Object Relational Mapping) tool.

An ORM tool simplifies the data creation, data manipulation and data access. It is a programming technique that maps the object to the data stored in the database.

Advantages of Hibernate Framework Open source and Lightweight Fast performance Database Independent query: HQL (Hibernate Query Language) is the object-

oriented version of SQL. Automatic table creation: Hibernate framework provides the facility to create the

tables of the database automatically. So there is no need to create tables in the database manually.

Simplifies complex join: To fetch data form multiple tables is easy in hibernate framework.

Hibernate supports Query cache and provide statistics about query and database status.

www.collaborationtech.co.in

Hibernate Framework Architecture

www.collaborationtech.co.in

ExampleStudentEntity.java package entity;import javax.persistence.Column;import javax.persistence.Entity;import javax.persistence.Id;import javax.persistence.Table;@Entity@Table(name = "student")public class StudentEntity {@Id@Column(name = "ID") private int id; @Column(name = "NAME") private String name; @Column(name = "DEPARTMENT") private String department; @Column(name = "COLLEGE") private String college;public int getId() {return id;}

www.collaborationtech.co.in

Examplepublic void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getDepartment() {return department;}public void setDepartment(String department) {this.department = department;}public String getCollege() {return college;}public void setCollege(String college) {this.college = college;}}

www.collaborationtech.co.in

Examplepackage util;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.Transaction;import org.hibernate.boot.registry.StandardServiceRegistryBuilder;import org.hibernate.cfg.Configuration;import org.hibernate.service.ServiceRegistry;import entity.StudentEntity;public class HibernateUtil {public static void main(String[] args) {Configuration cf = new Configuration().configure("hibernate.cfg.xml"); StandardServiceRegistryBuilder srb = new StandardServiceRegistryBuilder(); srb.applySettings(cf.getProperties()); ServiceRegistry sr = srb.build(); SessionFactory sf = cf.buildSessionFactory(sr); Session session = sf.openSession();

www.collaborationtech.co.in

ExampleStudentEntity std = new StudentEntity(); std.setId(100); // Primary Key std.setName("Ravindra"); std.setDepartment("ECE"); std.setCollege("RNS Bangalore");

Transaction tx = session.beginTransaction(); session.save(std); tx.commit(); System.out.println("Object saved successfully.....!!"); session.close(); sf.close(); }}

www.collaborationtech.co.in

Examplehibernate.cfg<!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> <property name="hibernate.dialect"> org.hibernate.dialect.MySQLDialect </property> <property name="hibernate.connection.driver_class"> com.mysql.jdbc.Driver </property><!-- Assume students is the database name --> <property name="hibernate.connection.url"> jdbc:mysql://localhost/testdb </property> <property name="hibernate.connection.username"> testdb </property> <property name="hibernate.connection.password"> root </property><mapping class="entity.StudentEntity"/></session-factory></hibernate-configuration>

www.collaborationtech.co.in

Follow us on SocialFacebook: https://www.facebook.com/collaborationtechnologies/Twitter : https://twitter.com/collaboration09Google Plus : https://plus.google.com/100704494006819853579LinkedIn : https://www.linkedin.com/in/ramananda-rao-a2012545Instagram : https://instagram.com/collaborationtechnologiesYouTube : https://www.youtube.com/channel/UCm9nK56LRbWSqcYWbzs8CUgSkype : facebook:ramananda.rao.7WhatsApp : +91 9886272445

www.collaborationtech.co.in

THANK YOU

About Us