As data usage is increasing day by day in all domain applications, the usage and complexity of Database increases exponentially. It is important to have a framework which handles all the life cycle, connections, sessions and transactions of database, henceforth leaving only the business logic for the developers to work with. This is where Hibernate comes in and helps the professionals to concentrate only on business logic instead of database environments. Spring Framework combines all the industry standard framework approaches (e.g. Struts and Hibernate) into one bundle. Spring provides Dependency Injection, Aspect Oriented Programming and support for unit testing. This gives the developer time to work on main business logic rather than worrying about non-application code.

1. www.edureka.co/persistence-with-hibernate
Leverage Hibernate and Spring Features Together
View Persistence with Hibernate course details at www.edureka.co/persistence-with-hibernate
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At the end of this webinar, you will be able to understand:
Objectives
 What are Hibernate & Spring Frameworks
 Advantages of Using Spring and Hibernate Together
 Connection Between Hibernate and Spring Frameworks
 Spring Transaction Management Using Hibernate
 Demo

3. Slide 3 www.edureka.co/persistence-with-hibernate
An Object relational mapping library of java language for Object persistence
and SQL databases
Found in 2001 by Gavin King
Transparent persistence of java objects with relational database
Provides query language in synch with SQL
Open source library
Provides solutions for object relational impedance mismatch problems
Hibernate

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Provides a simple API for storing and retrieving Java objects directly to and from the database
Non-intrusive: No need to follow specific rules or design patterns
Transparent: Your object model is unaware
Persistence using Hibernate
JavaObject
int id;
String name;
String getName()
int getId()
void setName(String)
SQL Table
id [int] primary key,
name [varchar(50)],
Magic Happens Here
(O/R Mapper – i.e. Hibernate)

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Spring
An open source framework
Enables to build applications using POJO (Plain Old Java Objects)
Handles the complete infrastructure required for application from end to
end
Makes development of JavaEE (Java EnterPrise Applications) easier
Light weight and transparent
Use of IOC Containers
Supports ORM and Transaction Management

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Spring with Hibernate
An extensive support for ORM frameworks like
Hibernate , JPA
Provides complete infrastructure for any ORM layer used
in the application
 IOC of spring handles the SessionFactory instances of
hibernate
Configurations of hibernate are taken care efficiently by
spring application contexts
Use of hibernate.cfg.xml can be taken care by spring
applicationContext.xml
Declarative Transaction management
Built in support for exception handling

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Spring supports two different approach for transaction management:
Programmatic Transaction Management
» Transactions are managed by programming codes
» Highly flexible
» Difficult in maintenance
» Spring TransactionTemplate is used for programmatic approach
Declarative Transaction Management
» Transactions are handled declaratively by XML or Annotation
» Will have lesser impact with the code of application
» Extensive support from Spring AOP
» Most widely used
Transaction Management with Spring

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Spring Aspect Oriented Programming enables to declare transaction
declaratively with Aspect
Aspect scatters across methods, class and even objects
Can be used in xml and annotations
AOP declarative transaction:-
» Transaction-handling advice is created using <tx:advice/> and
pointcut is defined to make transactional advice that matches all
methods
» Advice begins transaction on before calling the method
» On successful execution of method advice commits the
transaction
» On failure advice rolls back
Spring AOP Transaction Management
<tx:advice id="txAdvice"
transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="create"/>
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut id="createOperation"
expression="execution(*
com.tutorialspoint.StudentJDBCTemplate.create
(..))"/>
<aop:advisor advice-ref="txAdvice" pointcut-
ref="createOperation"/>
</aop:config>

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DEMO : Spring Transaction Management Using Hibernate

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Course class
Spring and Hibernate Example

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CourseDAO class
Spring and Hibernate Example (Contd.)

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This is the mapping file which will take care of mapping between your Courses table and Course class
course.hbm.xml
Spring and Hibernate Example (Contd.)

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applicationContext.xml (contd.)
Spring and Hibernate Example (Contd.)

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In the applicationContext.xml file we are declaring lots of bean definition
One is for DataSource definition, one is for Hibernate Session Factory with the mapping resource course.hbm.xml
Then we are creating HibernateTemplate bean setting its sessionFactory property to mysessionfactory
Last is the bean definition of CourseDAO class setting its template property to HibernateTemplate bean
Spring and Hibernate Example (Contd.)

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When you run the TestClass, you will see one row in courses table
Spring and Hibernate Example (Contd.)

16. Questions
Slide 16 www.edureka.co/persistence-with-hibernate

17. Slide 17 Course Url