What is transaction management in Spring?

What is transaction management in Spring?

It enables application developers to use a consistent programming model in any environment. You write your code once, and it can benefit from different transaction management strategies in different environments. The Spring Framework provides both declarative and programmatic transaction management.

Does Spring support transaction management?

Spring supports two types of transaction management: Programmatic transaction management: This means that you have to manage the transaction with the help of programming. Declarative transaction management: This means you separate transaction management from the business code.

What does Spring declarative transaction management work with?

Unlike EJB CMT, which is tied to JTA, the Spring Framework’s declarative transaction management works in any environment. It can work with JDBC, JDO, Hibernate or other transactions under the covers, with configuration changes only.

Is it sufficient to annotate the classes with @transactional annotation?

It is not sufficient to tell you simply to annotate your classes with the @Transactional annotation, add the line ( ) to your configuration, and then expect you to understand how it all works.

What type of transaction management does Spring support?

Spring supports both programmatic and declarative transaction management.

How does Spring @transactional really work?

So when you annotate a method with @Transactional , Spring dynamically creates a proxy that implements the same interface(s) as the class you’re annotating. And when clients make calls into your object, the calls are intercepted and the behaviors injected via the proxy mechanism.

Which type is a declarative transaction management?

Declarative transaction management is the most common Spring implementation as it has the least impact on application code. The XML declarative approach configures the transaction attributes in a Spring bean configuration file.

When should you use @transactional?

@Transactional should be used on specific methods where it is actually needed, not on the entire class. This makes it easier to see which methods are meant to be executed as one transaction, and which ones are not. You don’t need @Transactional for database operations that only read from the database.

What is the purpose of @transactional annotation?

The @Transactional annotation makes use of the attributes rollbackFor or rollbackForClassName to rollback the transactions, and the attributes noRollbackFor or noRollbackForClassName to avoid rollback on listed exceptions. The default rollback behavior in the declarative approach will rollback on runtime exceptions.

How does @transactional work in Spring?

5.1. At a high level, Spring creates proxies for all the classes annotated with @Transactional, either on the class or on any of the methods. The proxy allows the framework to inject transactional logic before and after the running method, mainly for starting and committing the transaction.

How to use spring Orm with AOP transaction management?

First we tell spring that we want to use classpath scanning for Spring components (Services, DAOs, etc…) rather than unconviniently defining them one by one in this xml, and also we enable Spring annotation detection. Adding the datasource, that is currently hsqldb (in-memory database).

Why do we need transaction management in spring?

Transaction management is required to ensure the data integrity and consistency in database. Spring’s AOP technique is allow developers to manage the transaction declarative. Here’s an example to show how to manage the Hibernate transaction with Spring AOP.

How to manage Spring AOP transaction in hibernate?

Here’s an example to show how to manage the Hibernate transaction with Spring AOP. P.S Many Hibernate and Spring configuration files are hidden, only some important files are shown, if you want hand-on, download the full project at the end of the article. 1.

Can you use spring transactional annotations on Dao?

Once this is set up, you could use spring transactional annotations on your DAO methods as shown below. Spring would take care of starting transactions, committing your transactions or rolling back your transactions when exceptions are thrown.