Managing Transactions


Database transactions help you group a set of operations into a single unit of work. All operations succeed, or fail, as a group. Spring’s powerful and flexible transaction support is another factor responsible for the framework’s success and popularity. Prior to Spring, complex or declarative transactional features typically required a JEE server. Using Aspect-Oriented-Programming (AOP) techniques, Spring helped democratize enterprise-level transactional support, allowing developers to cleanly apply transactional rules to their code whether they were using a full-fledged JEE application server, a lighter weight web container, or even a stand-alone unit test. The important detail is that the transactional rules could be consolidated into configuration so that code need not be muddied with these types of concerns. Switching between a JEE application server, using a Java Transaction API (JTA) datasource and a simple unit test, and a local datasource is just a matter of modifying the Spring configuration; no code needs to be altered. However, Spring can leverage some of the advanced features offered by JTA when employing a JTA transaction manager. The key benefit, however, is that Spring provides a transactional programming model that is consistent, whether you need to have transactions span multiple datasources (a feature offered by JTA) or across a single datasource, the way in which you define these transactional concerns will always be the same when using Spring.


Configuration File Business Logic Database Transaction Transaction Management Isolation Level 
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© Paul Tepper Fisher and Solomon Duskis 2009

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