Introduction
Like other DI container frameworks, components are defined in external XML files. There is, also, a strong support for database and unit testing with JUnit.
The main difference with other frameworks is the support of the concept "Convention over Configuration" to reduce the XML configuration prominent when using framework such as Spring. The aim is to reduce the number or eliminate configuration files by making developers conform to programming and configuration conventions and letting the framework do the work. For example, if a property type is an interface and there is an object that implements this interface, dependency is configured by the container. If the test method name ends with a "Tx", a transaction is initiated before the unit test and rolledback after the test.
Modules
Seasar2 support of other open source software are prefixed with S2. Like most open source software, Seasar2 software may be divided into 3 major categories:
- Seasar2 core
- Related software
- Sandbox software - software still under development
Related software may further be subdivided into the following subdivision:
- Database related: S2DAO, S2Hibernate, S2Unit(JUnit)
- Presentation: S2JSF, S2Struts, S2Tapestry, Flash player
- Communication related: S2RMI, S2Axis
- Miscellaneous: Kijimuna
Seasar2 Core
Seasar2 core is the central software common to all Seasar2 related software. Transaction control module (S2Tx), database connection pooling (S2DBCP), and JUnit testing (S2Unit) are all bundled with this core.
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Unit testing, a.k.a. component or module testing, is a form of software testing by which isolated source code is tested to validate expected behavior.
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The Yahoo! User Interface Library (YUI) is a discontinued open-source JavaScript library for building richly interactive web applications using techniques such as Ajax, DHTML, and DOM scripting. YUI includes several cores CSS resources. It is available under a BSD License. Development on YUI began in 2005 and Yahoo! properties such as My Yahoo! and the Yahoo! front page began using YUI in the summer of that year. YUI was released for public use in February 2006. It was actively developed by a core team of Yahoo! engineers.
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Play Framework is an open-source web application framework which follows the model–view–controller (MVC) architectural pattern. It is written in Scala and usable from other programming languages that are compiled to JVM bytecode, e.g. Java. It aims to optimize developer productivity by using convention over configuration, hot code reloading and display of errors in the browser.
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