http://www.memestorm.com/blog Exploring the Spring Framework and Application Development Thu, 22 Nov 2007 19:49:28 +0000 http://backend.userland.com/rss092 en When I wrote about the Java Persistence API (JPA), Spring and Eclipse Web Tools Platform (WTP) I neglected to show how easy it was to test our JPA entities. Traditionally, testing EJBs outside of a container was an absolute pain. Testing JPA is embarrassingly easy, especially with Spring doing all ... http://www.memestorm.com/blog/testing-java-persistence-api-jpa-entities-outside-the-container/ It’s time to add some persistence to our talks. I spent a good two hours trying to get Spring, JPA and Eclipse to play along. Here’s what I eventually did…So our goal is to create a project that I can run from within Eclipse, or deploy to something ... http://www.memestorm.com/blog/java-persistence-api-jpa-spring-and-eclipse-web-tools-platform-wtp/ Spring 2.0 introduces a new way of scoping beans. We've spoken about singleton scoped beans in the past and there are factory beans too. Now there are session, request and other types of bean scopes. As you might imagine, a Spring bean scoped to the sessions means ... http://www.memestorm.com/blog/session-scoped-beans-in-spring-20/ Spring 2.0 introduces a new way of instantiating beans defined in a bean factory—lazily. Generally all singleton beans are instantiated as one of the last things that a bean factory does. You can now change this behaviour slightly and ensure that a bean factory doesn't instantiate your bean at all - until such ... http://www.memestorm.com/blog/lazy-bean-instantiation-in-spring-20/ I hadn't intended to expose any of our functionality with Web services so soon, but that's the great thing about Spring—many of the services are orthogonal to each other. Let's look at how we can expose some Spring beans as Web services. We'll do it using JSR 181 ... http://www.memestorm.com/blog/basic-spring-web-services-with-xfire-and-jsr-181/ The single most important feature in Spring 2.0 (IMO) is a new XML configuration convenience feature. I believe this is going to revolutionize the way people develop for Spring and bootstrap a modest component market too. This is a lot more than a convenience features - it's a fledgling component model too. In ... http://www.memestorm.com/blog/spring-components-xml-configuration-on-steroids/ Convention Over Configuration (CoC) is a term often bandied around by Ruby on Rails followers. From the wikipedia it's defined as "the programmer only needs to specifically configure what is unconventional." Very sensible advice indeed, although it's not without its problems. We've already seen one example of CoC in Spring: the ... http://www.memestorm.com/blog/convention-over-configuration-in-springs-mvc/ You want to slurp in some data, perhaps from a simple form or from request parameters. To do this, we'll explore the AbstractCommandController and learn about the related issues of binding and validation. Spring makes this kind of thing pretty effortless, and this will serve as the foundation of ... http://www.memestorm.com/blog/spring-binding-and-validation-introduction/ You want to load resources from the file system or classpath from within beans initialized by a Spring context. Background Our HSQLDB utility class needs to load the SQL to create the database every time our application starts, as outlined in a Embedded Database Starting Up With Web Context. How does this ... http://www.memestorm.com/blog/loading-resources-from-files-or-the-classpath/ You want to run an initialize or destroy method on a bean after the context creates it. These lifecycle methods allow you to grab and release resources. How to do it Well, we did this in the previous blog entry, making use of an ApplicationListener and InitializingBean. This was overkill! ... http://www.memestorm.com/blog/use-springs-bean-lifecycle-callback-methods-to-control-your-destiny/