A post on Javalobby (Are Serverside Web Frameworks Becoming Irrelevant?) got me thinking again about javascript based web apps also called SOFEA or SOUI applications. While I don’t believe that the end is near for server side frameworks, (after all a similar post was written 3 years ago), I think it there is a growing interest in these development models.

Now and again I take a look at javascript based client side web development interacting with web services since the notion of a thick, rich client using distributed stateless reusable web services that can just be deployed off into the cloud can be very alluring.
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Using composition over inheritance is a common design pattern that is often discussed in terms of designing business logic components. However, composition can solve a number of problems in domain object modeling that are created by relying on inheritance to share interface or functionality. Composition is used to delegate implementation in logical units by enlisting the help of a reference to an object that implements the required functionality instead of inheriting from it. This reference can be changed to different implementations depending on the needs at the time making for a more flexible design. This same design can be used in domain modeling to overcome some of the problems caused by inheritance. The typical flawed example of using inheritance in object modeling is the Person class which is often subclassed into Employee, User , Customer and Vendor classes.
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Last time we looked more in depth at CDI and how we can define beans and inject them into other beans. This time we are going to look at how we can use events to decouple the handling of actions in the system.
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I’m looking at starting a new project and once again find myself choosing between frameworks. Having spent some time evaluating different ones I wrote up some notes to share and get some feedback that might alter my thoughts or opinions. Here’s the criteria I’m using to choose a framework in no particular order.
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Create glass effect buttons using nothing but Java code and JTexGen, a procedural texture library for Java. First create a new project in your favorite IDE and add the JTextGen jar file, or create a new maven project and add the JTexgen dependency if you installed it from the source distribution into your local repository.
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This is the third of a four part series comparing Seam vs Spring Web Flow (SWF),and looks at the Seam implementation of the sample application.

(Updated 1/19/2009 : Changed links to point to the whole set of articles)
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This is the second of a four part series comparing Seam and Spring Web Flow (SWF),and looks at the Spring implementation of the sample application that we discussed in part 1. In a day or so I will have the piece that looks at writing the application using Seam.

(Updated 1/19/2009 : Changed links to point to the whole set of articles)
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This is the first of a four part series comparing Seam and Spring Web Flow (SWF) from different aspects, primarily with respect to building web based CRUD applications. It includes writing a simple but fairly complete application using both frameworks and then comparing the differences between the Seam and the SWF implementation.

This first part starts by taking a look at the two frameworks, where they come from and briefly, how they are used.

(Updated 1/19/2009 : Changed links to point to the whole set of articles)
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