Ideas are concepts, techniques, procedures or thoughts that we’re working on but are not yet fully “fleshed out” or “ready for prime time”. Take them with a grain of salt. They are intended to generate lots of reader discussion. Once an Idea is fully realized, it could reappear on this site in the form of a How-To or Tip. Aliases: Research, Theories.
In this article, I present a simple example of how you can apply the Decorator Pattern to a
DataGridView to extend its behavior without using inheritance. This article is not meant to be a tutorial on the Decorator Pattern. Rather, it is just a brief explanation of how I solved a particular design problem using a variation of the Decorator Pattern. With a bit of thought, the reader should be able to apply my design pattern to decorate other types of visual controls and components from the .NET Framework such as
…Continue reading » Applying the Decorator Pattern to a DataGridView
In my software development job, I do a lot of persistence layer implementation, especially using the Hibernate O/R mapper. I work closely with a clever domain layer programmer who tends to use a lot of design patterns, perhaps because he likes the woman of the cover of Head First Design Patterns.
Sometimes, these design patterns create a bit of a challenge for me in the persistence layer, especially since I always tell my domain layer programmer that I can persist things transparently, without having to muck up his code with persistence layer artifacts.
A case in point is the State pattern. I have now persisted 5 different sets of states so it’s no longer a challenge. However, it took me a little while to figure how to do it. Naturally, I started by checking out Hibernate’s forums but much to my chagrin, I found several people asking the same question but no one offering an answer. Therefore, I will provide an answer in this blog post. …Continue reading » State Pattern Persistence with Hibernate