http://anirudhvyas.com/root A block of code can say more than a great book filled with 'anecdotes' and insights Mon, 09 Jun 2008 01:43:21 +0000 http://backend.userland.com/rss092 en Almost all of us have used some sort of a common Constants class which gets piled with huge number of constants, ranging from things like SOME_IMPORTANT_ID to something trivial like INTEGER_VALUE_1. Whatever may be the reason, but the grouping of these things goes right against separation of concerns (as everything ... http://anirudhvyas.com/root/2008/06/09/constants-maintainence-proposed-solution/ After a long haul in posts, I am back again. Thanks to all of you for you encouraging e-mails, much appreciated. The Generic DAO pattern became a de-facto of sorts in Hibernate / ORM world some time back. In keeping with my never ending quest for improving upon already existing ... http://anirudhvyas.com/root/2008/05/31/making-generic-dao-operation-specific/ A long haul in posts (at least by my standards) was basically due to combination of work schedule, "other things" (don't ask :) ). For past couple of weeks I have had my code reviewed by some people, which interestingly evoked emotional response in me to write this post. I ... http://anirudhvyas.com/root/2008/05/04/ever-controversial-and-sometimes-annoying-code-reviews/ Basics I have to go on a detour for bit (from elegant visitor to strategy pattern to DI ... ) to something that most of the Java people are familiar with; Data Transfer Object, or most commonly known as a DTO. The reasons for this detour are related to something ... http://anirudhvyas.com/root/2008/04/19/abuses-of-dto-pattern-in-java-world/ So in the last post i talked about how i could make it better with slight twist. Well for those of you who don't know what Dependency Injection is read : Dependency Injection By Fowler. Lets get started. To give you a little refresher, In my last post we discussed, ... http://anirudhvyas.com/root/2008/04/05/a-much-better-strategy-pattern-part-ii/ In words of Gang Of Four design patterns Book and from Wikipedia, definition of Strategy Pattern is as follows : Define a family of algorithms, encapsulate each one, and make them interchangeable. Strategy lets the algorithm vary independently from clients that use it.The strategy pattern is useful for situations where it ... http://anirudhvyas.com/root/2008/04/02/a-much-better-strategy-pattern/ Brief Background: Visitor pattern arose from the need to handle different 'kinds' of data in a collection differently by some class; for example a list could have Strings, other Lists etc. In such a scenario; you'd end up writing instanceof checks (ugly); This example of handling different kinds of data in ... http://anirudhvyas.com/root/2008/03/20/visitor-pattern-elegance-work/ Following are the notes / observations from video session (you can find video at google videos: Google Video of JSR I'll express my opinion about Annotations over the course of next few posts ( I don't like them personally; I will state my reasons later). Core topics in Software development boils down ... http://anirudhvyas.com/root/2008/03/20/jsr-305-movement-towards-software-defect-detection-within-the-code/ There has been a lot of confusion in Java Web world, as to what "will" work eventually with advent of so many Web Frameworks; each reinventing the wheel in some way or the other; trying to solve one problem ignoring others altogether. I have accumulated fair amount of experience working with ... http://anirudhvyas.com/root/2008/03/20/apache-wicket-the-greatest-java-web-framework-ever/ I was rummaging through Hibernate forums and I stumbled upon something interesting The goal of Autofetch is reduce the modularity penalty and programmer burden of specifying associations which should be loaded with an object query. These specifications are sometimes are called fetch profiles, prefetch directives, or joins. These ... http://anirudhvyas.com/root/2008/03/19/hello-world/