I came across an interesting javascript article the other day on how not to write javascript: Google Closure: How not to write JavaScript The interesting part of this article that caught my eye was using a map instead of a switch or if/else statement to check for string comparisons. This got me thinking of whether [...]
In the last few years, annotation-driven libraries have been on the rise in new and even existing libraries. Rather than use configuration files such as XML or properties, libraries now make use of annotations in JDK 5 to mix the configuration directly inline with the code. This simplifies the configuration by not having to maintain [...]
One of the frequent patterns I make use of for Java backend systems are transactional code blocks, and not transactional in the sense of JPA, Hibernate, Databases, etc. I mean generic transactional blocks in which you have to wrap a piece of code with a begin and end block. For example, JPA is just one [...]
One of my applications has several millions cacheable entries. In order to cache as much as possible without going back to the database I use both a memory store and a disk store in my Ehcache configuration. Loading a serialized item from disk is still faster than loading from a database generally. That being said [...]
I have a use case within my database schema that involves a one-to-one relationship. Typically, I map most of my tables with an automatic auto-incrementing primary key. The relationship table then has a single foreign key to its single relationship. This works great within Hiberante and HQL without issue. That is until you begin to [...]
MySQL has the notion of specifying a specific index to use when invoking queries in order to override the default provided by MySQL. Typically, MySQL selects the most optimized index based on the query. However, in some cases, it fails to pick properly reducing performance. In those cases, you need to use the keyword “use [...]
Eclipse Galileo has officially been released and with it comes multitudes of changes. Below are my favorites from the Platform, JDT, and Web Tools projects. For more information, including screenshots, see: http://download.eclipse.org/eclipse/downloads/drops/R-3.5-200906111540/eclipse-news.html http://www.eclipse.org/webtools/releases/3.1.0/newandnoteworthy/index.php Mac OSX Builds Use Cocoa and Sheets The platform now uses native cocoa-build SWT widgets, rather than the obsolete Carbon. This brings [...]
If you use any popular open source technologies, odds are they use or you have used the Apache Commons libraries. The following is a free e-book on using those various libraries. Common Java Cookbook
One of the areas of JSF that I think suffers compared to other models such as JSP, PHP, etc is that it requires two paths instead of one. In JSP, for example, code is compiled directly into Java bytecode. That code is then directly executed when the servlet is accessed. As a result, a single [...]
Spring is often times considered a web application library similar to the EJB 3.x stack. However, Spring is so much more and can live in standalone applications as well. Today I am going to touch on using Spring in standalone applications to handle dependency or configuration management. I do not mean configuration management in the [...]
