Cache collision and ehcache spring annotations module

If you are looking for a way to implement declarative caching with Spring, there is no way around Ehcache Spring Annotations [1]. This superimposes a transparent aspect on methods of any proxied bean, taking the method arguments as a key. Little known but easy to stumble upon [2] is an implementation (design?) quirk which expects … Continue reading Cache collision and ehcache spring annotations module →

Annotations, Java compiler and missing debugging information

So I play with my favorite ant build script and a day later nearly every annotation is broken: java.lang.IllegalStateException: No parameter name specified for argument of type [java.lang.String], and no parameter name information found in class file either. as far as the eye goes. What actually happened is that the new deployment skips debugging information … Continue reading Annotations, Java compiler and missing debugging information →

Ant terminating immediately in Eclipse without any errors

Recently all ant builds started failing when started from within Eclipse without an apparent reason. When the ant target is invoked, the console briefly opens and closes again, without any message or error. /workspace/.metadata/.log finally reveals the cause: java.lang.NoClassDefFoundError: org/apache/tools/ant/BuildException Some Ant classes seem to be missing, strange. A look at Window -> Preferences -> … Continue reading Ant terminating immediately in Eclipse without any errors →

Tomcat, Eclipse, Spring and reloading

As a webapp gets bigger the time it takes to boot also increases which is a serious factor contributing to decreased focus and productivity when programming. When running Tomcat with Eclipse, the web application may restart even for the most trivial changes incurring long pauses. I found the following settings for Tomcat to minimize restarts … Continue reading Tomcat, Eclipse, Spring and reloading →

Non-Latin characters, openID and the openid4java library

The openid4java [1] library is a very handy set of components that handles openid and oauth for java applications and definitely worth a look before you capitulate in frustration before all that modern openid stuff. For those of us living and working outside the 7bit-speaking ANSI niche there is one webserver setting to verify: the … Continue reading Non-Latin characters, openID and the openid4java library →