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Using Multiple ELResolvers with CompositeELResolver in JSF

Bozho February 5, 2010

Imagine the case where you have a JSF application that’s already using some custom ELResolver, but you want to get all the benefits of spring and want to have theContinue reading

Tips for Identifying and Debugging Problems

Bozho January 6, 2010

It seems that some/many developers haven’t developed (pun intended) a good set of techniques to identify and resolve problems. And problems always occur, even in simple programs. Recently I’ve beenContinue reading

Spring Annotation-Based vs XML-Based Transaction Definition Precedence

Bozho January 2, 2010

I couldn’t find a definitive answer to this in the docs, and although there seems to be a logical answer, one can’t be sure. The scenario is this – youContinue reading

Are Tests of Service Methods That Rely on Database Access Unit Tests?

Bozho December 29, 2009

It is often argued whether tests that need a database should be called “unit tests”. Most often the answer is “No, these are database integration tests”. My opinion is –Continue reading

JAXB: javax.xml.bind.UnmarshalException: unexpected element

Bozho December 18, 2009

JAXB: [javax.xml.bind.UnmarshalException: unexpected element (uri:”http://mynamespace/”, local:”entity”). Expected elements are ({}entity)] The following exception broadly means that an element encountered during unmarshallization isn’t found in the JAXB Context. The details, howeverContinue reading

Hibernate: could not locate named parameter

Bozho December 18, 2009

Today I got this exception. Pretty obvious? Well, no. The named parameter IS there. (Sidenote: this exception generally means that when trying to call setParameter(..) with a certain param name,Continue reading

Custom Exceptions Thrown From Service Layer with Spring Transaction Support

Bozho December 6, 2009

The title explains the preconditions: spring beans (conforming to an interface), using @Transactional (or <tx:advice>) custom exception is thrown from within the service methods There is a little trick –Continue reading

A Month on Stackoverflow

Bozho December 4, 2009

Stackoverflow is a programming Q & A site. There are all sorts of developers’ topics can be asked there, and most of them get answered pretty quickly. I won’t goContinue reading

Database Integration Testing / Unit-Testing with Spring, JPA, JUnit and Maven

Bozho November 22, 2009

The exact name for this tests is disputable. Whether it should be “database integration testing” or “unit testing”. But anyway, it is about this: Many applications’ service layer relies heavilyContinue reading

Deep @Embedded Hibernate Entity Hierarchy with Oracle

Bozho November 13, 2009

If you want to have a deep @Embeddable Hibernate entity hierarchy with Oracle – you are not welcome. Oracle has a genious unconfigurable (at least after a lot of search)Continue reading

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