Using Multiple ELResolvers with CompositeELResolver in JSF
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
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
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?
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
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
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
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
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
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
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