When working with GORM domain classes and using DetachedCriteria (for example the ‘where’ method on domain classes), you will notice at some point that all joins will be inner joins! If the database setup requires an outer (left) join, then the default GORM api has no way to specify this, so you will need a workaround. This workaround works by … Lees verder Outer joins and domain classes
In enterprise situations you will often find a mashup of polyglot systems, many systems and many languages working together. The glue that commonly binds different systems are databases. You can imagine though, that going through the database, using a network connection, is not always always suitable. In many cases a simple local in-process call offers the necessary performance gains. For … Lees verder Native code interop with JNA
Caches are difficult to get right, and difficult to maintain. To get an insight into how well the Spring method caches we are using actually work, I added some logging. Spring method caches are annotated using ‘Cacheable’. It seemed like a good idea to at least have some information on: how often a cache is hit how long the call … Lees verder Debugging caches using groovy logging
[box type=”shadow”]Or: “getting parallel deployment to work when using EhCache”[/box] Caching During our regular Grails development work, we apply both Hibernate with second level caching and Spring method level caching. They both use EhCache by default. This seems to be the only mature implementation choice for the Grails platform. All this used to work fine (so we thought) until we … Lees verder Fix CacheManager with same name grails-cache-ehcache
A simple test Since I wanted to have some test coverage (legacy code alert!) for my project I started out testing one of the services, a grails artefact. All was well, I’m using Spock and testing is a breeze. At some point I wanted to have another component to return a fixed value so I would have something predictable to … Lees verder Grails, private method scope and mocks
Redhat has released Ceylon 1.0 beta! Including a new release of the eclipse IDE plugin which means it’s actually starting to become usable and who knows even practical. The classes from both languages, java and ceylon, work together like peas in a pod! Don’t believe me? Just follow the instructions on installing Ceylon (which is really easy if you know … Lees verder Exploring Ceylon
Though the api’s for working with threads have improved, testing asynchronous processes proves difficult.
The tiny awaitility library saves and lot of useless coding and eases the pain of polling state when testing asynchronous code.
When transferring data from server to the client (javascript) application in GWT, one option is to use the built-in AutoBean framework. According to the documentation, it’s pretty straightforward and problem free: http://code.google.com/p/google-web-toolkit/wiki/AutoBean The reality though is, that the documentation may be a little to ‘concise’ and does not explictly cover all constraints. The whole system in short work like this: … Lees verder AutoBean restrictions in GWT
