What if you want to develop Grails 2 projects with Eclipse Neon (4.6) as easy as you did with Groovy/Grails Tool Suite? Written and tested with Eclipse Neon and Grails 2.3, 2.4 and 2.5. Disclaimer: this post is a complete copy of my awesome colleague Ted Vinke’s post about eclipse Mars of last year! Actually, this is of course only … Lees verder Eclipse Neon: Grails 2.x with Groovy and GSP Support
What if you want to develop Grails 3 projects with Eclipse Mars (4.5) as easy as you did with Groovy/Grails Tool Suite or previous Eclipse versions? Written and tested with Eclipse Mars.1 Release (4.5.1, build 20150924-1200) and Grails 3.1.0 M1.
We know it’s all too common in Java to get a NullPointerException when we use an object reference which is null. This happens when our code tries to access a method or field of an object, or element of an array when there’s no instance present – e.g. it refers to null.
1 2 3 4 5 6 | class Animal { String name Animal parent } def animal = new Animal(name: "Bella") // no parent |
We might get an Animal instance from … Lees verder Avoid NullPointerException: Safe Navigation with Groovy
Grails 3 has been released with a ton of new features. If you’re used to adding a new Grails distribution in Eclipse or Groovy/Grails Tool Suite, you’ve might have experienced that your good old IDE might not support Grails 3 projects right out of the box. You might be missing: Grails 3 support at all 🙂 Gradle support Groovy 2.4 … Lees verder Grails 3 Released: Installing Gradle and Groovy 2.4 Support in Eclipse/GGTS
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
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
Java 8 is featuring lambdas, which are similar to a construction Groovy has already for some time: closures. In Groovy we could already do this:
1 2 3 | def list = ['a', 'b', 'c'] print list.collect { it.toUpperCase() } // [A, B, C] |
where { it.toUpperCase() } is the closure. In Java 8 we can achieve the same functionality now in a concise way.
1 | list.stream().map( s -> s.toUpperCase() ) |
Groovy’s strengths has always been the possibility to just copy ’n paste … Lees verder Groovy closures for now – no Java 8 lambdas just yet
