"I need to figure out how to add custom bosses so my server will be more fun!" is much more fun and interesting to a teenager than "I need to figure out how to remove a Car object from this list of Car objects". Making a server gave me clear goals that helped me learn coding much faster. I went a similar path with Minecraft servers (and also first started with Runescape, both are in Java) - making a server in highschool and grossing ~$150k in a year and a half.īefore making a server, I thought coding was cool, but had never done much beyond running some basic programs. IsolationLevel: TransactionDefinition.Games with strong user-hosted server ecosystems seem to be a great way for kids to start gaining serious coding experience. of .DefaultTransactionDefinitionĪccount.withTransaction([propagationBehavior: TransactionDefinition.PROPAGATION_REQUIRES_NEW, the keys in the Map must correspond to properties The Grails compiler will allow certain things to be considered valid and dynamically dispatch those instructions. When the compiler encounters code which can not be statically validated, normally that would result in a compile error. The following controller is marked with All of the code that can be statically compiled will be statically compiled. ![]() The annotation behaves much like the annotation and provides special handling to recognize Grails specific constructs. Grails 2.4 improves on this by allowing code to be statically compiled and still do things like invoke GORM dynamic finders. For example, if a method marked with contains code which invokes a GORM dynamic finder the code will not compile because the Groovy compiler cannot verify that the dynamic finder is valid. In general, Grails supports Groovy's static compilation but there are a lot of special situations which are common in a Grails app which cannot be statically compiled. See these notes on Groovy static compilation. Groovy is a dynamically dispatched, dynamically typed language by default but also has great support for static type checking and static compilation. Now, defining manifests are done directly in your JavaScript files, or CSS by using require directives!Įnjoy developing with on the fly asset processing, asset compiling on WAR, and much more. Three folders are made for you by default: CoffeeScript, LESS, SASS).Īll your assets should now live in the grails-app/assets subfolders. The asset-pipeline provides a new, easier to manage, faster means of managing your JavaScript, CSS, and images, while also bringing compiled client languages in to the fray as first-class citizens (e.g. The Asset-Pipeline replaces Resources to serve static assets. See the following guides / examples for more information: GORM and GSP can now be used outside of Grails. Grails 2.4 now uses Hibernate 4.3.5 by default (Hibernate 3 is still available as an optional install). Grails 2.4 comes with Spring 4.0.4 which includes many new features and enhancements. Grails 2.4 comes with Groovy 2.3 which includes many new features and enhancements.įor more information on Groovy 2.3, see the comprehensive release notes. This documentation will take you through getting started with Grails and building web applications with the Grails framework. ![]() A transactional service layer built on Spring's transaction abstractionĪll of these are made easy to use through the power of the Groovy language and the extensive use of Domain Specific Languages (DSLs).Support for internationalization (i18n) built on Spring's core MessageSource concept.Dependency injection with the inbuilt Spring container.An embedded Tomcat container which is configured for on the fly reloading.A command line scripting environment built on the Groovy-powered Gant.An expressive view technology called Groovy Server Pages (GSP).An easy to use Object Relational Mapping (ORM) layer built on Hibernate.Grails is a full stack framework and attempts to solve as many pieces of the web development puzzle through the core technology and its associated plugins. What makes it different, however, is that it does so by building on already established Java technologies like Spring and Hibernate. Grails builds on these concepts and dramatically reduces the complexity of building web applications on the Java platform. Most modern web frameworks in the Java space are over complicated and don't embrace the Don't Repeat Yourself (DRY) principles.ĭynamic frameworks like Rails, Django and TurboGears helped pave the way to a more modern way of thinking about web applications. Java web development as it stands today is dramatically more complicated than it needs to be.
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