Grails2 Features

New grails version2.0
During the work on the feature branch of grails-version 3: Grails Upcoming Version,
here the new delivered features of Grails2:

• All views will be made via generator in HTML5 with use of JQuery
• Advantage: client validation like syntax-checking
• better usability: feedback during inserts etc.
• mandatory fields which are defined in the domain class are accordingly rendered:
• with dynamic scaffolding static constraints are defined in the domain class and the dynamic view renders the fields as mandatory fields(e.g. with an * and validates the field accordingly):

                                 class domainX {
                                   String name
                                   ...
                                   static constrains = {
                                        name blank:false
                                  }
                                }
                     On the view the field name will be rendered as mandatory field.

• Server errors(HTTP Statuscode 500) are represented in a neat way: with stacktrace, message and the according groovy class.

• better performance: static ressources like images, CSS, *.js will be packed on the client side and cached
• New support for nosql-databases:
• Those can be accessed with the help of GORM.
• Persistence features:
• Detached Queries (reusable Queries beyond persistence session)
• Type-secure, compile-time secure Where-Queries!
• new convenient persistence methods: findOrCreate() etc.
• Abstract domain classes
• Grails-console has now got a TAB-completion like in a Linux-console
• Errors will be displayed on the Grails-console formatted and in colour
• Controller-Features
• Actions can now be methods and must not be anymore closures
• For a controller automatically unit tests can be generated:
• so called @TestFor-annotation with the class as parameter: 
• @TestFor(XYController)