App Engine supports the JDO standard for storing objects into a database. JDO requires post-compilation "enhancement" to associate your data classes with the JDO implementation. The plugin performs this step automatically. Output from the enhancer is displayed in the Console view.
By default, the JDO enhancer will run on save for each Java source file in the
src. To customize the set of files that require enhancement,
right-click the project and select Google > App Engine > ORM.
You can include individual files or entire packages or source paths from ORM enhancement.
The inclusion filters also understand wildcard parameters (e.g.