Epsilon Wizard Language
EWL is a language tailored to interactive in-place model transformations on user-selected model elements (unlike ETL which operates in a batch mode). EWL is particularly useful for automating recurring model editing tasks (e.g. refactoring, applying patterns or constructing subtrees consisting of similar elements). EWL is integrated with EMF/GMF and as such, wizards can be executed from within EMF and GMF editors
Features
- Execute wizards within EMF and GMF editors
- Define guards in wizards
- Undo/redo the effects of wizards on the model
Features inherited from EOL
- Support for simultaneously accessing/modifying many models of (potentially) different metamodels
- All the usual programming constructs (while and for loops, statement sequencing, variables etc.)
- Support for those convenient first-order logic OCL operations (select, reject, collect etc.)
- Ability to create and call methods of Java objects
- Support for dynamically attaching operations to existing meta-classes and types at runtime
- Support for cached operations
- Support for extended properties
- Support for user interaction
- Ability to create reusable libraries of operations and import them from different Epsilon (not only EOL) modules
Examples and Screencasts
- Screencast: Specifying and executing wizards in the UML2 class diagram editor
- Article: Bridging the Epsilon Wizard Language and the Eclipse Graphical Modeling Framework
- Article: Model Refactoring in GMF editors
- Article: Model Refactoring in EMF editors