Running and rerunning UML-to-Java transformations

You can run a transformation on an entire UML model or on a subset of model elements to generate output such as code. When you rerun the transformation after you change the source model or the generated code, you must identify the sections of generated code that you do not want the transformation to overwrite, and then protect them. Rerunning a transformation involves the same steps as running a transformation for the first time.

• Running UML-to-Java transformations
  You can run a transformation on an entire model, or on a subset of elements in a model to generate the output that you expect. You can run a transformation on the source model or elements that you specify in the transformation configuration, or you can override the source specified in the transformation configuration by selecting elements in the model and then choosing a transformation configuration to apply.