Question

I have an Xtext/Xpand (oAW 4.3, Eclipse 3.4) generator plug-in, which I run together with the editor plug-in in a second workbench. There, I’d like to run Xpand workflows programmatically on the model file I create. If I set the model file using the absolute path of the IFile I have, e.g. with:

String dslFile = file.getLocation().makeAbsolute().toOSString(); 

Or if I use a file URI retrieved with:

String dslFile = file.getLocationURI().toString(); 

The file is not found:

org.eclipse.emf.ecore.resource.Resource$IOWrappedException: Resource '/absolute/path/to/my/existing/dsl.file' does not exist.  at org.openarchitectureware.xtext.parser.impl.AbstractParserComponent.invokeInternal(AbstractParserComponent.java:55) 

To what value should I set the model file attribute (dslFile) in the map I hand to the WorkflowRunner:

Map properties = new HashMap(); properties.put('modelFile', dslFile); 

I also tried leaving the properties empty and referencing the model file relative to the workflow file (inside the workflow file), but that yields a FileNotFoundException. Running all of this in a normal app (not in a second workbench) works fine.

Answer 1

I found help at the openArchitectureWare forum. Basically using

properties.put('modelFile', file.getLocation().makeAbsolute().toOSString()); 

works, but you need to specify looking it up via URI in the workflow you are calling:

<component class='org.eclipse.mwe.emf.Reader'>     <uri value='${modelFile}'/>     <modelSlot value='theModel'/> </component>