Description Michael Clay 2011-06-26 14:40:55 EDT

running the default (wizard) created GenerateMyDsl.mwe2 for a project with non existing classpath folders
yields a misleading respectively not necessary illegal argument exception:

steps to reproduce:

1. disable automatic builds (i.e. defers the actual classpath folder creation to the first project build)
2. create a new xtext project
3. run the default workflow file

1    [main] ERROR mf.mwe2.launch.runtime.Mwe2Launcher  - Unsupported path : /Users/mclay/workspace/runtime-EclipseApplication/org.xtext.example.mydsl/bin (only folders and archives are supported).
java.lang.IllegalArgumentException: Unsupported path : /Users/mclay/workspace/runtime-EclipseApplication/org.xtext.example.mydsl/bin (only folders and archives are supported).
	at org.eclipse.xtext.mwe.PathTraverser.findAllResourceUris(PathTraverser.java:46)
	at org.eclipse.xtext.mwe.PathTraverser.resolvePathes(PathTraverser.java:33)
	at org.eclipse.xtext.mwe.RuntimeResourceSetInitializer.getPathToUriMap(RuntimeResourceSetInitializer.java:54)
	at org.eclipse.xtext.mwe.RuntimeResourceSetInitializer.getInitializedResourceSet(RuntimeResourceSetInitializer.java:72)
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.findModule(Mwe2Runner.java:112)
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:77)
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:73)
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:64)
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:55)
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Launcher.run(Mwe2Launcher.java:74)
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Launcher.main(Mwe2Launcher.java:35)


i suggest to filter non existing java.classpath entry urls to avoid misleading IAE's mentioned above.