Error when creating custom controller

Question

I have a non-visual WebDynpro DC that contains a single data model.  The model has been added to the public part of the DC.
I have another visual WebDynpro DC that makes use of the data model in the first DC.  If I explicitly reference the model in the first DC, everything works just fine.  I can input data, invoke the model, and see the response displayed on the page.
However, I'm trying to create a custom controller that hides the data model.  When in the data modeller for the visual WD DC, I right click on the 'Custom Controllers' pane, and select 'Apply Template'.  I create a Service Controller, and select the model that's been imported (actually, that's been referenced as a used component) from the first DC.  I then select the data elements from the context that I want bound into this custom controller.  Click next, give a more descriptive method name, and then click Finish.  I get an internal error as follows:
Source controller implementation file is not accessible (D:/src/.dtc/LocalDevelopment/DCs/example.com/test-wd-view/_comp/gen_wdp/packages/com/example/wd/AdderModelCust.java)
Exception: java.lang.NullPointerException
Am I doing this correctly, or am I missing a step or two?

Answer 1

Hi Ken,
you didn't miss some steps, this seems to be a bug in the tools. Please open a OSS message with the following information:
- which Studio version you use (NW04/04s? SP?)
- description of how to reproduce the effect
- Studio's error log attached (.log file in <YourWorkspaceFolder>/.metadata)
In the meanwhile to circumvent the error you should try to
- create a new custom controller manually in WD explorer and launch Service Controller template from this controller (context menu in WD explorer)
- if this fails as well, manually create the context definitions and method implementation that the template would produce.
Regards
Christian