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Customizing exception alert 'Workflow could not be started'

Question asked by michalwrobel on May 29, 2012
Latest reply on Jun 12, 2012 by swemon

I've created my own workflow with a java ServiceTask.
After filling initial form I do some checks in this ServiceTask and I throw exception of my own type (extending Exception) if something is wrong.

I want to customize the error message 'Workflow could not be started', which is passed to user.

I figured out that in AtomicOperationActivityExecute class exceptions of all types are caught and decorated with some additional text, so I made some amendments there
try {
    } catch (RuntimeException e) {
      throw e;
    catch (MyOwnException e)
        throw new PvmException(e.getMessage());       
    catch (Exception e) {
        throw new PvmException("couldn't execute activity <"+activity.getProperty("type")+" id=\""+activity.getId()+"\" …>: "+e.getMessage(), e);

but I still get my message prefixed with runtime exception class name "org.activiti.engine.impl.pvm.PvmException:".
I want just my exception message.

I tried to debug it further, but after the lines above 'magic' happens. I couldn't find any spot where the exception message is  concatenated with class name.

Is it somewhere in Spring/Surf code or in Share javascript? Could you please show me where should I look to change this behavior?

After a whole day with debugger I am stuck, any help will be appreciated :(