Bug 121111 Bad event handler class name does not cause an error
Open a report design, open any Data Set's Property editor. Type in an invalid Java class name for the "Event Handler Class" property, say "aaa". Preview a report that uses that Data Set. The report executes normally. No error is shown. Event handlers are an integral part of a report design, and if a script handler class is not found, or if the handler throws a runtime exception, Report Engine should either stop the report execution, or show the error message in the generated report. (Tested with the 2005-12-15 nightly build)
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/GetParameterDefinitionTask.java
}
		}
		if ( ret != null )
		{
			if ( ret instanceof ScalarParameterDefn )
			{
				( ( ScalarParameterDefn ) ret ).setReportDesign( runnable
						.getDesignHandle( ).getDesign( ) );
				( ( ScalarParameterDefn ) ret ).setLocale( locale );
				( ( ScalarParameterDefn ) ret ).evaluateSelectionList( );
			} else if ( ret instanceof ParameterGroupDefn )
			{
				Iterator iter2 = ( ( ParameterGroupDefn ) ret ).getContents( )
						.iterator( );
				while ( iter2.hasNext( ) )
				{
					IParameterDefnBase p = ( IParameterDefnBase ) iter2.next( );
					if ( p instanceof ScalarParameterDefn )
					{
						( ( ScalarParameterDefn ) p ).setReportDesign( runnable
								.getDesignHandle( ).getDesign( ) );
						( ( ScalarParameterDefn ) p ).setLocale( locale );
						( ( ScalarParameterDefn ) p ).evaluateSelectionList( );
					}
				}
			}
		}
		return ret;
	}
	public SlotHandle getParameters( )