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
IResultIterator iter = ( IResultIterator ) dataCache
				.get( parameterGroup.getName( ) );
		if ( iter == null )
			return Collections.EMPTY_LIST;
		SlotHandle slotHandle = parameterGroup.getParameters( );
		assert ( groupKeyValues.length < slotHandle.getCount( ) );
		int skipLevel = groupKeyValues.length + 1;
		ScalarParameterHandle requestedParam = ( ScalarParameterHandle ) slotHandle
				.get( groupKeyValues.length ); 
												
												
		int listLimit = requestedParam.getListlimit( );
		boolean fixedOrder = requestedParam.isFixedOrder( );
		
		
		
		
		
		
		
		
		
		
		
		ScriptExpression labelExpr = ( ScriptExpression ) labelMap
				.get( parameterGroup.getName( ) + "_"
						+ requestedParam.getName( ) );
		ScriptExpression valueExpr = ( ScriptExpression ) valueMap
				.get( parameterGroup.getName( ) + "_"
						+ requestedParam.getName( ) );