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
ArrayList choices = new ArrayList( );
		try
		{
			if ( skipLevel > 1 )
				iter.findGroup( groupKeyValues );
			int startGroupLevel = skipLevel - 1;
			int count = 0;
			while ( iter.next( ) )
			{
				
				String label = ( labelExpr != null ? iter.getString( labelExpr )
						: null );
				Object value = iter.getValue( valueExpr );
				
				choices.add( new SelectionChoice( label, value ) );
				count++;
				if ( ( listLimit != 0 ) && ( count >= listLimit ) )
					break;
				iter.skipToEnd( skipLevel );
				int endGroupLevel = iter.getEndingGroupLevel( );
				if ( endGroupLevel <= startGroupLevel )
				{
					break;
				}
			}
		} catch ( BirtException e )
		{
			e.printStackTrace( );
		}
		if ( !fixedOrder )