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/adapter/ModelDteApiAdapter.java
String queryTextBinding = modelDataSet.getPropertyBinding( 
				OdaDataSet.QUERY_TEXT_PROP );
		if ( needPropertyBinding( )
				&& queryTextBinding != null && queryTextBinding.length( ) > 0 )
		{
			dteDataSet.setQueryText( evaluatePropertyBindingExpr( queryTextBinding ) );
		}
		else
		{
			dteDataSet.setQueryText( modelDataSet.getQueryText( ) );
		}
		
		dteDataSet.setExtensionID( modelDataSet.getExtensionID( ) );
		
		dteDataSet.setPrimaryResultSetName( modelDataSet.getResultSetName( ) );
		
		Map staticProps = getExtensionProperties( modelDataSet, modelDataSet
				.getExtensionPropertyDefinitionList( ) );
		if ( staticProps != null && !staticProps.isEmpty( ) )
		{
			Iterator propNamesItr = staticProps.keySet( ).iterator( );
			while ( propNamesItr.hasNext( ) )
			{
				String propName = (String)propNamesItr.next( );
				assert ( propName != null  );
				String propValue;
				String bindingExpr = modelDataSet.getPropertyBinding( propName );