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
int exportHint = IColumnDefinition.DONOT_EXPORT; 
			if ( exportConstant
					.equals( DesignChoiceConstants.EXPORT_TYPE_IF_REALIZED ) )
				exportHint = IColumnDefinition.EXPORT_IF_REALIZED;
			else if ( exportConstant
					.equals( DesignChoiceConstants.EXPORT_TYPE_ALWAYS ) )
				exportHint = IColumnDefinition.ALWAYS_EXPORT;
			else
				assert exportConstant
						.equals( DesignChoiceConstants.EXPORT_TYPE_NONE );
			dteColumn.setExportHint( exportHint );
		}
		String searchConstant = modelColumnHint.getSearching( );
		if ( searchConstant != null )
		{
			int searchHint = IColumnDefinition.NOT_SEARCHABLE;
			if ( searchConstant
					.equals( DesignChoiceConstants.SEARCH_TYPE_INDEXED ) )
				searchHint = IColumnDefinition.SEARCHABLE_IF_INDEXED;
			else if ( searchConstant
					.equals( DesignChoiceConstants.SEARCH_TYPE_ANY ) )
				searchHint = IColumnDefinition.ALWAYS_SEARCHABLE;
			else
				assert searchConstant
						.equals( DesignChoiceConstants.SEARCH_TYPE_NONE );
			dteColumn.setSearchHint( searchHint );
		}
	}
	private IColumnDefinition newColumnDefn( ColumnHintHandle modelColumnHint )
	{