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/script/internal/DataSetScriptExecutor.java
if ( reportContext == null )
			return;
		try
		{
			JSScriptStatus status = handleJS( dataSet.getScriptScope( ),
					dataSet.getName( ), AFTER_OPEN, dataSetHandle
							.getAfterOpen( ) );
			if ( status.didRun( ) )
				return;
			if ( eventHandler != null )
				eventHandler.afterOpen( new DataSetInstance( dataSet ),
						reportContext );
		} catch ( Exception e )
		{
			log.log( Level.WARNING, e.getMessage( ), e );
		}
	}
	public void handleAfterClose( IDataSetInstanceHandle dataSet )
	{
		if ( reportContext == null )
			return;
		try
		{
			JSScriptStatus status = handleJS( dataSet.getScriptScope( ),
					dataSet.getName( ), AFTER_CLOSE, dataSetHandle
							.getAfterClose( ) );
			if ( status.didRun( ) )
				return;
			if ( eventHandler != null )
				eventHandler.afterClose( reportContext );