Bug 193259 Enhance about the process of java script and event handler.[08]
Description: Enhance about the conflict of java script and event handler. I have a case, I design a report with script data source and script dataset. Previously I wrote java script for dataset in script view and it works. Then I decided to use event handler to process script dataset, I wrote a java class to extends ScriptedDataSetEventAdapter and overwrite open and fetch methods. As I want to keep the script in script view, I just comment them by /**/. Run the report will throw Exception. I found it's caused by comments in script view. If I deleted them, the report works. I attached the report and java class.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/script/internal/DataSetScriptExecutor.java
super( context );
		this.dataSetHandle = dataSetHandle;
		String className = dataSetHandle.getEventHandlerClass( );
		initEventHandler( className );
	}
	protected void initEventHandler( String className )
	{
		if ( className != null )
		{
			try
			{
				eventHandler = ( IDataSetEventHandler ) getInstance( className,
						context );
			} catch ( ClassCastException e )
			{
				addClassCastException( context, e, className,
						IScriptedDataSetEventHandler.class );
			}
		}
	}
	public void handleBeforeOpen( IDataSetInstanceHandle dataSet )
	{
		if ( reportContext == null )
			return;
		try
		{
			JSScriptStatus status = handleJS( dataSet.getScriptScope( ),
					dataSet.getName( ), BEFORE_OPEN, dataSetHandle
							.getBeforeOpen( ) );
			if ( status.didRun( ) )