Bug 150601 Drillthrough link from pdf(frameset) should link to frameset servlet instead of run.
Description: Drillthrough link from pdf(frameset) should link to frameset servlet instead of run. Steps to reproduce: 1. New a report 2. Insert a label and define a drill through link to other report 3. Preview in Web viewer, click Print as PDF button in viewer toolbar 4. Click drill through link in pdf Expected result: Target report opens through frameset sevlet instead of run servlet. Because the pdf is displayed through frameset servlet. Actual result: Target report opened through run sevlet
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/ReportEngineService.java
ReportItemHandle reportItem = getBindingHolder( elementHandle );
		if ( reportItem == null )
			return Collections.EMPTY_LIST;
		List selectValueList = new ArrayList( );
		DataRequestSession session = DataRequestSession
				.newSession( new DataSessionContext(
						DataSessionContext.MODE_DIRECT_PRESENTATION, reportItem
								.getModuleHandle( ) ) );
		selectValueList.addAll( session.getColumnValueSet( reportItem
				.getDataSet( ), reportItem.paramBindingsIterator( ), reportItem
				.columnBindingsIterator( ), bindingName ) );
		session.shutdown( );
		return selectValueList;
	}
	/**
	 * Returns the element handle which can save binding columns the given
	 * element
	 * 
	 * @param handle
	 *            the handle of the element which needs binding columns
	 * @return the holder for the element,or itself if no holder available
	 */
	private ReportItemHandle getBindingHolder( DesignElementHandle handle )
	{
		if ( handle instanceof ReportElementHandle )
		{
			if ( handle instanceof ListingHandle )
			{
				return (ReportItemHandle) handle;
			}