Bug 153514 [Regression]Can't Drill-Through to reportdesign which is in the current path
Description: Can't Drill-Through to reportdesign which is in the current path Step to reproduce: 1. new a report named "target.rptdesign" and add label 2. new another report named "Drillthrough.rptdesign" and also add a label in it 3. Choose the lable in second report and edit its Hyperlink: Drill through target.rptdesign 4. preview it by any form Excepted result: Target.rptdesign can be drill-throughed Actual result: Display "The design file /D:/Eclipses/eclipse200608110630/plugins/org.eclipse.birt.report.viewer_2.1.0.v20060811-0630/birt/documents/4F9E34353BCD20DC7687037D6B8B7A25/Acceptance/Target.rptdesign can not be found. " But if Drill-Through with absolute path is ok.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/ReportDocumentReader.java
}
	public String getVersion( )
	{
		return version;
	}
	/**
	 * create a locker used to lock the report document
	 * 
	 * @return
	 * @throws BirtException
	 */
	protected IReportDocumentLock lock( String documentName )
			throws BirtException
	{
		IReportDocumentLockManager manager = null;
		if ( engine != null )
		{
			EngineConfig config = engine.getConfig( );
			if ( config != null )
			{
				manager = config.getReportDocumentLockManager( );
			}
		}
		if ( manager == null )
		{
			manager = ReportDocumentLockManager.getInstance( );
		}
		return manager.lock( documentName );
	}
	protected class ReportDocumentCoreInfo