Bug 124193 Parent axis doesn't work for recursive XPath
When table mapping for XML files is specified via recursive XPath: e.g. "//book", the parent axis access is broken for column mappings on such table: e.g. "../bookstore/@name" will not work. Same parent axis access works fine if non-recursive XPath is used for table mapping: e.g. "/bookstore/book".
data/org.eclipse.birt.report.data.oda.xml/src/org/eclipse/birt/report/data/oda/xml/util/ui/XPathPopulationUtil.java
if( rootPathFrags.length < 2 || columnPathFrags.length < 2 )
			return null;
		
		
		int startingIndex = 0;
		
		 
		int endingIndex = 0;
		
		
		
		if( !rootPath.startsWith(UtilConstants.XPATH_DOUBLE_SLASH))
		{
			
			
			if( !is2FragmentsEqual(columnPathFrags[1],rootPathFrags[1]))
				return null;
			else
			{
				rootPathFrags = (UtilConstants.XPATH_SLASH+rootPath).split(UtilConstants.XPATH_SLASH);
			}
		}
		
		assert rootPathFrags.length >= 3;
		
		String commonRoot = rootPathFrags[2];