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
for ( int i = 1; i < xPathFrags.length;i++)
		{
			String temp = UtilConstants.XPATH_DOUBLE_SLASH;
			temp = addXPathFragsToAString( xPathFrags, i, temp );
			result.add( temp );
		}
		return result;
	}
	/**
	 * This method appends the items starting from certain index 
	 * in an array to a String to build an XPath expression
	 * 
	 * @param xPathFrags the String array
	 * @param i the index
	 * @param s the string
	 * @return
	 */
	private static String addXPathFragsToAString( String[] xPathFrags, int i, String s )
	{
		for( int j = i; j < xPathFrags.length;j++)
		{
			if( j < xPathFrags.length - 1 )
				s += xPathFrags[j] + UtilConstants.XPATH_SLASH;
			else
				s += xPathFrags[j];
		}
		return s;
	}