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/SaxParserConsumer.java
* @param tName
	 * @throws OdaException
	 */
	public SaxParserConsumer( ResultSet rs, RelationInformation rinfo, InputStream is, String tName) throws OdaException
	{
		this.resultSet = rs;
		
		
		cachedResultSetRowNo = 0;
		
		
		currentAvailableMaxLineNo = -1;
		tableName = tName;
		relationInfo = rinfo;
		
		
		currentRowNo = 0;
		
		cachedResultSet = new String[Constants.CACHED_RESULT_SET_LENGTH][resultSet.getMetaData().getColumnCount( )];
		this.rootPath = relationInfo.getTableRootPath( tableName );
		this.ancestorPath = relationInfo.getTableAncestor( tableName );
		this.isNotNestedXMLTable = rootPath.equals( ancestorPath );
		
		this.namesOfCachedColumns = relationInfo.getTableNestedXMLColumnNames( tableName );
		this.namesOfColumns = relationInfo.getTableColumnNames( tableName );
		
		XMLDataInputStream xdis = (is instanceof XMLDataInputStream)?(XMLDataInputStream)is:new XMLDataInputStream(is);
		
		if( !isNotNestedXMLTable )
		{