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/RelationInformation.java
private int backRefNumber;
	
	/**
	 * 
	 * @param index
	 * @param name
	 * @param type
	 * @param path
	 * @param originalPath
	 * @throws OdaException
	 */
	public ColumnInfo( int index, String name, String type, String path,
			String originalPath ) throws OdaException
	{
		this.index = index;
		this.name = name;
		this.type = type;
		if ( !DataTypes.isValidType( type ) )
			throw new OdaException( Messages.getString( "RelationInformation.InvalidDataTypeName" ) );
		this.path = fixTrailingAttr( buildPath( path ) );
		this.originalPath = originalPath;
		generateBackRefNumber( originalPath );
	}
	/**
	 * @param originalPath
	 */