Parse XML streams via ABAP program or class

Hi all,

because of a new requirement we would like to create characteristics from a XML file by using the following structure.

xmlns:gdt="http://sap.com/xi/SAPGlobal/Global" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

We do not use SAP XI but I would like to parse the XML stream from a file in order to have the information available in a ABAP program. For this reason I'm looking for a standard SAP ABAP program or class to read and parse such a XML file.

I would appreciate if somebody have more details on this topic.