Subject: XER (XML Encoding Rules)
Eliot Christian (echristi@usgs.gov)
Date: Wed, 11 Nov 1998 06:38:37 -0500
Message-Id: <199811111147.GAA28963@igsrsparc4.er.usgs.GOV> Date: Wed, 11 Nov 1998 06:38:37 -0500 To: gils@cni.org From: Eliot Christian <echristi@usgs.gov> Subject: XER (XML Encoding Rules)
The GILS Profile specifies use of ANSI Z39.50 (ISO 23950)
over the Internet. Z39.50 itself is described using ASN.1
(Abstract Syntax Notation) and Basic Encoding Rules (BER).
Z39.50 itself is independent of the underlying encoding.
In working on an RFP for Catalog Services from the Open GIS
Consortium, the idea was advanced to use XML for encoding
message structures. So, some of us are exploring the
feasibility of a utility for an XML encoding of Z39.50
Protocol Data Units--in effect, XML Encoding Rules (XER).
The basic idea is to standardize rules for transforming
appropriate ASN.1 encoded data structures into equivalent
XML data structures and appropriate XML encoded
data structures into equivalent ASN.1 data structures.
I've made a place to post stuff related to this idea at
<http://asf.gils.net/xer/>. All suggestions and comments
are welcome!
Eliot Christian, US Geological Survey, 802 National Center, Reston VA 20192
echristi@usgs.gov Office 703-648-7245 FAX 703-648-7112 Home 703-476-6134
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