GXL Progress Report

1
GXL Progress Report

• Susan Elliott Sim
• on behalf of
• Andreas Winter, Ric Holt, and Andy Schürr
• and the GXL Mailing List

2
Overview

• GXL Concepts
• Standards Activities
• Partners
• Schemas
• Tools

3
Key Concepts of GXL

• An XML sub-language for exchanging graphs
• Underlying data model is a typed, attributed
  graph
• Analogous to databases using tables as underlying
  data representation
• Schema and instance data are represented
  separately
• Analogous to distinction in databases
• Schema and instance data use a uniform
  representation

4
GXL 1.0

• Released February 14, 2001
• Ratified by reengineering community at Schloss
  Dagstuhl, Germany, January 26, 2001
• Ratified by graph transformation community at
  APPLIGRAPH Subgroup Meeting, Bremen, March 1-2,
  2001
• In discussions with graph drawing community

5
Standards Activities

• Cited in XML OASIS Cover Pages and XML.orgs XML
  Standards Report
• Plan to become an IEEE Software Engineering
  Standard
• In discussions with IBM and Daimler-Chrysler on
  usage and representation to OMG

6
GXL Partners

• Over 35 researchers in 9 countries
• Germany, Canada, USA, UK, Hungary, Finland, The
  Netherlands, Switzerland, Brazil
• 62 subscribers on mailing list
• 47 full text, 16 digest only
• Being used in undergraduate software engineering
  course, U of Toronto

7
Converters

• GXL reader/writer for Bauhaus Resource Graphs, U
  Stuttgart
• GXL2RPA, RPA2GXL, Philips, Eindhoven
• GXL2G, G2GXL, U Koblenz
• GXL2Progres, Progres2GXL, U Aachen
• GXL2Prolog, Nokia
• GXL2RSF, RSF2GXL, U Victoria, Nokia
• GXL2TA, TA2GXL, U Waterloo
• GXL2XMI, U BW Munchen
• GXL Converter Framework, U BW Munchen

8
Tools and Applications

• ?-check, ?-table (model checking using
  multi-valued logic) U Toronto
• CPPX (C AST Extractor), U Waterloo
• Columbus/CAN (C Extractor and Analyzer), U
  Szeged
• ECW (Edinburgh Concurrency Workbench), U
  Edinburgh
• Fujaba (Roundtrip Engineering for UML diagrams) U
  Paderborn
• GenSet (simple graph transformations), U Oregon
• GRAS (Graph Data Base) U Aachen
• GXLQuery, U Koblenz
• GXLSchemaChecker, U Koblenz
• GXLSchemaEditor, U BW München
• lsedit, U Waterloo
• Royere (graph visualization), CWI Amsterdam
• TkSee/SN (fact extractor), U Ottawa
• UPGRADE (visual languages), RWTH Aachen
• Venice (UML visualization), Nokia
• yFiles (graph visualization), U Tübingen

9
Standard Schemas

• C Standard Schema
• Ferenc, Gyimothy, Holt, Koschke, Sim, Winter,
  Riediger, Kullbach
• Dagstuhl Middle Level Model
• Lethbridge, Tichelaar et al.
• Data Reverse Engineering Reference-Schema (DRE)
• Jahnke, Mylopoulos, Wadsack, Hainault, Henrard
• Architectural Level?

10
Summary

• Lots of progress since last WCRE
• Starting to realize the benefits of tool
  interoperability
• Currently in usage and feedback phase
• More information
• http//www.gupro.de/GXL
• Comments, tool updates, change requests
• gxl_at_uni-koblenz.de