PEECS 2003 Implementation Issues in the ebXML CPA formation process - the Referencing Problem - October 2 nd 2003 Curtin University, Department of Computer.

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Presentation transcript:

PEECS 2003 Implementation Issues in the ebXML CPA formation process - the Referencing Problem - October 2 nd 2003 Curtin University, Department of Computer Science, Perth, Australia Sacha Schlegel :: Andrew Marriott

Introduction to ebXML ebXML is a framework to enable global electronic business. Project initiated by OASIS and the UN/CEFACT. ebXML is technically based on proven technologies, such as XML, HTTP and UML.

CPA formation process The 'Collaboration Protocol Agreement (CPA) formation process' gets from 2 Collaboration Protocol Profiles (CPP's) to 1 CPA. This process can be broken down into: 1) CPA composition task and 2) CPA negotiation task

CPA composition FTP HTTP 1.1 FTP HTTP 1.1 HTTP 1.0 Simplified sample CPP's:

XML referencing IDREF problem Comparing messages against each other but actually we are comparing the referenced protocols, or even the child elements of the protocol element.

CPA composition - problem Comparing protocols against each other: Changing values in protocol-b when comparing protocol-b with protocol-x will overwrite values in the pair protocol-b with protocol-y.

CPA composition - problem FTP HTTP 1.1 FTP HTTP 1.1 HTTP 1.0 The problem:

CPA composition - solution Comparing updated protocols against each other: Changing values in protocol-b-copy no longer overwrites values in protocol-b. If there are no changes in protocol-b and protocol-b-copy then protocol-b-copy can be safely removed again.

Implications of copy solution ● Allows to go ahead with the CPA formation. ● Without a change, there is no success. ● Technically copying protocol-b no problem. ● Changing someones CPP problematic. – Owner of modified CPP might agree to a local change of the CPP. – Owner of modified CPP might agree and even update registered CPP. – Owner of modified CPP might not agree at all.

Presentations Presentation of results of the overall research (including the CPA composition and CPA negotiation): ● Australian ebXML WorkingGroup, organised by Standards Australia, Business Standards Group ● Big telecomunication company (hot technologies group) ● ebXML company ● Traditional electronic business company ● Perth Linux User Group (PLUG)

Questions Thank you Research Project available at: Questions & Answers