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Subject: [ebxml-msg] Attribute on Role within To and From elements,notes on Syntax and Semantics
This note briefly describes the functionality that Dale and Hima discovered while straightening out some interoperability problems related to the value for Role in BPSS, CPPA, and Messaging. It is presented as a slight enhancement of the Messaging Role element to strengthen alignment between Messaging, CPPA, and BPSS. It presumes that CPPA will make a clarification in an errata. Then corrected versions will clearly specify that the Messaging Role values equal the CPA Role/@name attribute values. The BPSS Role element is a child of BinaryCollaboration and provides a value for Role/@name within a CPA when BPSS is used. A BPSS description can involve transitions between several BinaryCollaborations, and the same Role value can thread its way through this sequence. Currently no value in the ebXML Message allows a MSH to track where the business process is within this sequence of BinaryCollaborations. However, the CPA also contains an xlink:href value that points to the specific Role element within a BinaryCollaboration. This value does suffice to "track" where the business process is within the specified sequence of BinaryCollaborations. If the current syntax "<Role>Buyer</Role>" were expanded by a minOccurs=0 attribute, possibly to be called "context," it would be possible to put the Role/@xlink:href value from the CPA into the message to track the position within a sequence of actions. That is, under the To and/or From elements, the Role element could be augmented to read: <Role context="http://www.BPStandards.org/scenario32/#buyerStep3">Buyer</Role> ---------------------------------------------------------------- To subscribe or unsubscribe from this elist use the subscription manager: <http://lists.oasis-open.org/ob/adm.pl>
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