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[Bug 8076] New: Enum and Eventing: Inconsistent Across Protocol and Metadata

From: <bugzilla@wiggum.w3.org>
Date: Mon, 26 Oct 2009 20:59:57 +0000
To: public-ws-resource-access-notifications@w3.org
Message-ID: <bug-8076-2780@http.www.w3.org/Bugs/Public/>

           Summary: Enum and Eventing: Inconsistent Across Protocol and
           Product: WS-Resource Access
           Version: FPWD
          Platform: PC
        OS/Version: Windows NT
            Status: NEW
          Severity: normal
          Priority: P2
         Component: All
        AssignedTo: public-ws-resource-access-notifications@w3.org
        ReportedBy: asirveda@microsoft.com
         QAContact: public-ws-resource-access-notifications@w3.org

> ACTION-108: Raise second and third editorial note as new issue and they will be deleted (see http://www.w3.org/2002/ws/ra/tracker/actions/108).


The WS-Enumeration protocol relies on the absence of the Expire element to
indicate infinite lifetime. Whereas, the optional
/wsenp:Enumeration/wsenp:MaxExpires policy assertion parameter relies on the
value 'PT0S' to indicate that an endpoint supports enumerations with an
infinite lifetime. At the Hursley F2F, to avoid confusion, the WG assigned an
action to Asir to raise this as a separate issue.

WG resolutions for issues 7478 [1] and 7587 [2] reinforced that the absence of
the Expire element indicates infinite lifetime.


s/Note: a value of "PT0S" indicates that this endpoint supports enumerations
with an infinite lifetime./The implied default is indefinite (no expiry)./

There is a precedent in WS-RA specs for relying on the absence of policy
assertion parameters to signal defaults. TransferResource policy assertion
says, "Unless support for OPTIONAL operations is explicitly indicated by either
the PutOperationSupported or DeleteOperationSupported parameters only the Get
operation is supported."

The same reasoning applies to the following policy assertion parameters:


[1] http://www.w3.org/Bugs/Public/show_bug.cgi?id=7478#c4
[2] http://www.w3.org/Bugs/Public/show_bug.cgi?id=7587#c3


Asir S Vedamuthu
Microsoft Corporation

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Received on Monday, 26 October 2009 21:00:01 UTC

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