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Sunil Kunisetty <sunil.kunisetty@oracle.com> wrote at Fri, 20 Feb 2004 17:49:54 -0800: > Tony Graham wrote: ... > > What about the singleton case that also has a sequence number? > > In our colloquial references, a singleton is a message without SeqNum. > If it has a SeqNum, then it is considered has a Group. A group of > 1 is still valid.... In such case, the following example will apply If you mean considering a Group with only one message (that uses SequenceNum) as a Group for the purposes of reporting an Acknowledgment or Fault for that Group, then I see what you mean. However, Section 2.3 says, beginning at line 512, that a singleton group can be a message with a SequenceNumber: (1) In case there is only one message in the group (singleton): the group ID, which is a globally unique group identifier, may be used alone as Message Identifier. No sequence number is required, although allowed. I asked on Monday [1] what a singleton group with a sequence number would look like. (Well, I really just said that the spec should provide an example.) A group of 1 is not valid since the 'status' attribute can't indicate both the start and end of a group, and the 'status' value has to be 'Start' for the first message in a group (line 989): The sender node MUST send a very first message, to guarantee the message order, with "Start" for this attribute. ... > Currently there is no way to distinguish a Group with only one message > (that uses SequenceNum) as a Singleton unless Request Header is > also changed to reflect something similar. Then Section 2.3 should be changed or the 'status' attribute should allow a 'Single' value (or similar). At this point I think that it would be simpler to change Section 2.3. Regards, Tony Graham ------------------------------------------------------------------------ Web Products, Technologies and Standards Phone: +353 1 8199708 Sun Microsystems x(70)19708 East Point Business Park, Dublin 3, Ireland [1] http://www.oasis-open.org/archives/wsrm/200402/msg00127.html
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