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Subject: Re: [ws-rx] i093 cardinality replacements
Marc, On 24/05/06 13:21, Marc Goodner wrote: > I don't like 4. > Could you be a bit more specific? > I'm not sure I understand 5, it seems to remove the 2119 language > regarding cardinality but it doesn't seem to work for the content. > So this example: > /wsrm:CreateSequence/wsrm:Offer/wsrm:Identifier > This REQUIRED element MUST contain an absolute URI conformant with > RFC3986 [URI] that uniquely identifies the offered Sequence. > > Would become: > /wsrm:CreateSequence/wsrm:Offer/wsrm:Identifier > The cardinality of this element is 1. When present this element MUST > contain an absolute URI conformant with RFC3986 [URI] that uniquely > identifies the offered Sequence. > Your replacement still has the element taking an action. It's the sender or receiver of that element which MUST do something. In this case, the RMS MUST give it a particular type of value when using this element. A better replacement using the (5) model would be: The cardinality of this element is 1. An RMS MUST set the value of this element to an absolute URI conformant with RFC3986 [URI] that uniquely identifies the offered Sequence. > I really dislike 6. > OK, I think I remember why but could you remind me? thanx, doug > -----Original Message----- > From: Doug.Bunting@Sun.COM [mailto:Doug.Bunting@Sun.COM] > Sent: Thursday, May 18, 2006 5:58 PM > To: Gilbert Pilz > Cc: ws-rx@lists.oasis-open.org > Subject: Re: [ws-rx] i093 cardinality replacements > > Gil, > > A couple of other alternatives come to mind: > 4) "The cardinality of this element {within its parent|within an XYZ > {request|response}} is {0 or more|0 or 1|1 {or more}?}." > > 5) "The cardinality of this element is {0 or more|0 or 1|1 {or more}?}." > > This option relies on an implication that "cardinality" is scoped to > presence within its parent &c. > > 6) nuking these sentences and relying on the exemplars > > I believe this option was poorly received during our call / chat > today. > > I kind of like (5). > > thanx, > doug > > On 18/05/06 17:01, Gilbert Pilz wrote: > >> As of WD-12 our spec has a number of explanations of sub-elements with >> > > >> the following pattern: >> >> /wsrm:Foo/wsrm:Baz >> This [REQUIRED | OPTIONAL] element . . >> >> There are actually a number of different cases under which this >> pattern is used. >> >> 1) Describing a singly-nested sub-element within a message element. >> Example: /wsrm:CreateSequence/wsrm:AcksTo >> >> 2) Describing a singly-nested sub-element within a header element. >> Example: /wsrm:AckRequested/wsrm:Identifier >> >> 3) Describing a doubly-nested sub-element within a top-level message >> element when the parent element is optional. Example: >> /wsrm:CreateSequence/wsrm:Offer/wsrm:Identifier >> >> There are other cases like doubly-nested attributes within top-level >> header elements who's parent elements are optional, etc. but you get >> the point. >> >> >> I have used the following patterns to address these cases: >> >> 1) The RM [Source | Destination] [MUST | MAY] include this element in >> any Foo message it sends. >> >> (Note the use of the informal "Foo message" as shorthand for "SOAP >> envelope that includes the <wsrm:Foo> element in the body of that >> envelope") >> >> 2) An RM [Source | Destination] that includes a <wsrm:Foo> header >> block in a SOAP envelope [MUST | MAY] include this element in that >> header block. >> >> 3) An RM [Source | Destination] that includes a <wsrm:Baz> element >> within a Foo message [MUST | MAY] include this element as a child of >> the <wsrm:Baz> element. >> >> If anyone in the group has any suggestions on some better phrasing for >> > > >> these patterns I would be more than happy to hear them. >> >> Also, with respect to the idea that the current cardinality statements >> > > >> are somehow clear to the reader, take a second look at the example for >> > > >> case (3): >> >> /wsrm:CreateSequence/wsrm:Offer/wsrm:Identifier >> This REQUIRED element MUST contain an absolute URI conformant with >> RFC3986 [URI] that uniquely identifies the offered Sequence. >> >> What it *means* is that if you include an Offer in your CreateSequence >> > > >> then you MUST include the Identifier in that Offer but all it *says* >> is "This REQUIRED element . . ." This doesn't seem very clear to me at >> > all. > >> - gp >> >>
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