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Subject: comment on valueType vs xs:type in A.2
My apologies for the tardiness of this comment. This comment is on Section A.2 of WSS-SOAPMessageSecurity. I suggest that the valueType attribute be deleted. The use of xs:dateTime should be required, not recommended. I also suggest removing the phrases "for interoperability" and "for increased interoperability" as these don't add significantly to the understanding or the requirements. My suggested text: It is REQUIRED that all time references use this type. It is further RECOMMENDED that all references be in UTC Time. Rationale: While it is theoretically possible for other dateTime formats, say unix time, to be used, in practice all indications are that xml schema date time will be the standard. There does not appear to be any significant demand for this flexible functionality. Interoperability is considerabily helped by changing a Recommended to a Required, as then the fallback case and the use (or even prohibition) of valueType does not have to be defined through other means, such as profiles or interop comments. Also, using Schema's type attribute instead of a wss specific valueType means that schema validators can be used to validate the format of the dateTime, something which is not possible today with the use of the valueType. Cheers, Dave Orchard
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