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Subject: Re: [wsn] Identifying WS-BaseNotification dependencies on WSRF
One note on Precondition and Selector: >Section 4.2: The Subscribe message has 2 fields of type QueryExpression >as defined in WSRF-RP. The fields are Precondition and Selector. It is >not clear that these fields have the same type of expression as the >operation QueryResourceProperties defined in WSRF-RP. There is a >statement that the Subscribe message must follow the implied resource >pattern. > > The WSRP spec just says that a QueryExpression looks like <wsrp:QueryExpression dialect="someURI"> {any} </wsrp:QueryExpression> The dialect, content and semantics are completely extensible. This is fine, but as far as I can tell, WSRP is simply defining an element name and an attribute. It seems more direct just to say <wsnt:Precondition dialect="someURI"> {any} </wsnt:Precondition> and similarly for Selector. This would bring these two in line with TopicExpression and spare the reader from chasing the link to WSRP.
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