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Subject: [xacml] functions specifications
We need explicit specifications or pointers to specifications for the certain functions. A specification should include the exact type (i.e. xs:string, xs:dateTime, etc) of its arguments and the exact type of its return value. Also, we need explicit, if not formal semantics for the function's behavior. Note, their type signature is not sufficient. If we cannot find specifications for the following, I'd just assume we leave them out. However, that might not be good for some of the functions that we think are necessary. I'm reluctant to issue defintions for these things, because, I'm not up on internationalization of strings, and I'm definiately not familiar with the nuances of XML processing. For instance, "string-equal" works two arguments of xs:string. In XML, what do you do with leading and trailing whitespace or mulitiple lines? Does leading and trailing white space get ignored, or reduced, etc.? I'll bet *everybody* had a different approach. The following functions need specification: (They are also listed in the Functions Document I put on the list with [NEED SPECIFICATION]. Here's a compiled list. return 1st Arg 2nd Arg type string-equal xs:boolean xs:string xs:string Q: leading and trailing spaces, multiple lines, etc. date-equal xs:boolean xs:date xs:date time-equal xs:boolean xs:time xs:time dateTime-equal xs:boolean xs:dateTime xs:dateTime anyURI-equal xs:boolean xs:anyURI xs:anyURI x500Name-equal xs:boolean xs:x500Name xs:x500Name Q: Do we have an adequate specification on this from pkix? rfc822Name-equal xs:boolean xs:rfc822Name xs:rfc822Name hex-equal xs:boolean xs:hex xs:hex Q: Is the type xs:hex or xs:hexBinary? Q: leading and trailing spaces, multiple lines, etc. base64-equal xs:boolean xs:base64 xs:base64 Q: Is the type xs:base64 or xs:base64Binary? Q: leading and trailing spaces, multiple lines, etc. string-greater-than xs:boolean xs:string xs:string string-greater-than-or-equal xs:boolean xs:string xs:string Q: leading and trailing spaces, multiple lines, etc. Q: What if two different international strings? time-greater-than xs:boolean xs:time xs:time time-greater-than-or-equal xs:boolean xs:time xs:time Q: Are these relative to only one day? with Timezones? date-greater-than xs:boolean xs:date xs:date date-greater-than-or-equal xs:boolean xs:date xs:date datetime-greater-than xs:boolean xs:date xs:date datetime-greater-than-or-equal xs:boolean xs:date xs:date string-match xs:boolean xs:string xs:string rfc822Name-match xs:boolean xs:rfc822Name xs:rfc822Name x500Name-match xs:boolean xs:x500Name xs:x500Name Ann has a whole lot of other functions in the compliance tests such as: add-dayTimeDurations subtract-dayTimeDuration-from-time of which I still do not know how they are to proceed. I don't even know if we have a type for a datTimeDuration or what it looks like. Does anybody? I suggest that we leave all of these out, especially if we cannot come up with specifications for them. We can add them later when people do figure out how they want them to operate. Cheers, -Polar
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