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Subject: Re: [xacml] [policy model]: Object semantics proposal
i am having a hard time visualizing a regular expression evaluating hierarchical data structures. can you give an example? from your previous examples, my thinking was that it would be used solely to evaluate linear (string) values. b Michiharu Kudoh wrote: > > I think regex expressions could provide wider expressive power. > What I worried about was there seems to be no standard or no de-fact > standard for representing regular expression on tree structures. > Moreover, there seems to be no available algorithms or software products. > It could require a mechanism for making tree pattern matching and more. > Does anyone know about this? > > regards, > Michiharu Kudo > > From: bill parducci <bill@parducci.net> on 2001/10/26 19:39 > > Please respond to bill parducci <bill@parducci.net> > > To: Michiharu Kudoh/Japan/IBM@IBMJP > cc: xacml@lists.oasis-open.org > Subject: Re: [xacml] [policy model]: Object semantics proposal > > in addressing the topic of section 2.2 (Object Hierarchy With Wild Card > Notation) i would like to propose that we consider regex expressions > instead of simple wildcards. this will allow for much more robust > decision request attributes. to put it in context with michaharu's > example... > > in a system where you have the follwing: > > c:/winnt/system32 > c:/winnt2/system32 > c:/winnt3/system32 > c:/winnt4/system32 > c:/winnt5/system32 > c:/winnt[n]/system32 > > and you wanted access to only: > > c:/winnt3/system32 > c:/winnt4/system32 > c:/winnt5/system32 > > you could express this as > path="c:/winnt[345]/system32" > > rather than list each individually (as would be necessary with just "*" > notations). > > b > > Michiharu Kudoh wrote: > > > > I post a proposal of object semantics. > > It is similar to the one I posted last week. > > > > (See attached file: XACMLObjectSemantics.pdf) > > > > regards, > > Michiharu Kudo > > Internet Technology TEL +81-46-215-4642 > > Tokyo Research Laboratory FAX +81-46-273-7428 > > IBM Japan Ltd. Internet: kudo@jp.ibm.com > > ---------------------- Forwarded by Michiharu Kudoh/Japan/IBM on > 2001/10/22 > > 20:28 --------------------------- > > > > From: Michiharu Kudoh on 2001/10/15 20:03 > > > > To: "'xacml@lists.oasis-open.org'" <xacml@lists.oasis-open.org> > @internet > > cc: > > > > From: Michiharu Kudoh/Japan/IBM@IBMJP > > Subject: [xacml] [policy model]: Subject semantics proposal > > > > I post a proposal of subject semantics. > > > > >Action Items: > > >2. Submit subject semantics proposals. > > > > regards, > > Michiharu Kudo > > Internet Technology TEL +81-46-215-4642 > > Tokyo Research Laboratory FAX +81-46-273-7428 > > IBM Japan Ltd. Internet: kudo@jp.ibm.com > > *******Attachment(s) have been removed******* > > > > > ------------------------------------------------------------------------ > > Name: XACMLObjectSemantics.pdf > > XACMLObjectSemantics.pdf Type: Portable Document Format > (application/pdf) > > Encoding: BASE64 > > Download Status: Not downloaded with message
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