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Data structure question

From: Rigo Wenning <rigo@w3.org>
Date: Sun, 29 Apr 2001 06:07:53 +0200
To: www-p3p-public-comments@w3.org
Message-ID: <20010429060753.A660@w3.org>
----- Forwarded message from Giles Hogben <giles@ontv.com> -----

Date: Sat, 28 Apr 2001 03:10:32 -0400 (EDT)
Message-ID: <033a01c0cf6e$2e29fdf0$35e9fc3e@Banana>
From: "Giles Hogben" <giles@ontv.com>
To: <www-p3p-public-comments@w3.org>
Subject: [Moderator Action] Data structure question

Hi,

I have a question on what appears to be an anomaly in the P3P spec:

According to the example given in the APPEL spec for category only data element expansion,
it's implied that only structref references with matching category attributes or no category attributes can match a structref element.
The example shows the onlne category which chooses only the uri elements from the online category. Any subsequent relational matches via the structref attribute are then only made to nodes which have  an <online/> grandchild (i.e. structures also in the online category) and this appears to make sense.

BUT

In the P3P spec, you give the example of a custom schema involving motorcycles and cars which gives vehicle.built.where a structref of ..base#postal
and a category of PREFERENCE.
But none of the base schema postal structures are in the PREFERENCE category, which means that a parser running according to the rules implied in the APPEL spec would ignore any of the nodes with postal references:

Am I confused about something or what is the explanation for this?

Thanks

Giles Hogben

----- End forwarded message -----
Received on Sunday, 29 April 2001 00:08:13 UTC

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