xep-0064.xml

<?xml version='1.0' encoding='UTF-8'?>

<!DOCTYPE xep SYSTEM 'xep.dtd' [
  <!ENTITY % ents SYSTEM "xep.ent">
%ents;
]>

<?xml-stylesheet type='text/xsl' href='xep.xsl'?>

<xep>
<header>
  <title>XPath Filtering</title>
  <abstract>A module that provides an XPath matching condition for packet filtering.</abstract>
  &LEGALNOTICE;
  <number>0064</number>
  <status>Deferred</status>
  <type>Informational</type>
  <sig>Standards</sig>
  <dependencies><spec>XEP-0062</spec></dependencies>
  <supersedes/>
  <supersededby/>
  <shortname>Not yet assigned</shortname>
  <author>
    <firstname>Robert</firstname>
    <surname>Norris</surname>
    <email>rob@cataclysm.cx</email>
    <jid>rob@cataclysm.cx</jid>
  </author>
  <revision>
    <version>0.2</version>
    <date>2003-09-30</date>
    <initials>psa</initials>
    <remark>At the request of the author, changed the status of this document to Deferred pending development of an implementation; also changed the type to Informational.</remark>
  </revision>
  <revision>
    <version>0.1</version>
    <date>2002-12-05</date>
    <initials>rn</initials>
    <remark>Initial version.</remark>
  </revision>
</header>

<section1 topic='Introduction'>
  <p>This document defines a module for &xep0062; that provides an XPath matching condition for packet filtering.</p>

  <p>This module operates in the "http://jabber.org/protocol/filter/xpath" namespace.</p>
</section1>

<section1 topic='Conditions'>
  <p>This module defines the fullowing conditions:</p>

  <ul>
    <li>&lt;xpath/> - true if the XPath expression contained in the CDATA of this element, when applied to the packet, returns one or more nodes.</li>
  </ul>

  <example caption='Matches all messages with that have a subject element'><![CDATA[
<xpath xmlns='http://jabber.org/protocol/filter/xpath'>/message/subject</xpath>
]]></example>

  <example caption='Matches all presence packets that have an x:delay stamp'><![CDATA[
<xpath xmlns='http://jabber.org/protocol/filter/xpath'>/presence/x[namespace-uri()=='jabber:x:delay']</xpath>
]]></example>

</section1>

<section1 topic='Security Considerations'>
  <p>There are no security features or concerns related to this proposal.</p>
</section1>

<section1 topic='IANA Considerations'>
  <p>This document requires no interaction with the IANA.</p>
</section1>

<section1 topic='JANA Considerations'>
  <p>No namespaces or parameters need to be registered with JANA as a result of this document.</p>
</section1>

</xep>