mirror of
https://github.com/moparisthebest/xeps
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136 lines
4.7 KiB
XML
136 lines
4.7 KiB
XML
<?xml version='1.0' encoding='UTF-8'?>
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<!DOCTYPE xep SYSTEM 'xep.dtd' [
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<!ENTITY % ents SYSTEM 'xep.ent'>
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%ents;
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]>
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<?xml-stylesheet type='text/xsl' href='xep.xsl'?>
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<xep>
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<header>
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<title>Data Forms XML Element</title>
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<abstract>This specification defines an XMPP protocol extension for including XML-data in XEP-0004 data forms.</abstract>
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&LEGALNOTICE;
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<number>0315</number>
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<status>Deferred</status>
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<type>Standards Track</type>
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<sig>Standards</sig>
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<dependencies>
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<spec>XMPP Core</spec>
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<spec>XEP-0004</spec>
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</dependencies>
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<supersedes/>
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<supersededby/>
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<shortname>media-element</shortname>
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<author>
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<firstname>Sergey</firstname>
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<surname>Dobrov</surname>
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<email>binary@jrudevels.org</email>
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<jid>binary@jrudevels.org</jid>
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<uri>http://jrudevels.org/</uri>
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</author>
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<revision>
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<version>0.1</version>
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<date>2012-10-15</date>
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<initials>psa</initials>
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<remark><p>Initial published version approved for publication by the XMPP Council.</p></remark>
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</revision>
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<revision>
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<version>0.0.2</version>
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<date>2012-06-21</date>
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<initials>snd</initials>
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<remark><p>Root element name changed to "wrapper"; xmlns fixed in the XML-schema.</p></remark>
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</revision>
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<revision>
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<version>0.0.1</version>
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<date>2012-06-13</date>
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<initials>snd</initials>
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<remark><p>Initial version.</p></remark>
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</revision>
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</header>
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<section1 topic='Introduction' anchor='intro'>
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<p>In certain protocols that make use of &xep0004;, it can be helpful to include XML-data (for example, when we want to insert a big amount of structured data which is hard to insert as a separate fields). This document defines a method for including XML-data in a data form.</p>
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</section1>
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<section1 topic='Media Element' anchor='media'>
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<p>The root element for XML-data is <wrapper/>. This element MUST be qualified by the "urn:xmpp:xml-element" namespace. The <wrapper/> element MUST be contained within a <field/> element qualified by the 'jabber:x:data' namespace.</p>
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<p>The <wrapper/> element SHOULD contain an XML-data which needs to be represented in a form.</p>
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<example caption='PubSub Blog Node Metadata'><![CDATA[
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<wrapper xmlns='urn:xmpp:xml-element'>
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<feed xmlns='http://www.w3.org/2005/Atom'>
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<title>Romeo&apos;s Microblog</title>
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<id>tag:montague.lit,2008:home</id>
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<updated>2008-05-08T18:30:02Z</updated>
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<author>
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<name>Romeo Montague</name>
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<uri>xmpp:romeo@montague.lit</uri>
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</author>
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</feed>
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</wrapper>
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]]></example>
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<example caption='Inclusion in Data Form'><![CDATA[
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<x xmlns='jabber:x:data' type='form'>
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[ ... ]
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<field var='xml-metadata' type='hidden'>
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<wrapper xmlns='urn:xmpp:xml-element'>
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<feed xmlns='http://www.w3.org/2005/Atom'>
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<title>Romeo&apos;s Microblog</title>
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<id>tag:montague.lit,2008:home</id>
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<updated>2008-05-08T18:30:02Z</updated>
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<author>
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<name>Romeo Montague</name>
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<uri>xmpp:romeo@montague.lit</uri>
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</author>
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</feed>
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</wrapper>
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</field>
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[ ... ]
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</x>
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]]></example>
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</section1>
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<section1 topic="Usage Practices">
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<p>XML-data is usually hard for manual editing and SHOULD be used only for machine level iteractions. So it's RECOMMENDED to include it in the form as a "hidden" field.</p>
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<p>However, there are situations when human editing of XML-data may be useful (for example, to see XML-logs of some XMPP-service). In that case it's RECOMMENDED for a client to represent this XML in a pretty formatted form and give an instruments to make it easier to edit XML-data.</p>
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</section1>
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<section1 topic='IANA Considerations' anchor='iana'>
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<p>This document requires no interaction with &IANA;.</p>
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</section1>
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<section1 topic='XMPP Registrar Considerations' anchor='registrar'>
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<section2 topic='Protocol Namespaces' anchor='ns'>
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<p>The ®ISTRAR; includes "urn:xmpp:xml-element" in its registry of protocol namespaces (see &NAMESPACES;).</p>
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</section2>
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</section1>
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<section1 topic='XML Schema' anchor='schema'>
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<code><![CDATA[
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<?xml version='1.0' encoding='UTF-8'?>
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<xs:schema
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xmlns:xs='http://www.w3.org/2001/XMLSchema'
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targetNamespace='urn:xmpp:xml-element'
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xmlns='urn:xmpp:xml-element'
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elementFormDefault='qualified'>
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<xs:annotation>
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<xs:documentation>
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The protocol documented by this schema is defined in
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XEP-XXXX: http://www.xmpp.org/extensions/xep-xxxx.html
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</xs:documentation>
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</xs:annotation>
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<xs:element name='wrapper'>
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<xs:complexType>
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<xs:sequence>
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<xs:any minOccurs='0' maxOccurs='unbounded'/>
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</xs:sequence>
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</xs:complexType>
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</xs:element>
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</xs:schema>
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]]></code>
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</section1>
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</xep>
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