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  <title>Protocol for Web Description Resources (POWDER): Web Description Resources Datatypes (WDRD)</title>
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<a href="http://www.w3.org/"><img height="48" width="72" alt="W3C" src="http://www.w3.org/Icons/w3c_home"/></a>
<h1>Protocol for Web Description Resources (POWDER): Web Description Resources Datatypes (WDRD)</h1>
<h2>W3C Working Draft Draft 25 September 2007</h2>
<dl>
  <dt>This version</dt><dd><a href="http://www.w3.org/TR/2007/WD-powder-xsd-20070925/">http://www.w3.org/TR/2007/WD-powder-xsd-20070925/</a></dd>
  <dt>Latest version</dt><dd><a href="http://www.w3.org/TR/powder-xsd/">http://www.w3.org/TR/powder-xsd/</a></dd>
</dl>
<dl>
<dt>Editors:</dt>
  <dd>Andrea Perego, Universit&agrave; degli Studi dell'Insubria</dd>
  <dd>Phil Archer, Family Online Safety Institute</dd>
  <dd>Kevin Smith, Vodafone Group R &amp; D</dd>
</dl>
<p>
This document is also available as a non-normative <a href="http://www.w3.org/TR/powder-xsd/xsd">XML Schema</a>.
</p>
<p class="copyright"><a href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a> &copy; 2007 <a href="http://www.w3.org/"><acronym title="World Wide Web Consortium">W3C</acronym></a><sup>&reg;</sup> (<a href="http://www.csail.mit.edu/"><acronym title="Massachusetts Institute of Technology">MIT</acronym></a>, <a href="http://www.ercim.org/"><acronym title="European Research Consortium for Informatics and Mathematics">ERCIM</acronym></a>, <a href="http://www.keio.ac.jp/">Keio</a>), All Rights Reserved. W3C <a href="http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">liability</a>, <a href="http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">trademark</a> and <a href="http://www.w3.org/Consortium/Legal/copyright-documents">document use</a> rules apply.</p>
<hr />
</div>
<h2 id="abstract">Abstract</h2>
<p>This is the namespace document for the XML schema used in the Protocol for Web Description resources (POWDER). It defines the datatypes used and the structure for Description Resources where these are serialized in XML.</p>
<h2 id="status">Status of this document</h2>
<p><em>This section describes the status of this document at the time of its publication. Other documents may supersede this document. A list of current W3C publications and the latest revision of this technical report can be found in the <a href="http://www.w3.org/TR/" shape="rect">W3C technical reports index</a> at http://www.w3.org/TR/.</em></p>

<p>This is a <a href="http://www.w3.org/2005/10/Process-20051014/tr.html#first-wd">first public working draft</a> which allows other POWDER documents
to reference it (with due caution) and for the working group to solicit feedback. It is not appropriate for other documents to reference this one
until it reaches a greater level of maturity. Feedback is particularly welcome on whether the regular expressions used to restrict each data type
are the most appropriate. There is a place holder for a definition of the complex type of Description Resource.</p>

<p>This document was developed by the <a href="http://www.w3.org/2007/powder/" shape="rect">POWDER Working Group</a> which expects to publish
updates throughout the remainder of its <a href="http://www.w3.org/2007/02/powder_charter">charter</a>.</p>

<p>Please send comments about this document to public-powderwg@w3.org (with <a href="http://lists.w3.org/Archives/Public/public-powderwg/" shape="rect">public archive</a>).</p>
<p>Publication as a Working Draft does not imply endorsement by the W3C Membership. This is a draft document and may be updated, replaced or obsoleted by other documents at any time. It is inappropriate to cite this document as other than work in progress.</p>
<p> This document was produced by a group operating under the <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/">5 February 2004 W3C Patent Policy</a>. W3C maintains a <a rel="disclosure" href="http://www.w3.org/2004/01/pp-impl/40243/status">public list of any patent disclosures</a> made in connection with the deliverables of the group; that page also includes instructions for disclosing a patent. An individual who has actual knowledge of a patent which the individual believes contains <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/#def-essential">Essential Claim(s)</a> must disclose the information in accordance with <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/#sec-Disclosure">section 6 of the W3C Patent Policy</a>. </p>
<h2 id="toc">Table of Contents</h2>
<dl>
<dt><a href="#intro">Introduction</a></dt>
<dt><a href="#xsd:simpleType">Simple Types</a></dt>
<dd>| <a href="#uriScheme">uriScheme</a> |
<a href="#uriUserInfo">uriUserInfo</a> |
<a href="#uriHost">uriHost</a> |
<a href="#uriPort">uriPort</a> |
<a href="#uriPath">uriPath</a> |
<a href="#uriQuery">uriQuery</a> |
<a href="#uriFragment">uriFragment</a> |
<a href="#uriPortRange">uriPortRange</a> |
<a href="#ip">ip</a> |
<a href="#cidr">cidr</a> |
<a href="#stringList">stringList</a> |
<a href="#uriList">uriList</a> |
<a href="#uriSchemeList">uriSchemeList</a> |
<a href="#uriUserInfoList">uriUserInfoList</a> |
<a href="#uriHostList">uriHostList</a> |
<a href="#uriPortList">uriPortList</a> |
<a href="#uriPathList">uriPathList</a> |
<a href="#uriQueryList">uriQueryList</a> |
<a href="#uriFragmentList">uriFragmentList</a> |
<a href="#uriPortRangeList">uriPortRangeList</a> |
<a href="#ipList">ipList</a> |
<a href="#cidrList">cidrList</a> |
</dd>
<dt><a href="#complexTypes">Complex Types</a></dt>
<dd><a href="#drComplexType">Description Resource</a></dd>
<dt><a href="#ack">Acknowledgements</a></dt>
<dt><a href="#references">References</a></dt>
</dl>
<div class="content">
<h2 id="intro">Introduction</h2>
<p>This is the namespace document for the XML schema used in the Protocol for Web Description resources (POWDER). It provides a human-readable
summary of the <a href="http://www.w3.org/TR/powder-xsd/xsd">XML Schema</a> itself.</p>
<p>A series of simple (atomic) datatypes is defined, followed by a list of datatypes derived from them. These are used as the range of the various
RDF properties defined in POWDER: Grouping of Resources [<a href="#group">GROUP</a>].</p>
<p>The Description Resource complex type is provided to facilitate quick validation of a DR, when serialized in XML, before full semantic
processing in an RDF environment. Description Resources themselves are defined separately [<a href="#dr">DR</a>].</p>


<div class="edNote">
<p>For each atomic type we have defined a pattern restriction (i.e. a regular expression). For those data types that refer to
URI components, these are, of course, conformant with <a href="http://tools.ietf.org/html/rfc3986">RFC3986</a>. Appendix B of that
RFC provides a regular expression that is useful in splitting up a URI into its components:</p>

<blockquote>
<pre>
^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?
 12            3  4          5       6  7        8 9
</pre>
</blockquote>

<p>However, matching against this regular expression is not necessarily the same as validating a component once it has been
separated from the URI. In some cases therefore we define our own pattern that we believe is more useful as a validation tool.
White space is excluded from all atomic data types except <code>response</code>.</p>

<p>The group is particularly keen to receive feedback on whether we have chosen wisely and whether there are better patterns
for validating URI components.</p>
</div>

<h2 id="xsd:simpleType">Simple Types</h2>
<h3 id="uriScheme">uriScheme</h3>
<div class="spec">
<p>Atomic Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriScheme</code></p>
<p>Base: <a href="http://www.w3.org/TR/xmlschema-2/#string"><code>xsd:string</code></a></p>
<p>Pattern value restriction: <code>[a-zA-Z]+[a-zA-Z0-9\+\-\.]*</code></p>
</div>
<p>The datatype denoting a string corresponding to the scheme component of a URI.</p>

<h3 id="uriUserInfo">uriUserInfo</h3>
<div class="spec">
<p>Atomic Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriUserInfo</code></p>
<p>Base: <a href="http://www.w3.org/TR/xmlschema-2/#string"><code>xsd:string</code></a></p>
<p>Pattern value restriction: <code>[^/?#@\s]+</code></p>
</div>
<p>The datatype denoting a string corresponding to the userInfo component of a URI.</p>

<h3 id="uriHost">uriHost</h3>
<div class="spec">
<p>Atomic Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriHost</code></p>
<p>Base: <a href="http://www.w3.org/TR/xmlschema-2/#string"><code>xsd:string</code></a></p>
<p>Pattern value restriction: <code>[^/?#@:\s]+</code></p>
</div>
<p>The datatype denoting a string corresponding to the host component of a URI.</p>
<h3 id="uriPort">uriPort</h3>
<div class="spec">
<p>Atomic Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriPort</code></p>
<p>Base: <a href="http://www.w3.org/TR/xmlschema-2/#string"><code>xsd:string</code></a></p>
<p>Pattern value restriction: <code>(\d{1}|[1-9]\d*)</code></p>
</div>
<p>The datatype denoting a string corresponding to the port component of a URI.</p>
<h3 id="uriPath">uriPath</h3>
<div class="spec">
<p>Atomic Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriPath</code></p>
<p>Base: <a href="http://www.w3.org/TR/xmlschema-2/#string"><code>xsd:string</code></a></p>
<p>Pattern value restriction: <code>[^?#\s]+</code></p>
</div>
<p>The datatype denoting a string corresponding to the path component of a URI.</p>
<h3 id="uriQuery">uriQuery</h3>
<div class="spec">
<p>Atomic Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriQuery</code></p>
<p>Base: <a href="http://www.w3.org/TR/xmlschema-2/#string"><code>xsd:string</code></a></p>
<p>Pattern value restriction: <code>[^#\s]+</code></p>
</div>
<p>The datatype denoting a string corresponding to the query component of a URI.</p>
<h3 id="uriFragment">uriFragment</h3>
<div class="spec">
<p>Atomic Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriFragment</code></p>
<p>Base: <a href="http://www.w3.org/TR/xmlschema-2/#string"><code>xsd:string</code></a></p>
<p>Pattern value restriction: <code>[^#\s]+</code></p>
</div>
<p>The datatype denoting a string corresponding to the fragment component of a URI.</p>
<h3 id="uriPortRange">uriPortRange</h3>
<div class="spec">
<p>Atomic Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriPortRange</code></p>
<p>Base: <a href="http://www.w3.org/TR/xmlschema-2/#string"><code>xsd:string</code></a></p>
<p>Pattern value restriction: <code>(\d{1}|[1-9]\d*)\-(\d{1}|[1-9]\d*)</code></p>
</div>
<p>The datatype denoting a string corresponding to a range of logical ports.</p>

<p class="edNote">The regular expressions used in the following two data types are provisional. The group would welcome feedback on this, particularly on developing a regular expression for an IPv6 address.</p>

<h3 id="ip">ip</h3>
<div class="spec">
<p>Atomic Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:ip</code></p>
<p>Base: <a href="http://www.w3.org/TR/xmlschema-2/#string"><code>xsd:string</code></a></p>
<p>Pattern value restriction: <code>(((([1-9]?\d|1\d{2}|2[0-4]\d|25[0-5])\.){3}([1-9]?\d|1\d{2}|2[0-4]\d|25[0-5]))|((([\da-fA-F]{1,4})|(\:))\:){7}(([\da-fA-F]{1,4})|(\:))))</code></p>
</div>
<p>The datatype denoting a string corresponding to a IPv4 or IPv6 address.</p>

<h3 id="cidr">cidr</h3>
<div class="spec">
<p>Atomic Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:cidr</code></p>
<p>Base: <a href="http://www.w3.org/TR/xmlschema-2/#string"><code>xsd:string</code></a></p>
<p>Pattern value restriction: <code>(((([1-9]?\d|1\d{2}|2[0-4]\d|25[0-5])\.){3}([1-9]?\d|1\d{2}|2[0-4]\d|25[0-5])\/(\d|[1-2]\d|3[0-2]))|((([\da-fA-F]{0,4})|(\:))\:){7}(([\da-fA-F]{0,4})|(\:)))\/([1-9]?\d|1[01]\d|12[0-8])))</code></p>
</div>

<h3 id="stringList">stringList</h3>
<div class="spec">
<p>List Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:stringList</code></p>
<p>Item: <a href="http://www.w3.org/TR/xmlschema-2/#string"><code>xsd:string</code></a></p>
</div>
<p>The datatype denoting a space-separated list of strings. This is used  for POWDER vocabulary properties having as range a space-separated list of generic strings.</p>

<h3 id="uriList">uriList</h3>
<div class="spec">
<p>List Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriList</code></p>
<p>Item: <a href="http://www.w3.org/TR/xmlschema-2/#anyURI"><code>xsd:anyURI</code></a></p>
</div>
<p>The datatype denoting a space-separated list of URIs.</p>
<h3 id="uriSchemeList">uriSchemeList</h3>
<div class="spec">
<p>List Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriSchemeList</code></p>
<p>Item: <a href="#uriScheme"><code>wdrd:uriScheme</code></a></p>
<p>Range datatype for <code><a href="http://www.w3.org/TR/powder-voc/#includeSchemes">wdr:includeSchemes</a> <a href="http://www.w3.org/TR/powder-voc/#excludeSchemes">wdr:excludeSchemes</a></code></p>
</div>
<p>The datatype denoting a space-separated list of URI schemes.</p>
<h3 id="uriUserInfoList">uriUserInfoList</h3>
<div class="spec">
<p>List Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriUserInfoList</code></p>
<p>Item: <a href="#uriUserInfo"><code>wdrd:uriUserInfo</code></a></p>
<p>Range datatype for <code><a href="http://www.w3.org/TR/powder-voc/#includeUsers">wdr:includeUsers</a> <a href="http://www.w3.org/TR/powder-voc/#excludeUsers">wdr:excludeUsers</a></code></p>
</div>
<p>The datatype denoting a space-separated list of URI userInfos.</p>
<h3 id="uriHostList">uriHostList</h3>
<div class="spec">
<p>List Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriHostList</code></p>
<p>Item: <a href="#uriHost"><code>wdrd:uriHost</code></a></p>
<p>Range datatype for <code><a href="http://www.w3.org/TR/powder-voc/#includeHosts">wdr:includeHosts</a> <a href="http://www.w3.org/TR/powder-voc/#excludeHosts">wdr:excludeHosts</a></code></p>
</div>
<p>The datatype denoting a space-separated list of URI hosts.</p>
<h3 id="uriPortList">uriPortList</h3>
<div class="spec">
<p>List Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriPortList</code></p>
<p>Item: <a href="#uriPort"><code>wdrd:uriPort</code></a></p>
<p>Range datatype for <code><a href="http://www.w3.org/TR/powder-voc/#includePorts">wdr:includePorts</a> <a href="http://www.w3.org/TR/powder-voc/#excludePorts">wdr:excludePorts</a></code></p>
</div>
<p>The datatype denoting a space-separated list of URI ports.</p>
<h3 id="uriPathList">uriPathList</h3>
<div class="spec">
<p>List Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriPathList</code></p>
<p>Item: <a href="#uriPath"><code>wdrd:uriPath</code></a></p>
<p>Range datatype for <code><a href="http://www.w3.org/TR/powder-voc/#includeExactPaths">wdr:includeExactPaths</a> <a href="http://www.w3.org/TR/powder-voc/#excludeExactPaths">wdr:excludeExactPaths</a> <a href="http://www.w3.org/TR/powder-voc/#includePathContains">wdr:includePathContains</a> <a href="http://www.w3.org/TR/powder-voc/#excludePathContains">wdr:excludePathContains</a> <a href="http://www.w3.org/TR/powder-voc/#includePathStartsWith">wdr:includePathStartsWith</a> <a href="http://www.w3.org/TR/powder-voc/#excludePathStartsWith">wdr:excludePathStartsWith</a> <a href="http://www.w3.org/TR/powder-voc/#includePathEndsWith">wdr:includePathEndsWith</a> <a href="http://www.w3.org/TR/powder-voc/#excludePathEndsWith">wdr:excludePathEndsWith</a></code></p>
</div>
<p>The datatype denoting a space-separated list of URI paths.</p>
<h3 id="uriQueryList">uriQueryList</h3>
<div class="spec">
<p>List Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriQueryList</code></p>
<p>Item: <a href="#uriQuery"><code>wdrd:uriQuery</code></a></p>
<p>Range datatype for <code><a href="http://www.w3.org/TR/powder-voc/#includeExactQueries">wdr:includeExactQueries</a> <a href="http://www.w3.org/TR/powder-voc/#excludeExactQueries">wdr:excludeExactQueries</a> <a href="http://www.w3.org/TR/powder-voc/#includeQueryContains">wdr:includeQueryContains</a> <a href="http://www.w3.org/TR/powder-voc/#excludeQueryContains">wdr:excludeQueryContains</a></code></p>
</div>
<p>The datatype denoting a space-separated list of URI queries.</p>
<h3 id="uriFragmentList">uriFragmentList</h3>
<div class="spec">
<p>List Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriFragmentList</code></p>
<p>Item: <a href="#uriFragment"><code>wdrd:uriFragment</code></a></p>
<p>Range datatype for <code><a href="http://www.w3.org/TR/powder-voc/#includeFragments">wdr:includeFragments</a> <a href="http://www.w3.org/TR/powder-voc/#excludeFragments">wdr:excludeFragments</a></code></p>
</div>
<p>The datatype denoting a space-separated list of URI fragments.</p>
<h3 id="uriPortRangeList">uriPortRangeList</h3>
<div class="spec">
<p>List Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:uriPortRangeList</code></p>
<p>Item: <a href="#uriPortRange"><code>wdrd:uriPortRange</code></a></p>
<p>Range datatype for <code><a href="http://www.w3.org/TR/powder-voc/#includePortRanges">wdr:includeRanges</a> <a href="http://www.w3.org/TR/powder-voc/#excludePortRanges">wdr:excludePortRanges</a></code></p>
</div>
<p>The datatype denoting a space-separated list of logical port ranges.</p>
<h3 id="ipList">ipList</h3>
<div class="spec">
<p>List Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:ipList</code></p>
<p>Item: <a href="#ip"><code>wdrd:ip</code></a></p>
<p>Range datatype for <code><a href="http://www.w3.org/TR/powder-voc/#includeIPs">wdr:includeIPs</a> <a href="http://www.w3.org/TR/powder-voc/#excludeIPs">wdr:excludeIPs</a></code></p>
</div>
<p>The datatype denoting a space-separated list of IP addresses.</p>
<h3 id="cidrList">cidrList</h3>
<div class="spec">
<p>List Datatype</p>
<p>Type: <code>xsd:simpleType</code></p>
<p>Name: <code>wdrd:cidrList</code></p>
<p>Item: <a href="#cidr"><code>wdrd:cidr</code></a></p>
<p>Range datatype for <code><a href="http://www.w3.org/TR/powder-voc/#includeIpRanges">wdr:includeIpRanges</a> <a href="http://www.w3.org/TR/powder-voc/#excludeIpRanges">wdr:excludeIpRanges</a></code></p>
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<p>The datatype denoting a space-separated list of CIDR blocks.</p>

<h2 id="complexTypes">Complex Types</h2>
<h3 id="drComplexType">Description Resource</h3>
<p class="edNote">A complex type will defined for easy validation of a Description Resource when serialized in XML.</p>
<h2 id="ack">Acknowledgements</h2>
<p>The editors duly acknowledge contributions made by all members of the POWDER Working Group.</p>
<h2 id="references">References</h2>
<dl>
  <dt><a id="group" name="group">[GROUP]</a></dt>
  <dd><cite><a href="http://www.w3.org/TR/powder-grouping/">Protocol for Web Description Resources (POWDER): Grouping of Resources</a></cite>, A Perego, P Archer. This document is at http://www.w3.org/TR/powder-grouping/</dd>
  <dt><a id="dr" name="dr">[DR]</a></dt>
  <dd><cite><a href="http://www.w3.org/TR/powder-dr/">Protocol for Web Description Resources (POWDER): Description Resources</a></cite>, K Smith, P Archer. This document is at http://www.w3.org/TR/powder-dr/</dd>
<!--  <dt><a id="rfc3986" name="rfc3986">[RFC3986]</a></dt>
  <dd><cite><a href="http://tools.ietf.org/html/rfc3986">Uniform Resource Identifier (URI): Generic Syntax</a></cite>, T. Berners-Lee, R. Fielding, L. Masinter. This document is at http://tools.ietf.org/html/rfc3986</dd> -->
</dl>

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