xml.xsd

   1 <?xml version='1.0'?>
   2 <?xml-stylesheet href="../2008/09/xsd.xsl" type="text/xsl"?>
   3 <xs:schema targetNamespace="http://www.w3.org/XML/1998/namespace"
   4   xmlns:xs="http://www.w3.org/2001/XMLSchema"
   5   xmlns   ="http://www.w3.org/1999/xhtml"
   6   xml:lang="en">
   7
   8  <xs:annotation>
   9   <xs:documentation>
  10    <div>
  11     <h1>About the XML namespace</h1>
  12
  13     <div class="bodytext">
  14      <p>
  15       This schema document describes the XML namespace, in a form
  16       suitable for import by other schema documents.
  17      </p>
  18      <p>
  19       See <a href="http://www.w3.org/XML/1998/namespace.html">
  20       http://www.w3.org/XML/1998/namespace.html</a> and
  21       <a href="http://www.w3.org/TR/REC-xml">
  22       http://www.w3.org/TR/REC-xml</a> for information
  23       about this namespace.
  24      </p>
  25      <p>
  26       Note that local names in this namespace are intended to be
  27       defined only by the World Wide Web Consortium or its subgroups.
  28       The names currently defined in this namespace are listed below.
  29       They should not be used with conflicting semantics by any Working
  30       Group, specification, or document instance.
  31      </p>
  32      <p>
  33       See further below in this document for more information about <a
  34       href="#usage">how to refer to this schema document from your own
  35       XSD schema documents</a> and about <a href="#nsversioning">the
  36       namespace-versioning policy governing this schema document</a>.
  37      </p>
  38     </div>
  39    </div>
  40   </xs:documentation>
  41  </xs:annotation>
  42
  43  <xs:attribute name="lang">
  44   <xs:annotation>
  45    <xs:documentation>
  46     <div>
  47
  48       <h3>lang (as an attribute name)</h3>
  49       <p>
  50        denotes an attribute whose value
  51        is a language code for the natural language of the content of
  52        any element; its value is inherited.  This name is reserved
  53        by virtue of its definition in the XML specification.</p>
  54
  55     </div>
  56     <div>
  57      <h4>Notes</h4>
  58      <p>
  59       Attempting to install the relevant ISO 2- and 3-letter
  60       codes as the enumerated possible values is probably never
  61       going to be a realistic possibility.
  62      </p>
  63      <p>
  64       See BCP 47 at <a href="http://www.rfc-editor.org/rfc/bcp/bcp47.txt">
  65        http://www.rfc-editor.org/rfc/bcp/bcp47.txt</a>
  66       and the IANA language subtag registry at
  67       <a href="http://www.iana.org/assignments/language-subtag-registry">
  68        http://www.iana.org/assignments/language-subtag-registry</a>
  69       for further information.
  70      </p>
  71      <p>
  72       The union allows for the 'un-declaration' of xml:lang with
  73       the empty string.
  74      </p>
  75     </div>
  76    </xs:documentation>
  77   </xs:annotation>
  78   <xs:simpleType>
  79    <xs:union memberTypes="xs:language">
  80     <xs:simpleType>
  81      <xs:restriction base="xs:string">
  82       <xs:enumeration value=""/>
  83      </xs:restriction>
  84     </xs:simpleType>
  85    </xs:union>
  86   </xs:simpleType>
  87  </xs:attribute>
  88
  89  <xs:attribute name="space">
  90   <xs:annotation>
  91    <xs:documentation>
  92     <div>
  93
  94       <h3>space (as an attribute name)</h3>
  95       <p>
  96        denotes an attribute whose
  97        value is a keyword indicating what whitespace processing
  98        discipline is intended for the content of the element; its
  99        value is inherited.  This name is reserved by virtue of its
 100        definition in the XML specification.</p>
 101
 102     </div>
 103    </xs:documentation>
 104   </xs:annotation>
 105   <xs:simpleType>
 106    <xs:restriction base="xs:NCName">
 107     <xs:enumeration value="default"/>
 108     <xs:enumeration value="preserve"/>
 109    </xs:restriction>
 110   </xs:simpleType>
 111  </xs:attribute>
 112
 113  <xs:attribute name="base" type="xs:anyURI"> <xs:annotation>
 114    <xs:documentation>
 115     <div>
 116
 117       <h3>base (as an attribute name)</h3>
 118       <p>
 119        denotes an attribute whose value
 120        provides a URI to be used as the base for interpreting any
 121        relative URIs in the scope of the element on which it
 122        appears; its value is inherited.  This name is reserved
 123        by virtue of its definition in the XML Base specification.</p>
 124
 125      <p>
 126       See <a
 127       href="http://www.w3.org/TR/xmlbase/">http://www.w3.org/TR/xmlbase/</a>
 128       for information about this attribute.
 129      </p>
 130     </div>
 131    </xs:documentation>
 132   </xs:annotation>
 133  </xs:attribute>
 134
 135  <xs:attribute name="id" type="xs:ID">
 136   <xs:annotation>
 137    <xs:documentation>
 138     <div>
 139
 140       <h3>id (as an attribute name)</h3>
 141       <p>
 142        denotes an attribute whose value
 143        should be interpreted as if declared to be of type ID.
 144        This name is reserved by virtue of its definition in the
 145        xml:id specification.</p>
 146
 147      <p>
 148       See <a
 149       href="http://www.w3.org/TR/xml-id/">http://www.w3.org/TR/xml-id/</a>
 150       for information about this attribute.
 151      </p>
 152     </div>
 153    </xs:documentation>
 154   </xs:annotation>
 155  </xs:attribute>
 156
 157  <xs:attributeGroup name="specialAttrs">
 158   <xs:attribute ref="xml:base"/>
 159   <xs:attribute ref="xml:lang"/>
 160   <xs:attribute ref="xml:space"/>
 161   <xs:attribute ref="xml:id"/>
 162  </xs:attributeGroup>
 163
 164  <xs:annotation>
 165   <xs:documentation>
 166    <div>
 167
 168     <h3>Father (in any context at all)</h3>
 169
 170     <div class="bodytext">
 171      <p>
 172       denotes Jon Bosak, the chair of
 173       the original XML Working Group.  This name is reserved by
 174       the following decision of the W3C XML Plenary and
 175       XML Coordination groups:
 176      </p>
 177      <blockquote>
 178        <p>
 179         In appreciation for his vision, leadership and
 180         dedication the W3C XML Plenary on this 10th day of
 181         February, 2000, reserves for Jon Bosak in perpetuity
 182         the XML name "xml:Father".
 183        </p>
 184      </blockquote>
 185     </div>
 186    </div>
 187   </xs:documentation>
 188  </xs:annotation>
 189
 190  <xs:annotation>
 191   <xs:documentation>
 192    <div xml:id="usage" id="usage">
 193     <h2><a name="usage">About this schema document</a></h2>
 194
 195     <div class="bodytext">
 196      <p>
 197       This schema defines attributes and an attribute group suitable
 198       for use by schemas wishing to allow <code>xml:base</code>,
 199       <code>xml:lang</code>, <code>xml:space</code> or
 200       <code>xml:id</code> attributes on elements they define.
 201      </p>
 202      <p>
 203       To enable this, such a schema must import this schema for
 204       the XML namespace, e.g. as follows:
 205      </p>
 206      <pre>
 207           &lt;schema . . .>
 208            . . .
 209            &lt;import namespace="http://www.w3.org/XML/1998/namespace"
 210                       schemaLocation="http://www.w3.org/2001/xml.xsd"/>
 211      </pre>
 212      <p>
 213       or
 214      </p>
 215      <pre>
 216            &lt;import namespace="http://www.w3.org/XML/1998/namespace"
 217                       schemaLocation="http://www.w3.org/2009/01/xml.xsd"/>
 218      </pre>
 219      <p>
 220       Subsequently, qualified reference to any of the attributes or the
 221       group defined below will have the desired effect, e.g.
 222      </p>
 223      <pre>
 224           &lt;type . . .>
 225            . . .
 226            &lt;attributeGroup ref="xml:specialAttrs"/>
 227      </pre>
 228      <p>
 229       will define a type which will schema-validate an instance element
 230       with any of those attributes.
 231      </p>
 232     </div>
 233    </div>
 234   </xs:documentation>
 235  </xs:annotation>
 236
 237  <xs:annotation>
 238   <xs:documentation>
 239    <div id="nsversioning" xml:id="nsversioning">
 240     <h2><a name="nsversioning">Versioning policy for this schema document</a></h2>
 241     <div class="bodytext">
 242      <p>
 243       In keeping with the XML Schema WG's standard versioning
 244       policy, this schema document will persist at
 245       <a href="http://www.w3.org/2009/01/xml.xsd">
 246        http://www.w3.org/2009/01/xml.xsd</a>.
 247      </p>
 248      <p>
 249       At the date of issue it can also be found at
 250       <a href="http://www.w3.org/2001/xml.xsd">
 251        http://www.w3.org/2001/xml.xsd</a>.
 252      </p>
 253      <p>
 254       The schema document at that URI may however change in the future,
 255       in order to remain compatible with the latest version of XML
 256       Schema itself, or with the XML namespace itself.  In other words,
 257       if the XML Schema or XML namespaces change, the version of this
 258       document at <a href="http://www.w3.org/2001/xml.xsd">
 259        http://www.w3.org/2001/xml.xsd
 260       </a>
 261       will change accordingly; the version at
 262       <a href="http://www.w3.org/2009/01/xml.xsd">
 263        http://www.w3.org/2009/01/xml.xsd
 264       </a>
 265       will not change.
 266      </p>
 267      <p>
 268       Previous dated (and unchanging) versions of this schema
 269       document are at:
 270      </p>
 271      <ul>
 272       <li><a href="http://www.w3.org/2009/01/xml.xsd">
 273         http://www.w3.org/2009/01/xml.xsd</a></li>
 274       <li><a href="http://www.w3.org/2007/08/xml.xsd">
 275         http://www.w3.org/2007/08/xml.xsd</a></li>
 276       <li><a href="http://www.w3.org/2004/10/xml.xsd">
 277         http://www.w3.org/2004/10/xml.xsd</a></li>
 278       <li><a href="http://www.w3.org/2001/03/xml.xsd">
 279         http://www.w3.org/2001/03/xml.xsd</a></li>
 280      </ul>
 281     </div>
 282    </div>
 283   </xs:documentation>
 284  </xs:annotation>
 285
 286 </xs:schema>
 287