[Summary view] [Print] [Text view]

   1  <?xml version="1.0" encoding="UTF-8"?>
   2  <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.w3.org/XML/1998/namespace" xml:lang="en">
   3  
   4   <xs:annotation>
   5    <xs:documentation>
   6     See http://www.w3.org/XML/1998/namespace.html and
   7     http://www.w3.org/TR/REC-xml for information about this namespace.
   8  
   9      This schema document describes the XML namespace, in a form
  10      suitable for import by other schema documents.  
  11  
  12      Note that local names in this namespace are intended to be defined
  13      only by the World Wide Web Consortium or its subgroups.  The
  14      following names are currently defined in this namespace and should
  15      not be used with conflicting semantics by any Working Group,
  16      specification, or document instance:
  17  
  18      base (as an attribute name): denotes an attribute whose value
  19           provides a URI to be used as the base for interpreting any
  20           relative URIs in the scope of the element on which it
  21           appears; its value is inherited.  This name is reserved
  22           by virtue of its definition in the XML Base specification.
  23  
  24      id   (as an attribute name): denotes an attribute whose value
  25           should be interpreted as if declared to be of type ID.
  26           This name is reserved by virtue of its definition in the
  27           xml:id specification.
  28  
  29      lang (as an attribute name): denotes an attribute whose value
  30           is a language code for the natural language of the content of
  31           any element; its value is inherited.  This name is reserved
  32           by virtue of its definition in the XML specification.
  33    
  34      space (as an attribute name): denotes an attribute whose
  35           value is a keyword indicating what whitespace processing
  36           discipline is intended for the content of the element; its
  37           value is inherited.  This name is reserved by virtue of its
  38           definition in the XML specification.
  39  
  40      Father (in any context at all): denotes Jon Bosak, the chair of 
  41           the original XML Working Group.  This name is reserved by 
  42           the following decision of the W3C XML Plenary and 
  43           XML Coordination groups:
  44  
  45               In appreciation for his vision, leadership and dedication
  46               the W3C XML Plenary on this 10th day of February, 2000
  47               reserves for Jon Bosak in perpetuity the XML name
  48               xml:Father
  49    </xs:documentation>
  50   </xs:annotation>
  51  
  52   <xs:annotation>
  53    <xs:documentation>This schema defines attributes and an attribute group
  54          suitable for use by
  55          schemas wishing to allow xml:base, xml:lang, xml:space or xml:id
  56          attributes on elements they define.
  57  
  58          To enable this, such a schema must import this schema
  59          for the XML namespace, e.g. as follows:
  60          &lt;schema . . .&gt;
  61           . . .
  62           &lt;import namespace="http://www.w3.org/XML/1998/namespace"
  63                      schemaLocation="http://www.w3.org/2001/xml.xsd"/&gt;
  64  
  65          Subsequently, qualified reference to any of the attributes
  66          or the group defined below will have the desired effect, e.g.
  67  
  68          &lt;type . . .&gt;
  69           . . .
  70           &lt;attributeGroup ref="xml:specialAttrs"/&gt;
  71   
  72           will define a type which will schema-validate an instance
  73           element with any of those attributes</xs:documentation>
  74   </xs:annotation>
  75  
  76   <xs:annotation>
  77    <xs:documentation>In keeping with the XML Schema WG's standard versioning
  78     policy, this schema document will persist at
  79     http://www.w3.org/2007/08/xml.xsd.
  80     At the date of issue it can also be found at
  81     http://www.w3.org/2001/xml.xsd.
  82     The schema document at that URI may however change in the future,
  83     in order to remain compatible with the latest version of XML Schema
  84     itself, or with the XML namespace itself.  In other words, if the XML
  85     Schema or XML namespaces change, the version of this document at
  86     http://www.w3.org/2001/xml.xsd will change
  87     accordingly; the version at
  88     http://www.w3.org/2007/08/xml.xsd will not change.
  89    </xs:documentation>
  90   </xs:annotation>
  91  
  92   <xs:attribute name="lang">
  93    <xs:annotation>
  94     <xs:documentation>Attempting to install the relevant ISO 2- and 3-letter
  95           codes as the enumerated possible values is probably never
  96           going to be a realistic possibility.  See
  97           RFC 3066 at http://www.ietf.org/rfc/rfc3066.txt and the IANA registry
  98           at http://www.iana.org/assignments/lang-tag-apps.htm for
  99           further information.
 100  
 101           The union allows for the 'un-declaration' of xml:lang with
 102           the empty string.</xs:documentation>
 103    </xs:annotation>
 104    <xs:simpleType>
 105     <xs:union memberTypes="xs:token">
 106      <xs:simpleType>    
 107       <xs:restriction base="xs:string">
 108        <xs:enumeration value="" />
 109       </xs:restriction>
 110      </xs:simpleType>
 111     </xs:union>
 112    </xs:simpleType>
 113   </xs:attribute>
 114  
 115   <xs:attribute name="space">
 116    <xs:simpleType>
 117     <xs:restriction base="xs:NCName">
 118      <xs:enumeration value="default" />
 119      <xs:enumeration value="preserve" />
 120     </xs:restriction>
 121    </xs:simpleType>
 122   </xs:attribute>
 123  
 124   <xs:attribute name="base" type="xs:anyURI">
 125    <xs:annotation>
 126     <xs:documentation>See http://www.w3.org/TR/xmlbase/ for
 127                       information about this attribute.</xs:documentation>
 128    </xs:annotation>
 129   </xs:attribute>
 130   
 131   <xs:attribute name="id" type="xs:ID">
 132    <xs:annotation>
 133     <xs:documentation>See http://www.w3.org/TR/xml-id/ for
 134                       information about this attribute.</xs:documentation>
 135    </xs:annotation>
 136   </xs:attribute>
 137  
 138   <xs:attributeGroup name="specialAttrs">
 139    <xs:attribute ref="xml:base" />
 140    <xs:attribute ref="xml:lang" />
 141    <xs:attribute ref="xml:space" />
 142    <xs:attribute ref="xml:id" />
 143   </xs:attributeGroup>
 144  
 145  </xs:schema>