wfs.xsd

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                     <xsd:documentation>
                        The DefaultSRS element indicated which spatial
                        reference system shall be used by a WFS to
                        express the state of a spatial feature if not
                        otherwise explicitly identified within a query
                        or transaction request.  The SRS may be indicated
                        using either the EPSG form (EPSG:posc code) or
                        the URL form defined in subclause 4.3.2 of
                        refernce[2].
                     </xsd:documentation>
                  </xsd:annotation>
               </xsd:element>
               <xsd:element name="OtherSRS"
                            type="xsd:anyURI"
                            minOccurs="0" maxOccurs="unbounded">
                  <xsd:annotation>
                     <xsd:documentation>
                        The OtherSRS element is used to indicate other 
                        supported SRSs within query and transaction 
                        operations.  A supported SRS means that the 
                        WFS supports the transformation of spatial
                        properties between the OtherSRS and the internal
                        storage SRS.  The effects of such transformations 
                        must be considered when determining and declaring 
                        the guaranteed data accuracy.
                     </xsd:documentation>
                  </xsd:annotation>
               </xsd:element>
            </xsd:sequence>
            <xsd:element name="NoSRS">
              <xsd:complexType/>
            </xsd:element>
         </xsd:choice>
         <xsd:element name="Operations"
                      type="wfs:OperationsType"
                      minOccurs="0"/>
         <xsd:element name="OutputFormats"
                      type="wfs:OutputFormatListType"
                      minOccurs="0"/>
         <xsd:element ref="ows:WGS84BoundingBox" 
                      minOccurs="1" maxOccurs="unbounded"/>
         <xsd:element name="MetadataURL"
                      type="wfs:MetadataURLType"
                      minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="OperationsType">
      <xsd:sequence>
         <xsd:element name="Operation"
                      type="wfs:OperationType"
                      maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:simpleType name="OperationType">
      <xsd:restriction base="xsd:string">
         <xsd:enumeration value="Insert"/>
         <xsd:enumeration value="Update"/>
         <xsd:enumeration value="Delete"/>
         <xsd:enumeration value="Query"/>
         <xsd:enumeration value="Lock"/>
         <xsd:enumeration value="GetGmlObject"/>
      </xsd:restriction>
   </xsd:simpleType>
   <xsd:complexType name="OutputFormatListType">
      <xsd:sequence maxOccurs="unbounded">
         <xsd:element name="Format" type="xsd:string"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="MetadataURLType">
      <xsd:annotation>
         <xsd:documentation>
            A Web Feature Server MAY use zero or more MetadataURL
            elements to offer detailed, standardized metadata about
            the data underneath a particular feature type.  The type
            attribute indicates the standard to which the metadata
            complies; the format attribute indicates how the metadata is
            structured.  Two types are defined at present:
            'TC211' or 'ISO19115' = ISO TC211 19115; 
            'FGDC'                = FGDC CSDGM.
            'ISO19139'            = ISO 19139
         </xsd:documentation>
      </xsd:annotation>
      <xsd:simpleContent>
         <xsd:extension base="xsd:string">
            <xsd:attribute name="type" use="required">
               <xsd:simpleType>
                  <xsd:restriction base="xsd:string">
                     <xsd:enumeration value="TC211"/>
                     <xsd:enumeration value="FGDC"/>
                     <xsd:enumeration value="19115"/>
                     <xsd:enumeration value="19139"/>
                  </xsd:restriction>
               </xsd:simpleType>
            </xsd:attribute>
            <xsd:attribute name="format" use="required">
               <xsd:simpleType>
                  <xsd:restriction base="xsd:string">
                     <xsd:enumeration value="text/xml"/>
                     <xsd:enumeration value="text/html"/>
                     <xsd:enumeration value="text/sgml"/>
                     <xsd:enumeration value="text/plain"/>
                  </xsd:restriction>
               </xsd:simpleType>
            </xsd:attribute>
         </xsd:extension>
      </xsd:simpleContent>
   </xsd:complexType>
   <xsd:element name="ServesGMLObjectTypeList"
                type="wfs:GMLObjectTypeListType">
      <xsd:annotation>
         <xsd:documentation>
            List of GML Object types available for GetGmlObject requests
         </xsd:documentation>
      </xsd:annotation>
   </xsd:element>
   <xsd:element name="SupportsGMLObjectTypeList"
                type="wfs:GMLObjectTypeListType">
      <xsd:annotation>
         <xsd:documentation>
            List of GML Object types that WFS is capable of serving, either
            directly, or as validly derived types defined in a GML application
            schema.
         </xsd:documentation>
      </xsd:annotation>
   </xsd:element>
   <xsd:complexType name="GMLObjectTypeListType">
      <xsd:sequence>
         <xsd:element name="GMLObjectType" type="wfs:GMLObjectTypeType"
            maxOccurs="unbounded">
            <xsd:annotation>
               <xsd:documentation>
                  Name of this GML object type, including any namespace prefix
               </xsd:documentation>
            </xsd:annotation>
         </xsd:element>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="GMLObjectTypeType">
      <xsd:annotation>
         <xsd:documentation>
            An element of this type that describes a GML object in an
            application namespace shall have an xml xmlns specifier,
            e.g. xmlns:bo="http://www.BlueOx.org/BlueOx"
         </xsd:documentation>
      </xsd:annotation>
      <xsd:sequence>
         <xsd:element name="Name" type="xsd:QName">
            <xsd:annotation>
               <xsd:documentation>
                  Name of this GML Object type, including any namespace prefix.
               </xsd:documentation>
            </xsd:annotation>
         </xsd:element>
         <xsd:element name="Title" type="xsd:string" minOccurs="0">
            <xsd:annotation>
               <xsd:documentation>
                  Title of this GML Object type, normally used for display
                  to a human.
               </xsd:documentation>
            </xsd:annotation>
         </xsd:element>
         <xsd:element name="Abstract" type="xsd:string" minOccurs="0">
            <xsd:annotation>
               <xsd:documentation>
                  Brief narrative description of this GML Object type, normally
                  used for display to a human.
               </xsd:documentation>
            </xsd:annotation>
         </xsd:element>
         <xsd:element ref="ows:Keywords"
                      minOccurs="0" maxOccurs="unbounded"/>
         <xsd:element name="OutputFormats"
                      type="wfs:OutputFormatListType" minOccurs="0"/>
      </xsd:sequence>
   </xsd:complexType>

   <!-- ================================================================== -->
   <!-- =   DESCRIBEFEATURETYPE Request and Response                     = -->
   <!-- ================================================================== -->
   <!-- REQUEST -->
   <xsd:element name="DescribeFeatureType" type="wfs:DescribeFeatureTypeType">
      <xsd:annotation>
         <xsd:documentation>
            The DescribeFeatureType element is used to request that a Web
            Feature Service generate a document describing one or more 
            feature types.
         </xsd:documentation>
      </xsd:annotation>
   </xsd:element>
   <xsd:complexType name="DescribeFeatureTypeType">
      <xsd:annotation>
         <xsd:documentation>
            The DescribeFeatureType operation allows a client application
            to request that a Web Feature Service describe one or more
            feature types.   A Web Feature Service must be able to generate
            feature descriptions as valid GML3 application schemas.

            The schemas generated by the DescribeFeatureType operation can
            be used by a client application to validate the output.

            Feature instances within the WFS interface must be specified
            using GML3.  The schema of feature instances specified within
            the WFS interface must validate against the feature schemas 
            generated by the DescribeFeatureType request.
         </xsd:documentation>
      </xsd:annotation>
      <xsd:complexContent>
         <xsd:extension base="wfs:BaseRequestType">
            <xsd:sequence>
               <xsd:element name="TypeName" type="xsd:QName"
                            minOccurs="0" maxOccurs="unbounded">
                  <xsd:annotation>
                     <xsd:documentation>
                        The TypeName element is used to enumerate the
                        feature types to be described.  If no TypeName
                        elements are specified then all features should
                        be described.  The name must be a valid type
                        that belongs to the feature content as defined
                        by the GML Application Schema.
                     </xsd:documentation>
                  </xsd:annotation>
               </xsd:element>
            </xsd:sequence>
            <xsd:attribute name="outputFormat"
                           type="xsd:string" use="optional"
                           default="text/xml; subtype=gml/3.1.1">
               <xsd:annotation>
                  <xsd:documentation>
                     The outputFormat attribute is used to specify what schema
                     description language should be used to describe features.
                     The default value of 'text/xml; subtype=3.1.1' means that
                     the WFS must generate a GML3 application schema that can
                     be used to validate the GML3 output of a GetFeature
                     request or feature instances specified in Transaction
                     operations.
                     For the purposes of experimentation, vendor extension,
                     or even extensions that serve a specific community of
                     interest, other acceptable output format values may be
                     advertised by a WFS service in the capabilities document.
                     The meaning of such values in not defined in the WFS 
                     specification.  The only proviso is such cases is that
                     clients may safely ignore outputFormat values that do
                     not recognize.
                  </xsd:documentation>
               </xsd:annotation>
            </xsd:attribute>
         </xsd:extension>
      </xsd:complexContent>
   </xsd:complexType>
   <!-- RESPONSE -->
   <!-- ================================================================== -->
   <!-- For the outputFormat value of 'text/xml; subtype=3.1.1' a WFS      -->
   <!-- must generate a valid XML-Schema/GML3 application schema that      -->
   <!-- describes that requested feature type(s).                          -->
   <!-- ================================================================== -->

   <!-- ================================================================== -->
   <!-- =   GETFEATURES Request and Response                             = -->
   <!-- ================================================================== -->
   <xsd:element name="GetFeature" type="wfs:GetFeatureType">
      <xsd:annotation>
         <xsd:documentation>
            The GetFeature element is used to request that a Web Feature
            Service return feature type instances of one or more feature
            types.
         </xsd:documentation>
      </xsd:annotation>
   </xsd:element>
   <xsd:complexType name="GetFeatureType">
      <xsd:annotation>
         <xsd:documentation>
            A GetFeature element contains one or more Query elements
            that describe a query operation on one feature type.  In