<xs:element name="node" type="node.type" block="#all">
    <xs:annotation>
        <xs:documentation source="http://graphml.graphdrawing.org/" xml:lang="en">
           Description: Describes one node in the &lt;graph&gt;
                        containing this &lt;node&gt;.
           Occurence: &lt;graph&gt;. 
      </xs:documentation>
    </xs:annotation>
    <xs:key name="port_name_key">
        <xs:annotation>
            <xs:documentation source="http://graphml.graphdrawing.org/" xml:lang="en">
        Ensures: existence and uniqueness of the name attributes of 
                 each &lt;port&gt; element within this &lt;node&gt;.
      </xs:documentation>
        </xs:annotation>
        <xs:selector xpath=".//g:port" />
        <xs:field xpath="@name" />
    </xs:key>
    <xs:unique name="node_data_key_unique">
        <xs:annotation>
            <xs:documentation source="http://graphml.graphdrawing.org/" xml:lang="en">
        Ensures: uniqueness of the key attributes of &lt;data&gt; children
                 of this &lt;node&gt; element.
      </xs:documentation>
        </xs:annotation>
        <xs:selector xpath="./g:data" />
        <xs:field xpath="@key" />
    </xs:unique>
</xs:element>

• g:node.type
  • node