add Guid to component

Author: linhard

Schemas/visinfo.xsd

@@ -97,6 +97,7 @@
 			<xs:element name="AuthoringToolId" type="xs:string" minOccurs="0"/>
 		</xs:sequence>
 		<xs:attribute ref="IfcGuid"/>
+		<xs:attribute name="Guid" type="Guid"/>
 		<xs:attribute name="Selected" type="xs:boolean"/>
 		<xs:attribute name="Visible" type="xs:boolean" default="true"/>
 		<xs:attribute name="Color" type="xs:hexBinary"/>
@@ -130,4 +131,9 @@
 			<xs:enumeration value="JPG"/>
 		</xs:restriction>
 	</xs:simpleType>
+	<xs:simpleType name="Guid">
+		<xs:restriction base="xs:string">
+			<xs:pattern value="[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}"/>
+		</xs:restriction>
+	</xs:simpleType>
 </xs:schema>