Need help with xml schema for the given XML

[Vlad Golodov]

Hi All!

I have an XML file like that:

<?xml version="1.0" encoding="UTF-8"?>
<components>

<component type="ALBUM">
<picture>http://www.ils.ee/yldine/est-infojapersonal.gif</picture>
<thumbnail>http://www.ils.ee/yldine/est-infojapersonal_small.gif</thumbnail>
<description>Picture of the girl on the ils.ee homepage</description>
</component>
 
<component type="BOOKMARK">
<url>http://www.ils.ee/yldine/est-infojapersonal.gif</url>
<description>Picture of the girl on the ils.ee homepage</description>
</component>
 
<component type="ADDRESSBOOK">
<contact>
<name>Chris</name>
<surname>Lautre</surname>
<address>Plomipuu 16</address>
<email>[e-mail]</email>
</contact>
</component>
 
</components>

How can I restrict special types in XML Schema for the special TYPE of the component?

For the ADDRESS type: picture, thumbnail, description.
For the BOOKMARK type: url, description.

At the moment I have a schema like that:

<?xml version="1.0" encoding="UTF-8"?>
 
<schema xmlns="http://www.w3.org/2001/XMLSchema"
xmlns:hm="http://www.hellomum.com/components"
targetNamespace="http://www.hellomum.com/components">
 
<element name="components" type="hm:Components"/>
 
<complexType name="Components">
<sequence>
<element name="component" type="hm:Component" maxOccurs="unbounded"/>
</sequence>
</complexType>
 
<complexType name="Component">
<sequence>
<element name="component" type="hm:Component" minOccurs="0" maxOccurs="unbounded"/>
</sequence>
<attribute name="type" type="hm:ComponentType"/>
</complexType>
 
<simpleType name="ComponentType">
<restriction base="string">
<enumeration value="ALBUM"/>
<enumeration value="ASSET"/>
<enumeration value="INVENTORY"/>
<enumeration value="ITINERARY"/>
<enumeration value="TRAVELDOC"/>
<enumeration value="BOOKMARK"/>
<enumeration value="ADDRESSBOOK"/>
</restriction>
</simpleType>
 
</schema>

Thanks in advance.
[ February 16, 2005: Message edited by: Vlad Golodov ]

[Balaji Loganathan]

Guess no..

[Vlad Golodov]

Thanks for the answer. My solution will be to put all the possible parameters into one node: <component>. Some of the parameters will be just minOccurs="0".

If you have better solution for the given problem, I would be very glad to here that.