XSD Schema for XML with multiple structures
- by Xetius
I am attempting to write an XML Schema to cover a number of XML conditions which I may encounter. I have the same root element (serviceRequest) with different child elements. I was trying to use the xs:extension element to define multiple versions, but it is complaining about unexpected element orderInclusionCriteria etc.
Am I going about this the right way, or is there a better way to define this?
The other way I thought about this was to have a single xs:choice with all the options inside it, but this seemed somewhat inelegant.
These XSD files are for use within XMLBeans if that makes any difference.
I have Given the following 2 examples of XML:
1)
<?xml version="1.0" encoding="utf-8"?>
<serviceRequest method="GOO" debug="NO">
<sessionId sID="ABC1234567" />
<orderInclusionCriteria accountId="1234567" accountNum="1234567890" />
</serviceRequest>
2)
<?xml version="1.0" encoding="utf-8"?>
<serviceRequest method="GOO" debug="NO">
<sessionId sID="ABC1234567" />
<action aType='MakePayment'>
<makePayment accountID='CH91015165S' amount='5.00' />
</action>
</serviceRequest>
I thought I could use the following schema file:
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="serviceRequest" type="ServiceRequestType" />
<xs:element name="session" type="SessionType" />
<xs:attribute name="method" type="xs:string" />
<xs:attribute name="debug" type="xs:string" />
<xs:complexType name="SessionType">
<xs:attribute name="sID" use="required">
<xs:simpleType>
<xs:restriction base="xs:string"/>
</xs:simpleType>
</xs:attribute>
</xs:complexType>
<xs:complexType name="ServiceRequestType">
<xs:sequence>
<xs:element ref="session" />
</xs:sequence>
<xs:attribute ref="method" />
<xs:attribute ref="debug" />
</xs:complexType>
<xs:complexType name="OrderTrackingServiceRequest">
<xs:complexContent>
<xs:extension base="ServiceRequestType">
<xs:complexType>
<xs:sequence>
<xs:element name="OrderInclusionCriteria" type="xs:string" />
</xs:sequence>
</xs:complexType>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="Action">
<xs:complexContent>
<xs:extension base="ServiceRequestType">
<xs:complexType>
<xs:sequence>
<xs:element name="makePayment">
<xs:complexType>
<xs:attribute name="accountID" type="xs:string" />
<xs:attribute name="amount" type="xs:string" />
<xs:complexType>
</xs:element>
</xs:sequence>
<xs:attribute name="aType" type="xs:string" />
</xs:complexType>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:schema>
