The International Purchase Order Schema

HydraExpress XML Binding Development Guide

6.2 The International Purchase Order Schema

We begin with the schema — actually two schemas. As you can see, the address.xsd schema is included in the complexContent.xsd schema.

<schema targetNamespace="http://www.example.com/IPO"
        xmlns="http://www.w3.org/2001/XMLSchema"
        xmlns:ipo="http://www.example.com/IPO">
.
.
.
 <!-- include address constructs -->
 <include schemaLocation="address.xsd"/>

 <element name="purchaseOrder" type="ipo:PurchaseOrderType"/>

 <element name="comment" type="string"/>

 <complexType name="PurchaseOrderType">
  <sequence>
   <element name="shipTo"     type="ipo:Address"/>
   <element name="billTo"     type="ipo:Address"/>
   <element ref="ipo:comment" minOccurs="0"/>
   <element name="items"      type="ipo:Items"/>
  </sequence>
  <attribute name="orderDate" type="date"/>
 </complexType>

 <complexType name="Items">
  <sequence>
   <element name="item" minOccurs="0" maxOccurs="unbounded">
    <complexType>
     <sequence>
      <element name="productName" type="string"/>
      <element name="quantity">
       <simpleType>
        <restriction base="positiveInteger">
         <maxExclusive value="100"/>
        </restriction>
       </simpleType>
      </element>
      <element name="USPrice"    type="decimal"/>
      <element ref="ipo:comment" minOccurs="0"/>
      <element name="shipDate"   type="date" minOccurs="0"/>
     </sequence>
     <attribute name="partNum" type="ipo:SKU" use="required"/>
    </complexType>
   </element>
  </sequence>
 </complexType>

 <simpleType name="SKU">
  <restriction base="string">
   <pattern value="\d{3}-[A-Z]{2}"/>
  </restriction>
 </simpleType>

  <complexType name="ConfirmedItems">
    <complexContent>
      <restriction base="ipo:Items">
         <sequence>
         <!-- item element is different than in Items -->
         <element name="item" minOccurs="1" maxOccurs="unbounded">

          <!-- remainder of definition is same as Items -->
            <complexType>
              <sequence>
                <element name="productName" type="string"/>
                <element name="quantity">
                  <simpleType>
                    <restriction base="positiveInteger">
                      <maxExclusive value="100"/>
                    </restriction>
                  </simpleType>
                </element>
                <element name="USPrice"    type="decimal"/>
                <element ref="ipo:comment" minOccurs="0"/>
                <element name="shipDate"   type="date" minOccurs="0"/>
              </sequence>
              <attribute name="partNum" type="ipo:SKU" use="required"/>
            </complexType>
          </element>
        </sequence>
      </restriction>
    </complexContent>
  </complexType>
</schema>

<!--address.xsd -->
<schema targetNamespace="http://www.example.com/IPO"
        xmlns="http://www.w3.org/2001/XMLSchema"
        xmlns:ipo="http://www.example.com/IPO">

 <annotation>
  <documentation xml:lang="en">
   Addresses for International Purchase order schema
   Copyright 2000 Example.com. All rights reserved.
  </documentation> 
 </annotation>

 <complexType name="Address">
  <sequence>
   <element name="name"   type="string"/>
   <element name="street" type="string"/>
   <element name="city"   type="string"/>
  </sequence>
 </complexType>

 <complexType name="USAddress">
  <complexContent>
   <extension base="ipo:Address">
    <sequence>
     <element name="state" type="string"/>
     <element name="zip"   type="positiveInteger"/>
    </sequence>
   </extension>
  </complexContent>
 </complexType>

 <complexType name="UKAddress">
  <complexContent>
   <extension base="ipo:Address">
    <sequence>
     <element name="postcode" type="ipo:UKPostcode"/>
    </sequence>
    <attribute name="exportCode" type="positiveInteger" fixed="1"/>
   </extension>
  </complexContent>
 </complexType>

 <!-- other Address derivations for more countries --> 

 <simpleType name="USState">
  <restriction base="string">
   <enumeration value="AK"/>
   <enumeration value="AL"/>
   <enumeration value="AR"/>
   <!-- and so on ... -->
  </restriction>
 </simpleType>

 <!-- simple type definition for UKPostcode -->
 <simpleType name="UKPostcode">
  <restriction base="string">
  </restriction>
 </simpleType>

</schema>

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