This text file contains sample code fragments from:
Section 12.3 - Common CRUD Messages Types
Chapter 12 - Advanced XML Schema Part I: Message Flexibility, Type Inheritance, and Composition
Book - Web Service Contract Design & Versioning for SOA
Series - Prentice Hall Service-Oriented Computing Series from Thomas Erl
Site - www.soabooks.com


<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  targetNamespace="http://actioncon.com/schema/gameinfo"
  xmlns="http://actioncon.com/schema/gameinfo"
  elementFormDefault="qualified">
  <xsd:element name="games" type="GamesType"/>
  <xsd:complexType name="GamesType">
    <xsd:sequence>
      <xsd:element name="game" type="GameType"
        maxOccurs="unbounded"/>
    </xsd:sequence>
  </xsd:complexType>
  <xsd:complexType name="GameType">
    <xsd:sequence>
      <xsd:element name="productID" type="ProductIDType"/>
      <xsd:element name="gtin" type="GTINType"/>
      <xsd:element name="title" type="TitleType"/>
      <xsd:element name="desc" type="xsd:string"/>
      <xsd:element name="esrbRating" type="ESRBRatingType"/>
      <xsd:element name="msrPrice" type="PriceType"/>
      <xsd:element name="numberOfPlayers"
        type="NumberOfPlayersRangeType"/>
    </xsd:sequence>
  </xsd:complexType>
  <xsd:complexType name="TitleType">
    <xsd:simpleContent>
      <xsd:extension base="xsd:string">
        <xsd:attribute name="language" type="xsd:language"/>
      </xsd:extension>
    </xsd:simpleContent>
  </xsd:complexType>
  <xsd:complexType name="NumberOfPlayersRangeType">
    <xsd:sequence>
      <xsd:element name="minimum" type="xsd:short"/>
      <xsd:element name="maximum" type="xsd:short"
        minOccurs="0"/>
      </xsd:sequence>
  </xsd:complexType>
  <xsd:simpleType name="ProductIDType">
    <xsd:restriction base="xsd:string">
      <xsd:pattern value="[A-Z]{2}[0-9]{4}"/>
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="GTINType">
    <xsd:restriction base="xsd:string">
      <xsd:length value="13"/>
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ESRBRatingType">
    <xsd:restriction base="xsd:string">
      <xsd:enumeration value="EC"/>
      <xsd:enumeration value="E"/>
      <xsd:enumeration value="E10+"/>
      <xsd:enumeration value="T"/>
      <xsd:enumeration value="M"/>
      <xsd:enumeration value="AO"/>
      <xsd:enumeration value="RP"/>
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="PriceType">
    <xsd:restriction base="xsd:decimal">
      <xsd:totalDigits value="8"/>
      <xsd:fractionDigits value="2"/>
    </xsd:restriction>
  </xsd:simpleType>
</xsd:schema>

Example 12.23 - The XML schema used to represent a complete Game document.


<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  targetNamespace="..." elementFormDefault="qualified">
  <xsd:element name="acknowledgement" type="xsd:string"/>
</xsd:schema>

Example 12.24 - A simple acknowledgement message structure based on the xsd:string simple type.


<xsd:complexType name="NumberOfPlayersRangeType">
  <xsd:sequence>
    <xsd:element name="minimum" type="NumberOfPlayersType"/>
    <xsd:element name="maximum" type="NumberOfPlayersType"
      minOccurs="0"/>
  </xsd:sequence>
  <xsd:attribute name="dirty" type="xsd:boolean"
    use="optional"/>
</xsd:complexType>

Example 12.25 - An optional attribute added to the NumberOfPlayersRangeType construct.


<xsd:complexType name="DirtyUpdateType">
  <xsd:sequence>
    <xsd:any minOccurs="0" maxOccurs="unbounded"
      processContents="lax"
      namespace="..."/>
  </xsd:sequence>
</xsd:complexType>

Example 12.26 - The xsd:any element being used to allow for one or more updated element values to be provided.


<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  targetNamespace="http://actioncon.com/schema/gameinfo"
  xmlns="http://actioncon.com/schema/gameinfo"
  elementFormDefault="qualified">
  <xsd:element name="numberOfPlayers"
    type="NumberOfPlayersRangeType"/>
  <xsd:complexType name="NumberOfPlayersRangeType">
  <xsd:sequence>
    <xsd:element name="minimum" type="NumberOfPlayersType"/>
    <xsd:element name="maximum" type="NumberOfPlayersType"
      minOccurs="0"/>
  </xsd:sequence>
  </xsd:complexType>
</xsd:schema>

Example 12.27 - The complete schema for a parameter-centric input message in which only the value of the NumberOfPlayers element is updated.