This text file contains sample code fragments from:
Section 10.1 - Policy Structure
Chapter 10 - Fundamental WS-Policy: Assertions, Expressions, and Attachments
Book - Web Service Contract Design & Versioning for SOA
Series - The Prentice Hall Service Technology Series from Thomas Erl
Site - www.servicetechbooks.com


<xsd:schema
  xmlns:tns="http://docs.oasis-open.org/ws-rx/wsrmp/200608"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  targetNamespace="http://docs.oasisopen.org/wsrx/wsrmp/200608"
    elementFormDefault="qualified"
    attributeFormDefault="unqualified">
  <xsd:element name="RMAssertion">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:any namespace="##other" processContents="lax"
          minOccurs="0" maxOccurs="unbounded"/>
        </xsd:sequence>
        <xsd:anyAttribute namespace="##any"
          processContents="lax"/>
    </xsd:complexType>
  </xsd:element>
12...
</xsd:schema>

Example 10.2 - The XML Schema definition for the global RMAssertion element, as defined in the WS-ReliableMessaging specification.


<wsp:Policy>
  <wsam:Addressing><wsp:Policy/></wsam:Addressing>
</wsp:Policy>
<wsp:Policy>
  <wsrmp:RMAssertion><wsp:Policy/></wsrmp:RMAssertion>
</wsp:Policy>
<wsp:Policy>
  <wsam:Addressing><wsp:Policy/></wsam:Addressing>
  <wsrmp:RMAssertion><wsp:Policy/></wsrmp:RMAssertion>
</wsp:Policy>

Example 10.4 - Three separate policy expressions, each wrapping a different combination of the previously explained policy assertions.


<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  targetNamespace="http://actioncon.com/schema/respguarantee"
  elementFormDefault="qualified">
  <xsd:element name="responseGuarantee"
    type="ResponseGuaranteeType"/>
  <xsd:complexType name="ResponseGuaranteeType">
    <xsd:sequence>
      <xsd:element name="responseInMilliseconds"
        type="xsd:integer"/>
    </xsd:sequence>
  </xsd:complexType>
</xsd:schema>

Example 10.5 - The XML Schema global type definition for the responseGuarantee policy assertion. Note also how this policy assertion structure contains a nested element.


Assertion Instance #1

<argt:responseGuarantee>
  <argt:responseInMilliseconds>
    50
  </argt:responseInMilliseconds>
</argt:responseGuarantee>

Assertion Instance #2
<argt:responseGuarantee>
  <argt:responseInMilliseconds>
    30
  </argt:responseInMilliseconds>
</argt:responseGuarantee>

Example 10.6 - Two different instances of a policy assertion, each providing different values.