This text file contains sample code fragments from:
Section 10.2 - Composite Policies
Chapter 10 - Fundamental WS-Policy: Assertions, Expressions, and Attachments
Book - Web Service Contract Design & Versioning for SOA
Series - Prentice Hall Service-Oriented Computing Series from Thomas Erl
Site - www.soabooks.com


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

Example 10.7 - A policy assertion structured with the ExactlyOnce construct, allowing only one of the two enclosed assertions to be used at a time.


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

Example 10.8 - A policy assertion structured with the wsp:All construct, requiring that both enclosed assertions be applied together.


<wsp:Policy>
  <wsam:Addressing wsp:optional="true"/>
</wsp:Policy>

Example 10.9 - A policy assertion that is not required.


<wsp:Policy>
  <wsp:ExactlyOne>
    <wsp:All>
      <wsam:Addressing><wsp:Policy/></wsam:Addressing>
    </wsp:All>
    <wsp:All/>
  </wsp:ExactlyOne>
</wsp:Policy>

Example 10.10 - Two wsp:All elements (one with an assertion and one without) wrapped in a wsp:ExactlyOne construct.