Web Services Conversation Adaptation Using Conditional Substitution Semantics of Application Domain Concepts

Listing 1

An XML representation for a CSEG segment.

<Root>

 <Operation name = “PayOnline”>

     <Inputs>

      <Concepts names = {“CreditCard, Amount, Currency”}>

      <SubstitutionPattern>

          <Scope>

         <Concepts names = {“Payment”}/>

          </Scope>

        <Condition>

                 (CreditCard.Details ≠ NULL) and (Amount >0)

              and (Currency ≠ NULL)

        </Condition>

        <ConversionFunction>

                    “http://example.org/URI/path/convert1.java”

          </ConversionFunction>

      </SubstitutionPattern>

      </Concepts>

     </Inputs>

     <Outputs>

      <Concepts names = {“Receipt”}>

      <SubstitutionPattern>

          <Scope>

         <Concepts names = {“Confirmation”}/>

          </Scope>

        <Condition>

                  (Confirmation ≠ NULL)

        </Condition>

        <ConversionFunction>

                   “http://example.org/URI/path/convert2.java”

          </ConversionFunction>

      </SubstitutionPattern>

      </Concepts>

     </Outputs>

 </Operation>

  -

</Root>