Getting into the Flow: the Web Services Flow Language, by James Snell
WSJ Vol 02 Issue 03 - pg.42

	


Listing 1

<flowModel name="totalSupplyFlow" serviceProviderType="totalSupply">

 <serviceProvider name="buyer" type="buyer" />
 <serviceProvider name="seller" type="seller" />
 <serviceProvider name="shipper" type="shipper" />

 <activity name="submitPO">
 <performedBy serviceProvider="buyer"/>
 <implement>
 <export>
 <target portType="totalSupplyPT"

 operation="submitPO"/>
 </export>
 </implement>
 </activity>

 <activity name="processPO">
 <performedBy serviceProvider="seller"/>
 <implement>
 <export>
 <target portType="receivePO"

 operation="receivePO"/>
 </export>
 </implement>
 </activity>

 <activity name="processPayment">
 <performedBy serviceProvider="seller"/>
 <implement>
 <export>
 <target portType="totalSupplyPT"

 operation="processPayment"/>
 </export>
 </implement>
 </activity>

 <activity name="submitShippingOrder">
 <performedBy serviceProvider="seller" />
 <implement>
 <export>
 <target portType="totalSupplyPT"

 operation="submitShippingOrder"/>
 </export>
 </implement>
 </activity>

 <activity name="receiveShippingOrder">
 <performedBy serviceProvider="shipper" />
 <implement>
 <export>
 <target portType="totalSupplyPT"

 operation="receiveShippingOrder"/>
 </export>
 </implement>
 </activity>

 <activity name="shipProduct">
 <performedBy serviceProvider="shipper" />
 <implement>
 <export>
 <target portType="totalSupplyPT"

 operation="shipProduct" />
 </export>
 </implement>
 </activity>

 <controlLink source="submitPO" target="processPO"/>
 <controlLink source="processPO" target="processPayment" 
 />
 <controlLink source="processPayment" 
 target="submitShippingOrder" />
 <controlLink source="submitShippingOrder" 
 target="receiveShippingOrder" />
 <controlLink source="receiveShippingOrder" 
 target="shipProduct" />

 <dataLink source="submitPO" target="processPO">
 <map sourceMessage="purchaseOrder" 
 targetMessage="purchaseOrder"/>
</dataLink>
 <dataLink source="processPO" target="processPayment">
 <map sourceMessage="purchaseOrder" 
 targetMessage="purchaseOrder"/>
 </dataLink>
 <dataLink source="processPayment" 
 target="submitShippingOrder">
 <map sourceMessage="purchaseOrder" 
 targetMessage="shippingOrder" />
 </dataLink>
 <dataLink source="submitShippingOrder" 
 target="receiveShippingOrder">
 <map sourceMessage="shippingOrder" 
 targetMessage="shippingOrder" />
 </dataLink>
 <dataLink source="receiveShippingOrder" 
 target="shipProduct">
 <map sourceMessage="shippingOrder" 
 targetMessage="shippingOrder" />
 <dataLink>
</flowModel>


Listing 2

<activity name="submitPO">
 <performedBy serviceProvider="buyer"/>
 <implement>
 <export>
 <target portType="totalSupplyPT"
operation="submitPO"/>
 </export>
 </implement>
 </activity>

 <activity name="processPO">
 <performedBy serviceProvider="seller"/>
 <implement>
 <export>
 <target portType="receivePO"
operation="receivePO"/>
 </export>
 </implement>
 </activity>

 <controlLink source="submitPO" target="processPO"/>