Process Developer

Back Next

Default-Order Compensation Example

Default compensation processing is available from the compensate activity with the form

. The activity invokes the compensation handlers on all of the enclosed scopes that are eligible for compensation. The scope's compensation handlers are invoked in the reverse order of completion. If a scope executed multiple times in a

<while>

loop, it is eligible for each execution instance where it completed without having a fault generated.

The following example shows how a confirmed purchase order is canceled. The

CancelPurchase

operation compensates the

SyncPurchase

operation in an already completed Invoke activity.

<scope>
    <compensationHandler>
      <invoke partnerLink="Seller" portType="SP:Purchasing"
        operation="CancelPurchase"
        inputVariable="getResponse"
        outputVariable="getConfirmation">
        <correlations>
          <correlation set="PurchaseOrder" pattern="request"/>
        </correlations>
      </invoke>
    </compensationHandler>
      <invoke partnerLink="Seller" portType="Sell:Purchasing"
        operation="SyncPurchase"
        inputVariable="sendPO"
        outputVariable="getResponse">
        <correlations>
          <correlation set="PurchaseOrder" initiate="yes"
              pattern="request"/>
        </correlations>
    </invoke>
</scope>

See also Specified Compensation Example.

Compensation Handlers and Compensate Activities

Download Guide

Watch

Comments

Cloud Application Integration Homepage