Cube engine: Error while executing manage

Question

Since my last changes at the bpel process, i am getting the following serious error, even after restarting and fresh deploying.
<2004-10-27 17:32:37,528> <ERROR> <default.collaxa.cube> <BaseCubeSessionBean::logError> Error while invoking bean "cube engine": Error while executing manage.
An error has occurred while attempting to execute the method "manage" on the work manager for node "BpRcv1". The exception reported was: "".
<2004-10-27 17:32:37,528> <ERROR> <default.collaxa.cube.engine.dispatch> <BaseScheduledWorker::process> Failed to handle dispatch message ... exception Message handle error.
An exception occurred while attempting to process the message "com.collaxa.cube.engine.dispatch.message.instance.PerformMessage"; the exception is: Error while executing manage.
An error has occurred while attempting to execute the method "manage" on the work manager for node "BpRcv1". The exception reported was: "".
When I turn debugging on, I can see a NPE:
<2004-10-27 18:03:34,459> <DEBUG> <default.collaxa.cube.engine> <CubeEngine::checkManageScope> Found highest dirty scope 'BpTry0.2'
<2004-10-27 18:03:34,459> <DEBUG> <default.collaxa.cube.engine> <CubeEngine::manageScope> Managing scope 'BpTry0.2' on cube instance '150'
<2004-10-27 18:03:34,469> <DEBUG> <default.collaxa.cube.engine> <CubeEngine::manageScope> Can activate node 'BpRcv1' with scope 'BpSeq3.13'
<2004-10-27 18:03:34,469> <DEBUG> <default.collaxa.cube.engine> <CubeEngine::manageScope> failed to manage scope
java.lang.NullPointerException
at com.collaxa.cube.engine.ext.wmp.BPELMailReceiveWMP.__getDelay(BPELMailReceiveWMP.java:120)
at com.collaxa.cube.engine.ext.wmp.BPELMailReceiveWMP.manage(BPELMailReceiveWMP.java:62)
at com.collaxa.cube.engine.CubeEngine.manageScope(CubeEngine.java:3161)
at com.collaxa.cube.engine.CubeEngine.checkManageScope(CubeEngine.java:4830)
at com.collaxa.cube.engine.CubeEngine.finalizeActivity(CubeEngine.java:3699)
at com.collaxa.cube.engine.CubeEngine.checkBlockConditions(CubeEngine.java:4605)
at com.collaxa.cube.engine.CubeEngine.performActivity(CubeEngine.java:3372)
at com.collaxa.cube.engine.CubeEngine.handleWorkItem(CubeEngine.java:1698)
What to do ???
(I am using OC4J with 2.0.10 on W2k.)
Wolfgang

Answer 1

Just another reminder, apart from configuring the incoming (say POP3) server correctly, in order for a receive "onMessage" operation work in a POP3 email partner, a "subscribe" operation must be performed on the same partner link first.
Here is a working example:
<assign>
<copy>
<from>
<subscription xmlns="http://services.oracle.com/bpel/mail">
<mailAccount>kaugen-mail</mailAccount>
<filter>from='[email protected]'</filter>
</subscription>
</from>
<to variable="subscriptionRequest" part="payload"/>
</copy>
</assign>
<invoke name="subscribe" partnerLink="MailService"
portType="mail:MailService"
operation="subscribe" inputVariable="subscriptionRequest"/>
<receive name="receiveResult" createInstance="no"
partnerLink="MailService" portType="mail:MailServiceCallback"
operation="onMessage" variable="message"/>
Thanks!
And, I totally agree that we need to improve our error handling and messages.
Regards,
Alex Yiu