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BusinessKey is null for Executions

vicziani

I have a workflow with two User Task after a Parallel Gateway. I start the process with a BusinessKey. After that I have three executions. The BusinessKey of the execution of the parallel gateway is ok, but the BusinessKeys of the two User Tasks are null.

Is it normal?

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Comments

frederikherema1

What about the "getProcessBusinessKey()" on the DelegateExecution? This should return the business-key set at the beginning not the process… The getBusinessKey() will only work if the execution you're using is the process-instance itself.

<br>/** The business key for this execution. Only returns a value if the delegate execution<br>&nbsp;&nbsp; * is a process instance.<br>&nbsp;&nbsp; *&nbsp; <br>&nbsp;&nbsp; * @deprecated use {@link #getProcessBusinessKey()} to get the business key for the process<br>&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; associated with this execution, regardless whether or not this execution is a <br>&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; process-instance. <br>&nbsp;&nbsp; */<br>&nbsp; String getBusinessKey();<br>

vicziani

getProcessBusinessKey throws NullPointerException.

java.lang.NullPointerException
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.ensureProcessInstanceInitialized(ExecutionEntity.java:669)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.getProcessInstance(ExecutionEntity.java:663)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.getProcessBusinessKey(ExecutionEntity.java:624)

And I cannot query the other executions with createExecutionQuery().processInstanceBusinessKey(), because their business key is null. I think the executions after the parallelgateway should be equals the businesskey of the parallelgateway.

What about the "getProcessBusinessKey()" on the DelegateExecution? This should return the business-key set at the beginning not the process… The getBusinessKey() will only work if the execution you're using is the process-instance itself.

 /** The business key for this execution. Only returns a value if the delegate execution    * is a process instance.    *     * @deprecated use {@link #getProcessBusinessKey()} to get the business key for the process    *             associated with this execution, regardless whether or not this execution is a    *             process-instance.    */   String getBusinessKey();

frederikherema1

The null pointer is due to the fact you're nog using the execution inside activiti context (e.g.. JavaDelegate, listener) but rater just use the pogo that comes out of a query.

The query-method you are referring to only selects process-instances which have the given business key set. Since a business-key is a unique identifier for a single process-instance (also enforced on db-level), it doesn't make sense setting the BUSINESS_KEY_ field on the child executions as well (defeats the purpose).

If you want all child-executions of the process-instances with a given business-key, use this approach:

<br>ProcessInstance pi&nbsp; = runtime.createProcessInstanceQuery().processInstanceBusinessKey("myKey").singleResult();<br>List<Execution> executions = runtime.createExecutionQuery().processInstanceId(pi.getId().list();<br>

vicziani

Thank you very much, understood, this works for me!