Query signals/messages attached to current task

[jsalmon]

Hi,

I'm trying to query the signals/messages attached to the current active task in my workflow (I only have a single task active at any time). However, each task may have one or more signals attached to it.

How can I query those signals without knowing their names in advance?

I found a way to do this, but using a non-public API:

Task task = taskService.createTaskQuery().processInstanceBusinessKey(request.getRequestId()).active().singleResult();

CommandExecutor executor = ((ProcessEngineConfigurationImpl) ProcessEngines.getDefaultProcessEngine().getProcessEngineConfiguration()).getCommandExecutor();

List<EventSubscriptionEntity> events = new EventSubscriptionQueryImpl(executor).processInstanceId(task.getProcessInstanceId()).list()) 
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Is there any way I can do this with public API? I know about

ExecutionQuery.signalEventSubscriptionName()‍

, but that requires knowing the signal names beforehand.

Cheers,
Justin

[martin_grofcik]

Hi Justin,

I did not use this query yet,
but there is org.activiti.engine.test.api.nonpublic.EventSubscriptionQueryTest#testQueryByExecutionId (activitiId() method is there too)

Regards
Martin

[jsalmon]

Hi Martin,

Thanks a lot for your response. Yes, in fact it was that test case where I found the <code>EventSubscriptionQueryImpl</code>. Do you think it is likely to become public API in the future?

Cheers,
Justin

[trademak]

If you think this should be part of the public API, please create a JIRA issue and we'll look into it.

Thanks,