Hi, I want to use serviceTask with triggerable and async.But I don’t know how to use it, can anybody give me an example? I’m confused: Why “step_one” can not be executed after startProcessInstanceByKey has been called. If I set “step_one” flowable:async=“false”, the execution variable is null. If set async=“true”, the execution variable is not null (code like this:) Deployment deployment = repositoryService.createDeployment().addClasspathResource(“bpmn/SendEvent.bpmn”).deploy(); ProcessInstance pi = runtimeService.startProcessInstanceByKey(“SendEvent”); Execution execution = runtimeService.createExecutionQuery() .processInstanceId(pi.getId()) .activityId(“step_one”) .singleResult(); assertNotNull(execution); Thread.sleep(5000); runtimeService.triggerAsync(execution.getId()); Thread.sleep(5000); after triggerAsync called, nothing happened. “sendEventService.sendMessage” has been called. My bpmn like this: <definitions xmlns=“http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi=“http://www.w3.org/2001/XMLSchema-instance” xmlns:xsd=“http://www.w3.org/2001/XMLSchema” xmlns:flowable=“http://flowable.org/bpmn” xmlns:bpmndi=“http://www.omg.org/spec/BPMN/20100524/DI” xmlns:omgdc=“http://www.omg.org/spec/DD/20100524/DC” xmlns:omgdi=“http://www.omg.org/spec/DD/20100524/DI” typeLanguage=“http://www.w3.org/2001/XMLSchema” expressionLanguage=“http://www.w3.org/1999/XPath” targetNamespace="http://www.flowable.org/processdef”>

Hi, The “triggerable” setting currently works for a Java delegate implementing the TriggerableActivityBehavior interface. Please, have a look at this unit test: flowable/flowable-engine/blob/master/modules/flowable-engine/src/test/java/org/flowable/engine/test/bpmn/servicetask/TriggerableServiceTaskTest.java /* Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.flowable.engine.test.bpmn.servicetask; import java.util.HashMap; import java.util.List; import java.util.Map; import org.flowable.engine.impl.jobexecutor.AsyncContinuationJobHandler; This file has been truncated. show original Also, to the associated process diagram flowable/flowable-engine/blob/master/modules/flowable-engine/src/test/resources/org/flowable/engine/test/bpmn/servicetask/TriggerableServiceTaskTest.testAsyncJobs.bpmn20.xml This file has been truncated. show original I hope this helps to clarify the triggerable service task . Regards, Jorge Mora.

Hello, You can have a look at this topic: [image] Camel usable outside Camel Task? (e.g. in JavaDelegate or Expression) Flowable Engine Hello, Is there a way to retrieve a Camel object (bean?) or the flowable camel context outside a Camel Task? Either in a JavaDelegate (of a Service Task for example) or in an Expression (in the Expression field of a Service Task using #{camel.callRoute(‘direct:myRoute’)}) for example? The use-case could be to have a triggerable Service Task (not available for a Camel Task for now) using camel in its JavaDelegate (simulates a triggerable Camel Task) or in its Expression. Thanks Best Regards … HTH Best Regards William

Thank you for reply. I got it. My UT is passed :slight_smile:

@ jorge.mora With reference to your mention about triggerable works only for Java delegate, can you please let me know how to use triggerable for a http service task . I don’t have any java classes . Everything is handled in bpmn alone. Also in flowable doc there is no detailed explanation about trigger can be used with only java delegate implementing the TriggerableActivityBehavior. Can you throw some pointers on this. Thanks in advance

I think that you can have a look at the answer from @pstapleton for Camel tasks. You can try creating your own ActivityBehavior based on the original HttpActivityBehavior and add the triggerable behavior. I have not tried that by myself but it must work.

Thank you Jorge! I will try with your approach .

Will there be support for serviceTasks with expressions? We heavily rely on expressions (${bean.method()}) and would also need the triggerable flag.

As I see, the org.flowable.engine.impl.bpmn.behavior.ServiceTaskExpressionActivityBehavior class does not use the triggerable attribute. Would it be fine to just not call leave when triggerable is true (in execute()) and do nothing in trigger()?

@donkon, that would most certainly be doable. However, how do you plan do call the trigger method? In order to trigger an instance you would need to know the executionId

I have the executionId and would use the runtimeService.trigger() method. Would that work?

How to use triggerable

Flowable Engine

wberges December 11, 2018, 8:40am 3

Hello,
You can have a look at this topic:

HTH
Best Regards
William

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How to use triggerable

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