The Process could not be started, Cause: Cannot resolve identifier 'weatherOk'

Camunda 7 Topics Discussion & Questions
1

Hi Naill,

I am trying to run the example posted here Tutorial: Camunda Enterprise Edition for Java Developers (Video 2) - YouTube

when i am trying to run the process , it throws me error:

The process could not be started. : Cannot instantiate process definition Canada:1:6052f34c-83f0-11ea-988c-d0c5d33c3174: Unknown property used in expression: #{weatherOk}. Cause: Cannot resolve identifier 'weatherOk

Dont know what I am doing wrong here.** Can you please help ??**

Below is the process diagram:

process.bpmn (5.3 KB)

CheckWeatherDelegate Class code:

package com.camunda.demo.Canada;

import java.util.Random;

import org.camunda.bpm.engine.delegate.DelegateExecution;
import org.camunda.bpm.engine.delegate.JavaDelegate;

public class CheckWeatherDelegate implements JavaDelegate {

@Override
public void execute(DelegateExecution execution) throws Exception {
	
	Random rando = new Random();
	
	execution.setVariable("name", "kuku");
	execution.setVariable("weatherOk", rando.nextBoolean());

}

}

2

Hi,
You can use camunda:asyncAfter=“false” option for service task “Weather check” which is camunda:asyncAfter=“true” as of now.

For more details please refer:
https://docs.camunda.org/manual/7.11/user-guide/process-engine/the-job-executor/#exclusive-jobs

3

Hi Alok,

I changed the camunda:asyncAfter=“false” option for service task “Weather check” . Its still not working and throwing the same error.
process-2.bpmn (5.2 KB)

4

Hi,
I tried the same code and it works for me. Please try with this one and if works then can compare with yoursprocess.bpmn (5.4 KB)

package com.sample.checkweather;

import java.util.Random;

import org.camunda.bpm.engine.delegate.DelegateExecution;
import org.camunda.bpm.engine.delegate.JavaDelegate;

public class CheckWeatherDelegate implements JavaDelegate{

@Override
public void execute(DelegateExecution execution) throws Exception {
	// TODO Auto-generated method stub
	Random rando = new Random();
	
	execution.setVariable("name", "kuku");
	execution.setVariable("weatherOk", rando.nextBoolean());
}

}

5

Hi Alok,

I tried multiple times with your code. Somehow when i start the process, it doesn’t give error and it says “the process has been started” but when i go to cockpit it doesn’t show anything in process instances and incidents.

package com.camunda.demo.weathercheck;

import java.util.Random;

import org.camunda.bpm.engine.delegate.DelegateExecution;
import org.camunda.bpm.engine.delegate.JavaDelegate;

public class CheckWeatherDelegate implements JavaDelegate {

@Override
public void execute(DelegateExecution execution) throws Exception {
	// TODO Auto-generated method stub
	Random rando = new Random();
	
	execution.setVariable("name", "kuku");
	execution.setVariable("weatherOk", rando.nextBoolean());
}

}process-3.bpmn (4.9 KB)

Capture
Capture1362×565 32.6 KB

6

Great… now what are you expecting in cockpit?

You can see the complaint script task running and logger will be printed on console when weatherOk is false.

7

It is not showing anything under process instances and incidents. I am expecting output similar to the one shown in the video https://www.youtube.com/watch?v=HxtZf5VD6lQ&t=82s at at 19:43.

Below are the logs:
10:47:09,451 INFO [org.jboss.as.repository] (DeploymentScanner-threads - 2) WFLYDR0001: Content added at location C:\Users\kukreti\Desktop\Camunda\server\wildfly-10.1.0.Final\standalone\data\content\c7\f4dd84623073415b2442c3d7533e004af6dd00\content
10:47:09,462 INFO [org.jboss.as.server.deployment] (MSC service thread 1-1) WFLYSRV0027: Starting deployment of “weathercheck.war” (runtime-name: “weathercheck.war”)
10:47:09,533 INFO [org.camunda.bpm.container.impl.jboss.deployment.processor.ProcessApplicationProcessor] (MSC service thread 1-7) Detected user-provided @ProcessApplication component with name ‘com.camunda.demo.weathercheck.CamundaBpmProcessApplication’.
10:47:09,640 INFO [org.wildfly.extension.undertow] (ServerService Thread Pool – 114) WFLYUT0021: Registered web context: /weathercheck
10:47:09,640 INFO [org.camunda.bpm.container.impl.jboss.service.ProcessApplicationDeploymentService] (ServerService Thread Pool – 116) Deployment summary for process archive ‘weathercheck’ of process application ‘weathercheck’:

    process.bpmn

10:47:09,711 INFO [org.camunda.bpm.application] (ServerService Thread Pool – 116) ENGINE-07021 ProcessApplication ‘weathercheck’ registered for DB deployments [4f4ff4b4-8571-11ea-9808-d0c5d33c3174]. Will execute process definitions

    weathercheck[version: 1, id: weathercheck:1:4f568466-8571-11ea-9808-d0c5d33c3174]

Deployment does not provide any case definitions.
10:47:09,771 INFO [org.jboss.as.server] (DeploymentScanner-threads - 2) WFLYSRV0010: Deployed “weathercheck.war” (runtime-name : “weathercheck.war”)

and the API resul

[{“links”:[],“id”:“4f4ff4b4-8571-11ea-9808-d0c5d33c3174”,“name”:“weathercheck”,“source”:“process application”,“deploymentTime”:“2020-04-23T10:47:09.663-0400”,“tenantId”:null}]

8

Are you using community edition?

In community edition, history view is not available.

Have a look here for features available in community edition vs enterprise edition.

9

okay Alok. Understood.

one more question.

What is the meaning of the sentence in log files- “Deployment does not provide any case definitions”?

10

Meaning you don’t have CMMN file to be deployed in camunda