topic Re: How to start a process by Standalone in Activiti in Alfresco Archive

How to start a process by Standalone in Activiti

sherlock — Tue, 24 Jul 2012 13:34:06 GMT

Hi,I am new to activiti. I am started exploring from few days.I am using Activiti 5.9 and eclipse indigo and activiti 5.9.3 designer plugin.When im trying to create a stand alone program to create a process and run. it's throwing an exception like SEVERE: Error while closing command contextorg.activ

Re: How to start a process by Standalone in Activiti

frederikherema1 — Tue, 24 Jul 2012 13:46:04 GMT

Are you running from within eclipse? Make sure the "diagram" folder is on your class path (-> make it a source-folder).

Re: How to start a process by Standalone in Activiti

sherlock — Tue, 24 Jul 2012 21:00:27 GMT

Are you running from within eclipse? Make sure the "diagram" folder is on your class path (-> make it a source-folder).

Yeah i am running in eclipse and created the diagram folder in the src/main/resources.

its is pass through the following code its able to find the bpmn process but its not able to find the process id.

RepositoryService repositoryService=processEngine.getRepositoryService();
repositoryService.createDeployment().addClasspathResource("diagrams/MyProcess.bpmn").deploy();

Please help me….

Thanks
Sherlock

Re: How to start a process by Standalone in Activiti

frederikherema1 — Wed, 25 Jul 2012 06:41:07 GMT

Your process should be a "bpmn20.xml" file, instead of just a "bpmn" file, in order toz be picked up by the BPMNDeployer. If not, it will consider the file as "just another resource"…

You probably copied this from the designer unit-test, which adds the bpmn-file as a stream, naming it "myProcess.bpmn20.xml".

Re: How to start a process by Standalone in Activiti

sherlock — Wed, 25 Jul 2012 07:11:16 GMT

Your process should be a "bpmn20.xml" file, instead of just a "bpmn" file, in order toz be picked up by the BPMNDeployer. If not, it will consider the file as "just another resource"…

You probably copied this from the designer unit-test, which adds the bpmn-file as a stream, naming it "myProcess.bpmn20.xml".

when i changed it to bpmn20.xml its giving following exception.

Exception in thread "main" org.activiti.engine.ActivitiException: resource 'diagrams/MyProcess.bpmn20.xml' not found
at org.activiti.engine.impl.repository.DeploymentBuilderImpl.addClasspathResource(DeploymentBuilderImpl.java:59)
at com.sample.Demo.main(Demo.java:41)

and i have tried below code its able to find the process id but while printing the task namecode in the bold font. its giving the follwing Exception



log4j:WARN No appenders could be found for logger (org.apache.ibatis.logging.LogFactory).
log4j:WARN Please initialize the log4j system properly.
Jul 25, 2012 12:38:09 PM org.activiti.engine.impl.ProcessEngineImpl <init>
INFO: ProcessEngine default created
Jul 25, 2012 12:38:09 PM org.activiti.engine.impl.bpmn.deployer.BpmnDeployer deploy
INFO: Processing resource diagrams/MyProcess.bpmn
Jul 25, 2012 12:38:09 PM org.activiti.engine.impl.bpmn.deployer.BpmnDeployer deploy
INFO: Processing resource MyProcess.bpmn20.xml
Jul 25, 2012 12:38:09 PM org.activiti.engine.impl.bpmn.parser.BpmnParse parseDefinitionsAttributes
INFO: XMLSchema currently not supported as typeLanguage
Jul 25, 2012 12:38:09 PM org.activiti.engine.impl.bpmn.parser.BpmnParse parseDefinitionsAttributes
INFO: XPath currently not supported as expressionLanguage
Jul 25, 2012 12:38:09 PM org.activiti.engine.impl.bpmn.deployer.BpmnDeployer deploy
INFO: Processing resource MyProcess.startProcess.png
Exception in thread "main" java.lang.NullPointerException
 at com.sample.Demo.main(Demo.java:47)

stand alone code that i deployed is


package com.sample;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngineConfiguration;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;



public class Demo {
public static void main(String[] args) {
     
    // Create Activiti process engine
    ProcessEngine processEngine = ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration().buildProcessEngine();
    
    // Get Activiti services
    RepositoryService repositoryService = processEngine.getRepositoryService();
    RuntimeService runtimeService = processEngine.getRuntimeService();
    
    // Deploy the process definition
    repositoryService.createDeployment().addClasspathResource("diagrams/MyProcess.bpmn").deploy();
      
    // Start a process instance
    runtimeService.startProcessInstanceByKey("startProcess");
    TaskService taskService=processEngine.getTaskService();
   Task task=taskService.createTaskQuery().taskAssignee("kermit").singleResult();
   [b]System.out.println(task.getName());[/b]
  }
}

Thanks
Sherlock

Re: How to start a process by Standalone in Activiti

frederikherema1 — Wed, 25 Jul 2012 07:35:35 GMT

You should also RENAME the file to *.bpmn20.xml

OR

Add the file to the deployment this way:


.addInputStream("myProcess.bpmn20.xml, ReflectUtil.getResourceAsStream("myProcess.bpmn")

As I said, the engine only triggers process-parsing when resource NAME ends with bpmn20.xml

Re: How to start a process by Standalone in Activiti

sherlock — Wed, 25 Jul 2012 08:05:45 GMT

You should also RENAME the file to *.bpmn20.xml

OR

Add the file to the deployment this way:

.addInputStream("myProcess.bpmn20.xml, ReflectUtil.getResourceAsStream("myProcess.bpmn")
As I said, the engine only triggers process-parsing when resource NAME ends with bpmn20.xml

Yes fedrick,
I mentioned the file name as you said and i posted the Exception also in the above post as


Exception in thread "main" org.activiti.engine.ActivitiException: resource 'diagrams/MyProcess.bpmn20.xml' not found
at org.activiti.engine.impl.repository.DeploymentBuilderImpl.addClasspathResource(DeploymentBuilderImpl.java:59)
at com.sample.Demo.main(Demo.java:41)

and when i used deployment with addInputStream method.
repositoryService.createDeployment().addInputStream("MyProcess.bpmn20.xml", ReflectUtil.getResourceAsStream("MyProcess.bpmn")).deploy();
its giving follwing error



INFO: ProcessEngine default created
Exception in thread "main" org.activiti.engine.ActivitiException: inputStream for resource 'MyProcess.bpmn20.xml' is null
 at org.activiti.engine.impl.repository.DeploymentBuilderImpl.addInputStream(DeploymentBuilderImpl.java:46)
 at com.sample.Demo.main(Demo.java:41)

and i mentioned the code that is working but the following error is occurring while printing the task.getName().


public static void main(String[] args) {
     
    // Create Activiti process engine
    ProcessEngine processEngine = ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration().buildProcessEngine();
    
    // Get Activiti services
    RepositoryService repositoryService = processEngine.getRepositoryService();
    RuntimeService runtimeService = processEngine.getRuntimeService();
    
    // Deploy the process definition
    repositoryService.createDeployment().addClasspathResource("diagrams/MyProcess.bpmn").deploy();
      
    // Start a process instance
    runtimeService.startProcessInstanceByKey("startProcess");
    TaskService taskService=processEngine.getTaskService();
   Task task=taskService.createTaskQuery().taskAssignee("kermit").singleResult();
   System.out.println(task.getName());
  }

please help me to get it resolved.

Thanks
Sherlock

Re: How to start a process by Standalone in Activiti

frederikherema1 — Wed, 25 Jul 2012 08:15:15 GMT

Try using

repositoryService.createDeployment().addInputStream("MyProcess.bpmn20.xml", ReflectUtil.getResourceAsStream("diagrams/MyProcess.bpmn")).deploy();

Re: How to start a process by Standalone in Activiti

sherlock — Wed, 25 Jul 2012 08:18:53 GMT

Try using

repositoryService.createDeployment().addInputStream("MyProcess.bpmn20.xml", ReflectUtil.getResourceAsStream("diagrams/MyProcess.bpmn")).deploy();

Yeah it worked..

Thank u….
Sherlock

Re: How to start a process by Standalone in Activiti

martin_grofcik — Tue, 29 Oct 2013 07:56:35 GMT

It is hard to guess.
Could you create jUnit test?
http://forums.activiti.org/content/sticky-how-write-unit-test

Re: How to start a process by Standalone in Activiti

sunitanayak83 — Wed, 20 Jan 2016 23:30:37 GMT

Hi,

I am using Alfresco Activiti and want to initiate a task outside of alfresco activiti. I have written a standalone java program to do this(i.e my java program creates a task in alfresco activiti on execution).

My java program looks like this :

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngineConfiguration;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;

public class TestingABC {

public static void main(String[] args)
{

//Create Activiti process engine
     ProcessEngine processEngine = ProcessEngineConfiguration
       .createStandaloneInMemProcessEngineConfiguration()
       .buildProcessEngine();

     // Get Activiti services
     RepositoryService repositoryService = processEngine.getRepositoryService();
     RuntimeService runtimeService = processEngine.getRuntimeService();

     // Deploy the process definition
     repositoryService.createDeployment()
       .addClasspathResource("diagram/TestingThruActiviti.bpmn20.xml")
       .deploy();

     // Start a process instance
     ProcessInstance processInstance=runtimeService.startProcessInstanceByKey("TestingThruActiviti");

     TaskService taskService=processEngine.getTaskService();
Task task=taskService.createTaskQuery().taskAssignee("$INITIATOR").singleResult();

System.out.println(task.getName());



}

}

The program runs fine as long as my taskAssignee is "$INITIATOR", but when I change my taskAssignee to a real user in alfresco activiti, it throws a null pointer exception.

Exception in thread "main" java.lang.NullPointerException
at TestingABC.main(TestingABC.java:34)

Any pointers ?

Re: How to start a process by Standalone in Activiti

jbarrez — Thu, 21 Jan 2016 09:16:11 GMT

Well, probably because that task does not exists when you're doing task.getName().
Did you check your database to see what value for the assignee is in that row?

Re: How to start a process by Standalone in Activiti

sunitanayak83 — Thu, 21 Jan 2016 14:19:44 GMT

I am able to see the name of the task when I assign the task to "$INITIATOR", but I get a null pointer exception when I assign the task to some other assignee(e.g ABC ABC). I am probably not assigning the user properly. What is the proper way of assigning users ? I am using Alfresco Activiti for creating the process and Eclipse IDE for creating the java program(which initiates the task outside of activiti).

Re: How to start a process by Standalone in Activiti

sunitanayak83 — Fri, 22 Jan 2016 10:58:02 GMT

I am trying to start a process in Alfresco Activiti externally using a standalone java program. My java program and .bpmn20.xml reside on Eclipse IDE. On executing the java program, the process doesn’t get deployed. Any pointers on why this is happening ?

//Create Activiti process engine
     ProcessEngine processEngine = ProcessEngineConfiguration.createStandaloneInMemProcessEngineConfiguration().buildProcessEngine();

     //Get Activiti services
     RepositoryService repositoryService = processEngine.getRepositoryService();
     RuntimeService runtimeService = processEngine.getRuntimeService();

     //Deploy the process definition
     repositoryService.createDeployment().addClasspathResource("diagram/TestingThruActiviti.bpmn20.xml").deploy();

     // Start a process instance
     ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("TestingThruActiviti");

     TaskService taskService= processEngine.getTaskService();

Task task=taskService.createTaskQuery().taskAssignee("$INITIATOR").singleResult();

System.out.println(task.getName());

Re: How to start a process by Standalone in Activiti

jbarrez — Fri, 22 Jan 2016 15:10:44 GMT

What do you mean 'doesn't get deployed'? Where?

You are booting up an in memory H2 database by doing this "createStandaloneInMemProcessEngineConfiguration". So if you want to see it appear somewhere else, you need the engines to point to the same database.