Camunda Example clarification

Question

Am new to Camunda when am developing the camunda process flow in usertask am assign the assignee through properties but it not assign to particular user. and am worked on ubuntu 14.0.4 and camunda with BPMN 2.0 first example am trying. Can any one help me? And one more clarification if we are create the Html forms and its also not reflect when we start the process with credentials demo/demo and when include the service task binding with class in .bpmn file and am facing the following error in tomcat log file:

I am working on following environment: OS:ubuntu14.0.4 Eclipse:Luna jdk:1.8 tomcat:7 Camunda:Camunda BPM platform v7.3.0.

am trying to execute the following example

"https://docs.camunda.org/get-started/bpmn20/deploy/"

and this is my bpmn file:

SequenceFlow_1 SequenceFlow_7 SequenceFlow_1 SequenceFlow_7 SequenceFlow_8 SequenceFlow_8

SEVERE: Exception sending context initialized event to listener instance of class org.camunda.bpm.getstarted.loanapproval.LoanApprovalApplication
org.camunda.bpm.engine.ProcessEngineException: Exception while performing 'Deployment of Process Application Loan Approval App => Deployment of process archive 'loan-approval': One of the attributes 'class', 'delegateExpression', 'type', or 'expression' is mandatory on serviceTask. | loan-approval.bpmn | line 17 | column 150

at org.camunda.bpm.container.impl.spi.DeploymentOperation.execute(DeploymentOperation.java:134)
at org.camunda.bpm.container.impl.jmx.MBeanServiceContainer.executeDeploymentOperation(MBeanServiceContainer.java:148)
at org.camunda.bpm.container.impl.spi.DeploymentOperation$DeploymentOperationBuilder.execute(DeploymentOperation.java:209)
at org.camunda.bpm.container.impl.RuntimeContainerDelegateImpl.deployProcessApplication(RuntimeContainerDelegateImpl.java:87)
at org.camunda.bpm.application.AbstractProcessApplication.deploy(AbstractProcessApplication.java:51)
at org.camunda.bpm.application.impl.ServletProcessApplication.contextInitialized(ServletProcessApplication.java:131)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5014)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5528)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1095)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1930)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.camunda.bpm.engine.ProcessEngineException: One of the attributes 'class', 'delegateExpression', 'type', or 'expression' is mandatory on serviceTask. | loan-approval.bpmn | line 17 | column 150

at org.camunda.bpm.engine.impl.util.xml.Parse.throwExceptionForErrors(Parse.java:188)
at org.camunda.bpm.engine.impl.bpmn.parser.BpmnParse.execute(BpmnParse.java:267)
at org.camunda.bpm.engine.impl.bpmn.deployer.BpmnDeployer.deploy(BpmnDeployer.java:105)
at org.camunda.bpm.engine.impl.persistence.deploy.DeploymentCache$1.call(DeploymentCache.java:62)
at org.camunda.bpm.engine.impl.persistence.deploy.DeploymentCache$1.call(DeploymentCache.java:59)
at org.camunda.bpm.engine.impl.interceptor.CommandContext.runWithoutAuthorization(CommandContext.java:485)
at org.camunda.bpm.engine.impl.persistence.deploy.DeploymentCache.deploy(DeploymentCache.java:59)
at org.camunda.bpm.engine.impl.persistence.entity.DeploymentManager.insertDeployment(DeploymentManager.java:47)
at org.camunda.bpm.engine.impl.cmd.DeployCmd.deploy(DeployCmd.java:177)
at org.camunda.bpm.engine.impl.cmd.DeployCmd$1.call(DeployCmd.java:93)
at org.camunda.bpm.engine.impl.cmd.DeployCmd$1.call(DeployCmd.java:82)
at org.camunda.bpm.engine.impl.interceptor.CommandContext.runWithoutAuthorization(CommandContext.java:485)

Post the bpmn file too, please. – thorben Dec 15 '15 at 09:56 — thorben, Dec 15 '15 at 09:56

score 3 · Answer 1 · answered Dec 16 '15 at 09:26

3

The new Camunda Modeler produces BPMN models that require Camunda version >= 7.4.0, 7.3.3, 7.2.6 to run (see https://docs.camunda.org/manual/latest/modeler/).

The reason is that the namespace for Camunda extension elements and attributes has changed from http://activiti.org/bpmn to http://camunda.org/schema/1.0/bpmn. The new modeler produces models that use the new namespace and that can therefore not be executed on Camunda platform versions that don't support it. Assuming that you use this modeler, you'll have to upgrade Camunda.

As an alternative, you can use the deprecated Eclipse plugin. Again, make sure to choose the correct version that works with 7.3.0.

answered Dec 16 '15 at 09:26

thorben

1,577
8
14

Am using eclipse Luna with camunda 3.0.0 and camunda version is camunda-bpm-tomcat-7.3.0.tar.gz these are the files am using, am not found name space related to activiti in my bpmn document – prasad paluru Dec 16 '15 at 09:56
And that is the problem. Read https://docs.camunda.org/manual/latest/modeler/eclipse-plugin/update-sites/. You'll have to use modeler version 2.7.1 with Camunda 7.3.0. – thorben Dec 16 '15 at 10:13
no am using the camunda modeler 3.0.0 only not 2.7.1 – prasad paluru Dec 16 '15 at 10:54
Modeler 3.0.0 DOES NOT WORK with Camunda BPM 7.3.0. You can either use Camunda BPM 7.4.0 or Modeler 2.7.1. – thorben Dec 16 '15 at 12:27
thanks thorben. this solved the problem. accepting your answer. – prasad paluru Dec 17 '15 at 06:17
still am facing the problems with the html forms are not loaded can any help me – prasad paluru Dec 17 '15 at 06:26

Camunda Example clarification

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