SubmitTaskFormData (invoked via servicetask) throws error

bbarani — Mon, 04 Mar 2013 20:43:26 GMT

Hi,I have a simple flow as below,External system invokes a workflow process with values —> Activiti will create a user form with a enum form type (user can select 'Yes' or 'No') for submitting the form –> Whenever a user approves / rejects the task, I call a service task(Java class) to set the

Re: SubmitTaskFormData (invoked via servicetask) throws error

bbarani — Tue, 05 Mar 2013 20:42:18 GMT

Hi,

I have a simple flow as below,

External system invokes a workflow process with values —> Activiti will create a user form with a enum form type (user can select 'Yes' or 'No') for submitting the form –> Whenever a user approves / rejects the task, I call a service task(Java class) to set the owner for this task and persist the form property in history detail table.

For some reason, I am getting the below error whenever I submit my form using submitTaskFormdata method. Can someone let me know where I am wrong?

<?xml version="1.0" encoding="UTF-8"?> <definitions id="definitions" targetNamespace="http://activiti.org/bpmn20" xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:activiti="http://activiti.org/bpmn"> <process id="SimplePictureRequest" name="Testing Approval process"> <startEvent id="theStart" activiti:initiator="initiator" /> <sequenceFlow id="flow1" sourceRef="theStart" targetRef="needsApprovalTask" /> <serviceTask id="needsApprovalTask" name="Needs approval"    activiti:class="com.picturerequest.NeedsApprovalDelegate" /> <sequenceFlow id="flow2" sourceRef="needsApprovalTask"    targetRef="gateway" /> <exclusiveGateway id="gateway" name="Needs approval?" /> <sequenceFlow id="flow3" sourceRef="gateway" targetRef="confirmApproval">    <conditionExpression xsi:type="tFormalExpression">     ${needsApproval}    </conditionExpression> </sequenceFlow> <sequenceFlow id="flow4" sourceRef="gateway" targetRef="Email">    <conditionExpression xsi:type="tFormalExpression">     ${!needsApproval}    </conditionExpression> </sequenceFlow> <userTask id="confirmApproval" name="Approve the picture request"    activiti:candidateUsers="${user}" activiti:assignee="${user}">    <extensionElements>     <activiti:formProperty id="approvalFlag" name="Needs Approval:"      expression="${needsApproval}" writable="false" type="boolean" />     <activiti:formProperty id="initiatorName"      name="Initiator:" expression="${initiator}" writable="false" type="string" />     <activiti:formProperty id="descriptionValue"      name="Description:" expression="${description}" readable="true"      writable="false" type="string" />     <activiti:formProperty id="user" name="user"      expression="${user}" writable="false" type="string" />     <activiti:formProperty id="imageName" name="Image:"      expression="${imageName}" writable="false" type="string" />     <activiti:formProperty id="approvalConfirmed"       name="approvalConfirmed" type="enum" required="true">      <activiti:value id="true" name="Yes"></activiti:value>      <activiti:value id="false" name="No"></activiti:value>     </activiti:formProperty>    </extensionElements> </userTask> <sequenceFlow id="flow5" sourceRef="confirmApproval"    targetRef="gateway2" /> <exclusiveGateway id="gateway2" name="Is approval confirmed?" /> <sequenceFlow id="flow6" sourceRef="gateway2" targetRef="chargeAccount">    <conditionExpression xsi:type="tFormalExpression"><![CDATA[${approvalConfirmed == 'true'}]]></conditionExpression> </sequenceFlow> <sequenceFlow id="flow7" sourceRef="gateway2" targetRef="ArchiveTask">    <conditionExpression xsi:type="tFormalExpression"><![CDATA[${approvalConfirmed == 'false'}]]></conditionExpression> </sequenceFlow> <serviceTask id="Email" name="Email Service"    activiti:class="com.picturerequest.ChargeDelegate">    <extensionElements>     <activiti:field name="wsdl"      expression="http://localhost:8521/mailService?wsdl" />     <activiti:field name="operation" expression="chargeAccount" />     <activiti:field name="parameters" expression="${user}, ${imageName}" />     <activiti:field name="returnValue" expression="myReturn" />    </extensionElements> </serviceTask> <serviceTask id="chargeAccount" name="Charge account"    activiti:class="com.picturerequest.ChargeDelegate">    <extensionElements>     <activiti:field name="wsdl"      expression="http://localhost:8291/chargeService?wsdl" />     <activiti:field name="operation" expression="chargeAccount" />     <activiti:field name="parameters" expression="${user}, ${imageName}" />     <activiti:field name="returnValue" expression="myReturn" />    </extensionElements> </serviceTask> <sequenceFlow id="flow10" sourceRef="chargeAccount"    targetRef="ArchiveTask" /> <sequenceFlow id="flow13" sourceRef="Email" targetRef="theEnd" /> <serviceTask id="ArchiveTask" name="serviceTask"    activiti:class="com.picturerequest.ArchiveTask"> </serviceTask> <sequenceFlow id="flow8" sourceRef="ArchiveTask"    targetRef="theEnd" /> <endEvent id="theEnd" /> </process> </definitions>

My java class:

public class ArchiveTask implements org.activiti.engine.delegate.JavaDelegate { public void execute(DelegateExecution execution) throws Exception { Map<String, String> properties = new HashMap<String, String>(); String assigneeName = (String) execution.getVariable("user"); FormService formService = execution.getEngineServices()     .getFormService(); TaskService taskService = execution.getEngineServices()     .getTaskService(); String procId = execution.getProcessInstanceId(); Task task = taskService.createTaskQuery().processInstanceId(procId)     .orderByTaskName().asc().singleResult(); task.setOwner(assigneeName); TaskFormData formData = formService.getTaskFormData(task.getId());      try {    properties.put(formData.getFormProperties().get(0).getName(),      formData.getFormProperties().get(0).getValue());    properties.put(formData.getFormProperties().get(1).getName(),      formData.getFormProperties().get(1).getValue());    properties.put(formData.getFormProperties().get(2).getName(),      formData.getFormProperties().get(2).getValue());    properties.put(formData.getFormProperties().get(3).getName(),      formData.getFormProperties().get(3).getValue());    properties.put(formData.getFormProperties().get(4).getName(),      formData.getFormProperties().get(4).getValue());    properties.put(formData.getFormProperties().get(5).getName(),      formData.getFormProperties().get(5).getValue());    formService.submitTaskFormData(task.getId(), properties); } catch (ActivitiException e) {    e.printStackTrace(); }

I initially thought that this might be due to some data issue but I am able to get the values from the form without any issues,

    System.out.println(task.getName()); System.out.println(formData.getFormProperties().get(0).getName() +    ":" + formData.getFormProperties().get(0).getValue());    System.out.println(formData.getFormProperties().get(1).getName() +    ":" + formData.getFormProperties().get(1).getValue());    System.out.println(formData.getFormProperties().get(2).getName() +    ":" + formData.getFormProperties().get(2).getValue());    System.out.println(formData.getFormProperties().get(3).getName() +    ":" + formData.getFormProperties().get(3).getValue());    System.out.println(formData.getFormProperties().get(4).getName() +    ":" + formData.getFormProperties().get(4).getValue());    System.out.println(formData.getFormProperties().get(5).getName() +    ":" + formData.getFormProperties().get(5).getValue());
Approve the picture request
Needs Approval::true
Initiator::kermit
Description::Invoking Activiti from Java 4
user:kermit
Image::mule2.jpg
approvalConfirmed:true

I am getting the below error whenever I submit my form using submitTaskFormData…

        at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyL istenerTake.execute(AtomicOperationTransitionNotifyListenerTake.java:65)         at org.activiti.engine.impl.interceptor.CommandContext.performOperation( CommandContext.java:85)         at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOp erationSync(ExecutionEntity.java:535)         at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOp eration(ExecutionEntity.java:530)         at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionDestroy Scope.execute(AtomicOperationTransitionDestroyScope.java:115)         at org.activiti.engine.impl.interceptor.CommandContext.performOperation( CommandContext.java:85)         at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOp erationSync(ExecutionEntity.java:535)         at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOp eration(ExecutionEntity.java:530)         at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyL istenerEnd.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerEn d.java:36)         at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.exe cute(AbstractEventAtomicOperation.java:56)         at org.activiti.engine.impl.interceptor.CommandContext.performOperation( CommandContext.java:85)         at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOp erationSync(ExecutionEntity.java:535)         at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOp eration(ExecutionEntity.java:530)         at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.exe cute(AbstractEventAtomicOperation.java:49)         at org.activiti.engine.impl.interceptor.CommandContext.performOperation( CommandContext.java:85)         at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOp erationSync(ExecutionEntity.java:535)         at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOp eration(ExecutionEntity.java:530)         at org.activiti.engine.impl.persistence.entity.ExecutionEntity.take(Exec utionEntity.java:370)         at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performOu tgoingBehavior(BpmnActivityBehavior.java:102)         at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performDe faultOutgoingBehavior(BpmnActivityBehavior.java:51)         at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.leave (FlowNodeActivityBehavior.java:44)         at org.activiti.engine.impl.bpmn.behavior.AbstractBpmnActivityBehavior.l eave(AbstractBpmnActivityBehavior.java:47)         at org.activiti.engine.impl.bpmn.behavior.UserTaskActivityBehavior.signa l(UserTaskActivityBehavior.java:98)         at org.activiti.engine.impl.persistence.entity.ExecutionEntity.signal(Ex ecutionEntity.java:353)         at org.activiti.engine.impl.persistence.entity.TaskEntity.complete(TaskE ntity.java:157)         at org.activiti.engine.impl.cmd.SubmitTaskFormCmd.execute(SubmitTaskForm Cmd.java:47)         at org.activiti.engine.impl.cmd.NeedsActiveTaskCmd.execute(NeedsActiveTa skCmd.java:58)         at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(Comm andExecutorImpl.java:24)         at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execut e(CommandContextInterceptor.java:60)         at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterc eptor.java:32)         at org.activiti.engine.impl.FormServiceImpl.submitTaskFormData(FormServi ceImpl.java:70)         at org.activiti.explorer.ui.task.TaskDetailPanel$4.handleFormSubmit(Task DetailPanel.java:315)         at org.activiti.explorer.ui.form.FormPropertiesEventListener.componentEv ent(FormPropertiesEventListener.java:39)         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl. java:39)         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces sorImpl.java:25)         at java.lang.reflect.Method.invoke(Method.java:597)         at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:490)

This standalone code works fine as expected:

public static void main(String[] args) { Map<String, String> properties = new HashMap<String, String>(); // Create Activiti process engine ProcessEngine processEngine = ProcessEngineConfiguration     .createStandaloneProcessEngineConfiguration()     .setHistory(HistoryLevel.AUDIT.getKey())     .setDatabaseSchemaUpdate(       ProcessEngineConfiguration.DB_SCHEMA_UPDATE_FALSE)     .setJdbcUrl("jdbc:h2:tcp://localhost/activiti1")     .setJobExecutorActivate(true).buildProcessEngine(); RuntimeService runtimeService = processEngine.getRuntimeService(); Map<String, Object> variables = new HashMap<String, Object>(); variables.put("user", "kermit"); variables.put("imageName", "mule2.jpg"); variables.put("description", "Invoking Activiti from Java 4"); org.activiti.engine.IdentityService identityService = processEngine     .getIdentityService(); try {    identityService.setAuthenticatedUserId("kermit");    runtimeService.startProcessInstanceByKey("SimplePictureRequest",      variables); } finally {    FormService formService = processEngine.getFormService();    TaskService taskService = processEngine.getTaskService();    ProcessDefinition definition = processEngine.getRepositoryService()      .createProcessDefinitionQuery()      .processDefinitionKey("SimplePictureRequest")      .singleResult();    System.out.println(definition.getId());    ProcessInstance pi = processEngine.getRuntimeService()      .createProcessInstanceQuery()      .processDefinitionId(definition.getId()).singleResult();    Task task = taskService.createTaskQuery()      .processInstanceId(pi.getId()).singleResult();    System.out.println(pi.getId());    TaskFormData formData = formService.getTaskFormData(task.getId());    properties.put(formData.getFormProperties().get(0).getName(),      formData.getFormProperties().get(0).getValue());    properties.put(formData.getFormProperties().get(1).getName(),      formData.getFormProperties().get(1).getValue());    properties.put(formData.getFormProperties().get(2).getName(),      formData.getFormProperties().get(2).getValue());    properties.put(formData.getFormProperties().get(3).getName(),      formData.getFormProperties().get(3).getValue());    properties.put(formData.getFormProperties().get(4).getName(),      formData.getFormProperties().get(4).getValue());    properties.put(formData.getFormProperties().get(5).getName(),      "true");    formService.submitTaskFormData(task.getId(), properties); } }
Thanks,
Barani

Sorry my bad…. I assumed that we need to submit the user task form manually to store the data in history tables but the data was already getting saved automatically when using user task (in bpmn xml).

Thanks,
Barani

Re: SubmitTaskFormData (invoked via servicetask) throws error

jbarrez — Mon, 11 Mar 2013 09:56:50 GMT

What error? Your stacktrace doesn't show the exception on top so it could be anything.

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SubmitTaskFormData (invoked via servicetask) throws error

Re: SubmitTaskFormData (invoked via servicetask) throws error

Re: SubmitTaskFormData (invoked via servicetask) throws error