topic Re: Problem with custom task in Designer in Alfresco Archive

Problem with custom task in Designer

blezek — Fri, 13 Jan 2012 19:36:15 GMT

Hi, I worked through the money-tasks example and constructed some custom tasks for the designer, and all went well. However, when I create a task containing only a BOOLEAN_CHOICE, it does not get saved in the XML output. I looked for an error, but didn't see anything. However, when I add a TEXT

Re: Problem with custom task in Designer

tiesebarrell — Mon, 16 Jan 2012 08:33:54 GMT

So you're saying the BOOLEAN_CHOICE doesn't write to the XML if it's the only property for that task? That sounds like a bug to me. Could you file an issue in Jira for this?

Also, out of curiosity, I noticed you have an @DeweyTask annotation. Have you made any changes to Designer to somehow use that annotation? It might interfere somehow.

Re: Problem with custom task in Designer

blezek — Mon, 16 Jan 2012 13:12:16 GMT

So you're saying the BOOLEAN_CHOICE doesn't write to the XML if it's the only property for that task? That sounds like a bug to me. Could you file an issue in Jira for this?

Also, out of curiosity, I noticed you have an @DeweyTask annotation. Have you made any changes to Designer to somehow use that annotation? It might interfere somehow.

Hi, I'll put something in Jira. Since I'm creating a whole group of tasks in Designer, I've been trying various ways to simplify my work (and learn more about annotations!), I didn't change Designer at all though.

Best,
-dan

Re: Problem with custom task in Designer

niktyagi88 — Wed, 18 Apr 2012 07:37:49 GMT

Hello blezek,
I am also working on custom task in designer by money-task example.I compiled it and the .jar file is created in the target folder.
Now i dont understand what to do next to use the money-task custom task???
Can you please highlight how can money-task by used..

Re: Problem with custom task in Designer

tiesebarrell — Wed, 18 Apr 2012 08:15:41 GMT

niktyagi88,

the information you are looking for is in the userguide. You need to add the Jar to a specific User Library in Eclipse and then include the library in the build path of the Activiti Designer projects.

Re: Problem with custom task in Designer

niktyagi88 — Wed, 18 Apr 2012 08:52:03 GMT

Thnks tiesebarrell,
I proceed with the process given in the user guide.The icon of the money-task is seen in the designer and now i can configure by its properties.When i create the activiti test case by the diagram and run it,I receive the exception.The exception trace is as follow:

org.activiti.engine.ActivitiException: Field definition uses unexisting field 'accountNumber' on class org.acme.runtime.AcmeMoneyJavaDelegation
at org.activiti.engine.impl.bpmn.helper.ClassDelegate.applyFieldDeclaration(ClassDelegate.java:188)
at org.activiti.engine.impl.bpmn.helper.ClassDelegate.instantiateDelegate(ClassDelegate.java:165)
at org.activiti.engine.impl.bpmn.helper.ClassDelegate.getActivityBehaviorInstance(ClassDelegate.java:135)
at org.activiti.engine.impl.bpmn.helper.ClassDelegate.execute(ClassDelegate.java:112)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:44)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerStart.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerStart.java:52)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:49)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionCreateScope.execute(AtomicOperationTransitionCreateScope.java:49)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerTake.execute(AtomicOperationTransitionNotifyListenerTake.java:65)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionDestroyScope.execute(AtomicOperationTransitionDestroyScope.java:115)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerEnd.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerEnd.java:36)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.take(ExecutionEntity.java:365)
at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performOutgoingBehavior(BpmnActivityBehavior.java:102)
at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performDefaultOutgoingBehavior(BpmnActivityBehavior.java:51)
at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.leave(FlowNodeActivityBehavior.java:44)
at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.execute(FlowNodeActivityBehavior.java:36)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:44)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationProcessStartInitial.eventNotificationsCompleted(AtomicOperationProcessStartInitial.java:46)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationProcessStart.eventNotificationsCompleted(AtomicOperationProcessStart.java:45)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.start(ExecutionEntity.java:319)
at org.activiti.engine.impl.cmd.StartProcessInstanceCmd.execute(StartProcessInstanceCmd.java:72)
at org.activiti.engine.impl.cmd.StartProcessInstanceCmd.execute(StartProcessInstanceCmd.java:31)
at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24)
at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:42)
at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)
at org.activiti.engine.impl.RuntimeServiceImpl.startProcessInstanceByKey(RuntimeServiceImpl.java:46)
at org.activiti.designer.test.ProcessTestProcess1.startProcess(ProcessTestProcess1.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.rules.TestWatchman$1.evaluate(TestWatchman.java:48)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

Re: Problem with custom task in Designer

tiesebarrell — Wed, 18 Apr 2012 08:56:32 GMT

Apparently the AcmeMoneyJavaDelegation doesn't have fields for alle the options you can set in the properties screen. Since Activiti is instructed to inject all of the fields, it fails when it encounters a field that doesn't exist in the Delegation class. So you should either add the fields to the delegation or remove them from the CST itself.

Re: Problem with custom task in Designer

niktyagi88 — Wed, 18 Apr 2012 11:58:54 GMT

Thnks for ur suggestion tiesebarrell.
Now my delegate class look like

package org.acme.runtime;
import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.JavaDelegate;
public class AcmeMoneyJavaDelegation implements JavaDelegate {
   private String accountNumber;
   private String comments;
   private String maximumProcessingTime;
   private String vipCustomer;
   private String accountType;
   private String withdrawlLimit;
   private String expiryDate;
@Override
public void execute(DelegateExecution execution) throws Exception {

System.out.println("The delegrate class is called");
}
}

But i am facing an error

org.activiti.engine.ActivitiException: Incompatible type set on field declaration 'accountNumber' for class org.acme.runtime.AcmeMoneyJavaDelegation. Declared value has type org.activiti.engine.impl.el.FixedValue, while expecting java.lang.String
at org.activiti.engine.impl.bpmn.helper.ClassDelegate.applyFieldDeclaration(ClassDelegate.java:192)
at org.activiti.engine.impl.bpmn.helper.ClassDelegate.instantiateDelegate(ClassDelegate.java:165)
at org.activiti.engine.impl.bpmn.helper.ClassDelegate.getActivityBehaviorInstance(ClassDelegate.java:135)
at org.activiti.engine.impl.bpmn.helper.ClassDelegate.execute(ClassDelegate.java:112)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:44)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerStart.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerStart.java:52)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:49)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionCreateScope.execute(AtomicOperationTransitionCreateScope.java:49)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerTake.execute(AtomicOperationTransitionNotifyListenerTake.java:65)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionDestroyScope.execute(AtomicOperationTransitionDestroyScope.java:115)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerEnd.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerEnd.java:36)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.take(ExecutionEntity.java:365)
at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performOutgoingBehavior(BpmnActivityBehavior.java:102)
at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performDefaultOutgoingBehavior(BpmnActivityBehavior.java:51)
at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.leave(FlowNodeActivityBehavior.java:44)
at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.execute(FlowNodeActivityBehavior.java:36)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:44)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationProcessStartInitial.eventNotificationsCompleted(AtomicOperationProcessStartInitial.java:46)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationProcessStart.eventNotificationsCompleted(AtomicOperationProcessStart.java:45)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:77)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:530)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:525)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.start(ExecutionEntity.java:319)
at org.activiti.engine.impl.cmd.StartProcessInstanceCmd.execute(StartProcessInstanceCmd.java:72)
at org.activiti.engine.impl.cmd.StartProcessInstanceCmd.execute(StartProcessInstanceCmd.java:31)
at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24)
at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:42)
at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)
at org.activiti.engine.impl.RuntimeServiceImpl.startProcessInstanceByKey(RuntimeServiceImpl.java:54)
at org.activiti.designer.test.ProcessTestProcess1.startProcess(ProcessTestProcess1.java:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.rules.TestWatchman$1.evaluate(TestWatchman.java:48)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

Re: Problem with custom task in Designer

blezek — Wed, 18 Apr 2012 12:11:47 GMT

Thnks for ur suggestion tiesebarrell.
Now my delegate class look like

package org.acme.runtime;
import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.JavaDelegate;
public class AcmeMoneyJavaDelegation implements JavaDelegate {
   private String accountNumber;
   private String comments;
   private String maximumProcessingTime;
   private String vipCustomer;
   private String accountType;
   private String withdrawlLimit;
   private String expiryDate;
@Override
public void execute(DelegateExecution execution) throws Exception {

System.out.println("The delegrate class is called");
}
}

But i am facing an error

Hi,

The problem is that your JavaDelegate class must use Expression instead of String. Your class should look like this:

package org.acme.runtime;
import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.JavaDelegate;
public class AcmeMoneyJavaDelegation implements JavaDelegate {
   private Expression accountNumber;
   private Expression comments;
   private Expression maximumProcessingTime;
   private Expression vipCustomer;
   private Expression accountType;
   private Expression withdrawlLimit;
   private Expression expiryDate;  
 @Override
 public void execute(DelegateExecution execution) throws Exception {
   
  System.out.println("The delegrate class is called"); 
                System.out.println ( "The accountNumber is: " + accountNumber.getValue(execution).toString() );
 }
}

Be aware that Activiti only passes these as static strings, they are not evaluated (so $foo is not expanded).

Best,
-dan

Re: Problem with custom task in Designer

niktyagi88 — Wed, 18 Apr 2012 13:13:14 GMT

Thnks a lot blezek…Do grt job….

Re: Problem with custom task in Designer

moushmi — Wed, 25 Jul 2012 07:45:28 GMT

Hello blezek,

I am working on customizing the tasks as well.
Is it possible in activiti to to customize task to felicitate email attachment?
As per the user guide PropertyType have 8 types(TEXT,TEXT,BOOLEAN_CHOICE,COMBOBOX_CHOICE..and likewise) supported in them.Can i have a 9th type like attachment field which will enable users to attach their documents(if required).

If yes,which is the source code class i should make the changes in?

Please share any other thoughts or workaround if you have any..as your solutions are quite useful..

Thanks and best regards,
Moushmi

Re: Problem with custom task in Designer

blezek — Wed, 25 Jul 2012 15:34:43 GMT

I do not know if it is possible to add a file attachment from with the Eclipse Designer. Perhaps one of the developers can help out.

Re: Problem with custom task in Designer

tiesebarrell — Wed, 25 Jul 2012 17:08:39 GMT

Sure, you could extend Designer to support an additional type and render a file chooser in SWT. I guess the obvious question would be what you want to do file the file itself. You'd probably have a file path in the BPMN, but what does that actually do for you?

Re: Problem with custom task in Designer

moushmi — Thu, 26 Jul 2012 05:39:32 GMT

Sure, you could extend Designer to support an additional type and render a file chooser in SWT. I guess the obvious question would be what you want to do file the file itself. You'd probably have a file path in the BPMN, but what does that actually do for you?

Hello Tiesebarrell,

I am trying to have an attachment option with the email service task which currently it does not support to the end user.
Hence i was trying out various ways in which i can achieve the same.

One of my approach now, is to extend the activiti designer itself to provide a customized task which will include a drawer with sender(text field) ,recepient(text field) and attachment(file field) fields. These data will be passed to the service class(java delegate) which in turn pass the data to mail service task and send a mail with the attachment in it.
Hope this helps you to understand my requirement.
Additionally,i have completed the back end integration which sends a mail with attachment(achieved this my modifying the MailActivityBehavior class in the source code). But now i need to integrate the same with front end by providing an email attachment option in the activiti explorer which will enable the end users to attach their documents.

Providing the source code class names where the changes needs to done will be really appreciated.

I followed the process that was mentioned in user guide but
the moment i am uploading the new jar in the workspace i am getting the following error while opening a bpmn20.xml file in the activiti designer:
java.lang.IllegalArgumentException: Argument cannot be null
at org.eclipse.swt.SWT.error(SWT.java:4263)
at org.eclipse.swt.SWT.error(SWT.java:4197)
at org.eclipse.swt.SWT.error(SWT.java:4168)
at org.eclipse.swt.graphics.ImageLoader.load(ImageLoader.java:128)
at org.eclipse.swt.graphics.ImageDataLoader.load(ImageDataLoader.java:22)
at org.eclipse.swt.graphics.ImageData.<init>(ImageData.java:331)
at org.eclipse.swt.graphics.Image.<init>(Image.java:545)
at org.activiti.designer.diagram.ActivitiToolBehaviorProvider.getPalette(ActivitiToolBehaviorProvider.java:532)
at org.eclipse.graphiti.ui.internal.editor.GFPaletteRoot.updatePaletteEntries(GFPaletteRoot.java:104)
at org.eclipse.graphiti.ui.internal.editor.GFPaletteRoot.<init>(GFPaletteRoot.java:80)
at org.eclipse.graphiti.ui.editor.DefaultPaletteBehavior.createPaletteRoot(DefaultPaletteBehavior.java:103)
at org.eclipse.graphiti.ui.editor.DefaultPaletteBehavior.getPaletteRoot(DefaultPaletteBehavior.java:115)
at org.eclipse.graphiti.ui.editor.DiagramEditor.getPaletteRoot(DiagramEditor.java:938)
at org.eclipse.gef.ui.parts.GraphicalEditorWithFlyoutPalette.setEditDomain(GraphicalEditorWithFlyoutPalette.java:145)
at org.eclipse.graphiti.ui.editor.DiagramEditor.setConfigurationProvider(DiagramEditor.java:1863)
at org.eclipse.graphiti.ui.editor.DiagramEditor.setInput(DiagramEditor.java:551)
at org.activiti.designer.eclipse.editor.ActivitiDiagramEditor.setInput(ActivitiDiagramEditor.java:203)
at org.eclipse.graphiti.ui.editor.DiagramEditor.init(DiagramEditor.java:445)
at org.activiti.designer.eclipse.editor.ActivitiDiagramEditor.init(ActivitiDiagramEditor.java:139)
at org.eclipse.ui.internal.EditorManager.createSite(EditorManager.java:828)
at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:647)
at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:465)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
at org.eclipse.ui.internal.EditorReference.getEditor(EditorReference.java:289)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2945)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2850)
at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2842)
at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2793)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2789)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2773)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2764)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:651)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:610)
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:355)
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:164)
at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:249)
at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:228)
at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:275)
at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:251)
at org.eclipse.jdt.internal.ui.packageview.PackageExplorerActionGroup.handleOpen(PackageExplorerActionGroup.java:376)
at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart$4.open(PackageExplorerPart.java:538)
at org.eclipse.ui.OpenAndLinkWithEditorHelper$InternalListener.open(OpenAndLinkWithEditorHelper.java:48)
at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:866)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:864)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1152)
at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:1256)
at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:275)
at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:269)
at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:309)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
at org.eclipse.equinox.launcher.Main.main(Main.java:1386)

Also,please let me know in case you have any better approach to resolve this issue.

Best regards,
Moushmi

Re: Problem with custom task in Designer

tiesebarrell — Thu, 26 Jul 2012 17:56:12 GMT

The exception you're getting has to do with the availability of image resources in the extension file, I suspect. I still don't quite get your requirement. Are you trying to send an email with attachment by letting the user upload a document in Activiti Explorer? What exactly do you want to do by extending Designer?

Re: Problem with custom task in Designer

moushmi — Fri, 27 Jul 2012 05:15:14 GMT

The exception you're getting has to do with the availability of image resources in the extension file, I suspect. I still don't quite get your requirement. Are you trying to send an email with attachment by letting the user upload a document in Activiti Explorer? What exactly do you want to do by extending Designer?

HI Tiesebarrell,

I have checked my image to be present in the extended jar in the location:"src/main/resources/diagrams/icon/home.png" at context of the project.

Yes,you are correct,the whole purpose of doing this activity is:
I want to provide an attachment option in the email of the email service task to the end user in Activiti explorer.
Hence i thought may be if i extend the activiti designer and provide a separate drawer which will include all the necessary details like "to,from,attachment" fields to the designer then may be i can achieve my target.

Please let me know in case you have any other better way to achieve this target.

Best regards,
Moushmi

Re: Problem with custom task in Designer

tiesebarrell — Sat, 28 Jul 2012 10:55:39 GMT

AFAIK, there's only basic fields in Activiti Explorer. Those have little to do with what you model in Designer, but are assembled from form properties. So if you want to allow users to upload the attachments for emails in Explorer, you will have to extend Explorer, not Designer.

Re: Problem with custom task in Designer

pascal1 — Mon, 30 Jul 2012 06:55:24 GMT

Hi Moushmi,
did you resolve the problem with that exception? I get the same one, everytime when I want to use my customized .jar. I also have the Image in the right path, but the Exception is still there…

Thanks,
Pascal

Re: Problem with custom task in Designer

pascal1 — Mon, 30 Jul 2012 08:18:42 GMT

Sorry, my mistake…

You need to overwrite the "getSmallIconPath()"-method everytime. Without an image there will be that exception, it isn´t possible to make a custom-task without an icon packed within the jar.

Re: Problem with custom task in Designer

moushmi — Fri, 03 Aug 2012 06:12:59 GMT

Sorry, my mistake…

You need to overwrite the "getSmallIconPath()"-method everytime. Without an image there will be that exception, it isn´t possible to make a custom-task without an icon packed within the jar.

HI,

I had already overridden the "getSmallIconPath()"-method,along with the image in correct path.Still i am facing the same error.

Thanks and best regards,
Moushmi