How do we get the next task Id of a User Input Task. This has to be entered in t

RE: How do we get the next task Id of a User Input Task. This has to be entered in t

Pablo Ramos Clemente — Wed, 30 Jan 2019 14:55:30 GMT

Hola Eduardo,

I have a similary problem, but I need retrieve the details for each input of the Task. Is possible to do it without java code?
Im relatively new in Appian and I still dont control the java plugins, so im trying to do it only with Appian code and functions.

I have reached the point of recovering the instances of my tasks in a grid, and get the "id" of the task that I select. But I dont know how to access the inputs task details using this "id".

Thanks for your time!
Pablo.

RE: How do we get the next task Id of a User Input Task. This has to be entered in t

Eduardo Fuentes — Thu, 17 Jul 2014 04:18:30 GMT

That's correct, at the API level arrays follow the Java convention of being 0-based indexed arrays. Only in the UI Appian arrays (not Java arrays) will be 1-based

RE: How do we get the next task Id of a User Input Task. This has to be entered in t

aneeshv713 — Wed, 16 Jul 2014 22:02:08 GMT

Ok resolved the error.

processExecutionService.getCurrentTasksForProcess(processID, com.appiancorp.suiteapi.process.ProcessExecutionService.UNATTENDED_AND_ATTENDED_TASKS, 0, 10, TaskSummary.SORT_BY_ID, Constants.SORT_ORDER_ASCENDING);

Start Index should have been from 0 and not 1.

RE: How do we get the next task Id of a User Input Task. This has to be entered in t

aneeshv713 — Wed, 16 Jul 2014 18:00:18 GMT

This piece of code is giving me an empty array?
Long[] currentTasksIdsForProcessArray = new Long[100];
                    TaskSummary[] taskResults = new TaskSummary[100];

                    ProcessExecutionService processExecutionService = ServiceLocator.getProcessExecutionService(sc);
                    try {

                              ResultPage resultPage;

                              resultPage = processExecutionService.getCurrentTasksForProcess(processID, com.appiancorp.suiteapi.process.ProcessExecutionService.UNATTENDED_AND_ATTENDED_TASKS, 1, 10, TaskSummary.SORT_BY_ID, Constants.SORT_ORDER_ASCENDING);

                              taskResults = (TaskSummary[])resultPage.getResults();
                              List<Long> currentTasksIdsForProcessList = new ArrayList<Long>();
                              for (TaskSummary taskSummary : taskResults)
                              {
                                        currentTasksIdsForProcessList.add(taskSummary.getId());
                              }
                              System.out.println("Task IDs Array is -->"+currentTasksIdsForProcessList);
                              currentTasksIdsForProcessArray = currentTasksIdsForProcessList.toArray(new Long[100]);
                              System.out.println("Task IDs are -->"+currentTasksIdsForProcessArray);

                    } catch (InvalidProcessException e) {
                              // TODO Auto-generated catch block
                              e.printStackTrace();
                    } catch (PrivilegeException e) {
                              // TODO Auto-generated catch block
                              e.printStackTrace();
                    }



                    return currentTasksIdsForProcessArray;

RE: How do we get the next task Id of a User Input Task. This has to be entered in t

Eduardo Fuentes — Wed, 16 Jul 2014 07:03:01 GMT

This line gives you an array of TaskSummaryObjects because getResults() returns an Array of Objects and TaskSummary[] is by inheritance an Array of Objects so the cast is allowed at compilation time and works at runtime

TaskSummary[] currentTasksForProcess = (TaskSummary[])currentTasksForProcessResultPage.getResults();

this gives you a list of details for each task. You can then iterate over these objects and get the task ID which can be stored in a Long[] array.

Here's an example. In the example I'm finally storing all the task IDs within the varaible currentTasksIdsForProcessArray

ResultPage currentTasksForProcessResultPage = pes.getCurrentTasksForProcess(processId, type, startIndex, batchSize, sortBy, sortOrder);
TaskSummary[] currentTasksForProcess = (TaskSummary[])currentTasksForProcessResultPage.getResults();
List<Long> currentTasksIdsForProcessList = new ArrayList<Long>();
for (TaskSummary taskSummary : currentTasksForProcess) {
currentTasksIdsForProcessList.add(taskSummary.getId());
}
Long[] currentTasksIdsForProcessArray = currentTasksIdsForProcessList.toArray(new Long[0]);

RE: How do we get the next task Id of a User Input Task. This has to be entered in t

aneeshv713 — Tue, 15 Jul 2014 23:53:08 GMT

I resolved this error but quick question :-

You said , you can do --> TaskSummary[] currentTasksForProcess = (TaskSummary[])currentTasksForProcessResultPage.getResults();

But there is no return type by the type TaskSummary[] and type casting to a Long[] does not work either? Then how do we get the task ids as a array of integers?

RE: How do we get the next task Id of a User Input Task. This has to be entered in t

aneeshv713 — Tue, 15 Jul 2014 22:51:45 GMT

I am getting a null pointer exception when I put the following code with the interface implementation of processExecutionService

Long[] currentTasksForProcess = new Long[100];
ProcessExecutionService processExecutionService = new ProcessExecutionService() {

                              @Override
                              public void setServiceContext(ServiceContext arg0) {
                                        // TODO Auto-generated method stub

                              }
ResultPage resultPage;
resultPage = processExecutionService.getCurrentTasksForProcess(processID, com.appiancorp.suiteapi.process.ProcessExecutionService.UNATTENDED_AND_ATTENDED_TASKS, 1, 10, TaskSummary.SORT_BY_ID, Constants.SORT_ORDER_ASCENDING);
                              currentTasksForProcess = (Long[])resultPage.getResults();

What could be the root cause of this null pointer exception?

Is processExecutionService() null or currentTasksForProcess() .

The error is at line 1787 which is this:-

resultPage = processExecutionService.getCurrentTasksForProcess(processID, com.appiancorp.suiteapi.process.ProcessExecutionService.UNATTENDED_AND_ATTENDED_TASKS, 1, 10, TaskSummary.SORT_BY_ID, Constants.SORT_ORDER_ASCENDING);
                              currentTasksForProcess = (Long[])resultPage.getResults();

RE: How do we get the next task Id of a User Input Task. This has to be entered in t

Eduardo Fuentes — Thu, 10 Jul 2014 04:08:12 GMT

Oh I know what you mean, when I said "sure" I meant that I was going to provide the two lines to explain how you convert a ResultPage into a TaskSummary[], not that I had a built example, sorry for the confusion.

RE: How do we get the next task Id of a User Input Task. This has to be entered in t

Eduardo Fuentes — Thu, 10 Jul 2014 00:27:30 GMT

It seems you missed my last post, the relevant code for you to build your plugin is in there.

There are no plans on my end to create a plugin to be shared since you need to adapt it to your specific needs.

RE: How do we get the next task Id of a User Input Task. This has to be entered in t

aneeshv713 — Wed, 09 Jul 2014 23:11:42 GMT

Hi Eduardo, any update on the plugin?

RE: How do we get the next task Id of a User Input Task. This has to be entered in t

Eduardo Fuentes — Fri, 04 Jul 2014 08:23:26 GMT

Sure! Actually for any ResultPage you just need to look at the API Docs to determine what cast you need. Since according to the Java Docs the getCurrentTasksForProcess returns a ResultPage of TaskSummary objects you just need to call its getResults() method and then cast that to an array of TaskSummary

TaskSummary[] currentTasksForProcess = (TaskSummary[])currentTasksForProcessResultPage.getResults();

RE: How do we get the next task Id of a User Input Task. This has to be entered in t

aneeshv713 — Thu, 03 Jul 2014 17:56:15 GMT

Do you have any sample plugin code to this? The return type for the getCurrentTasksForProcess is a ResultPage.I am not sure how to convert a ResultPage into an Integer type to get tasksids as an integer?

RE: How do we get the next task Id of a User Input Task. This has to be entered in t

Eduardo Fuentes — Thu, 03 Jul 2014 05:07:12 GMT

You can send the email after the task is instantiated (e.g. a paralel flow one that goes to the task to instantiate it, one that goes to a timer to wait for the task to be instantiated).

The flow that has the timer would then go to a script task that can call a custom function you will have to create (forum.appian.com/.../ProcessExecutionService.html, int, int, int, java.lang.Integer, java.lang.Integer) to get the current tasks for process and based on your business logic get the desired task from that process then pass that information to the Send Email node.

RE: How do we get the next task Id of a User Input Task. This has to be entered in t

aneeshv713 — Thu, 03 Jul 2014 05:01:58 GMT

We want to disable the alerts and then use a Send Email Node before the actual task and provide an actual link to the task rather than just a link to the Tempo Interface. This way when the user clicks on the link, he lands directly on the exact task rather than on a specific tab. How do we achieve this?

RE: How do we get the next task Id of a User Input Task. This has to be entered in t

Eduardo Fuentes — Thu, 03 Jul 2014 04:59:15 GMT

Tasks do not have an ID until they are instantiated. You cannot "predict" what the next task ID will be.