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question asked: Feb 14 '12, 4:55 p.m.
question was seen: 4,497 times
last updated: Jun 18 '12, 5:39 a.m.

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Retrieve history of work item states

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Steve Gates (91●3●4) | asked Feb 14 '12, 4:55 p.m.
I have the following code to begin retrieving the history of a work item using the plain java client. 


WorkItemClient workItemClient= (WorkItemClient) repository.getClientLibrary(WorkItemClient.class);

IWorkItemClient iWiClient = (IWorkItemClient) repository.getClientLibrary(IWorkItemClient.class);

IWorkItem workItem = iWiClient.findWorkItemById(defectId, IWorkItem.FULL_PROFILE, monitor);

			

List<ChangeLogDTO> log = workItemClient.computeWorkItemHistory(workItem, monitor);


The issue I'm running into is that the last line of the snippet is throwing a null pointer exception. Not exactly sure why I'm getting that and hoping someone here would have some insight or if there's a better way.

Steve

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sam detweiler (12.5k●6●195●201) | answered Feb 15 '12, 12:33 a.m.
what is 'defectId'?

the findWorkItemById is failing..

Sam
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Steve Gates (91●3●4) | answered Feb 15 '12, 9:19 a.m.
what is 'defectId'?

the findWorkItemById is failing..

Sam


'defectId' is an int with a value of 7976, which is a valid work item ID in our database.

findWorkItemById is not failing because I can get the various values of the work item that are available with the workItem object, such as description, summary, etc.
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SEC Servizi (971●2●36●60) | answered Jun 18 '12, 5:28 a.m.
edited Jun 18 '12, 5:39 a.m.
You get a NullPointerException because you cannot get an instance of the WorkItemClient.class with:
WorkItemClient  workItemClientInternal = (WorkItemClient) repository.getClientLibrary(WorkItemClient.class);
You have to use the constructor method:
WorkItemClient workItemClientInternal = new WorkItemClient((IClientLibraryContext) repo);
and where repo is your ITeamRepository current instance.
Cheers.

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