Retrieve history of work item states

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= &#40;WorkItemClient&#41; repository.getClientLibrary&#40;WorkItemClient.class&#41;;

IWorkItemClient iWiClient = &#40;IWorkItemClient&#41; repository.getClientLibrary&#40;IWorkItemClient.class&#41;;

IWorkItem workItem = iWiClient.findWorkItemById&#40;defectId, IWorkItem.FULL_PROFILE, monitor&#41;;

			

List&lt;ChangeLogDTO&gt; log = workItemClient.computeWorkItemHistory&#40;workItem, monitor&#41;;

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

3 answers

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0	permanent link sam detweiler (12.5k●6●191●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●31●56) | 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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