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Why getOrigin() returns null on the server side

Dmitry A. Lesin (23412960) | asked Apr 01 '14, 9:34 a.m.
edited Apr 01 '14, 9:37 a.m.
I can not go through an initial problem getting a reference to current repository object. I need it to get the additional libraries which could help me to work with workitem attributes. I try to get the repository object in this way:

...IWorkItem wi...
ITeamRepository repo = (ITeamRepository) wi.getOrigin();

I tried next services as prerequisites in plugin.xml:

<requiredService interface=""/>
<requiredService interface=""/>
<requiredService interface=""/>   
<requiredService interface=""/>        
<requiredService interface=""/>
<requiredService interface=""/>
<requiredService interface=""/>

But every time, I get null instead of an existing object! And the question is, which service could be declared to get non null repository object?

Thank you in advance!

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sam detweiler (12.4k6177201) | answered Apr 01 '14, 9:54 a.m.
 because your plugin extends AbstractSerivce you have access to methods to load other libraries

fWorkItemServer = getService(IWorkItemServer.class);
fAuditableCommon = getService(IAuditableCommon.class);
fcontributorService = getService(IContributorService.class);
fProcessServerService = getService(IProcessServerService.class);
fQueryService = getService(IQueryService.class);
fItemService = getService(IRepositoryItemService.class);
Dmitry A. Lesin selected this answer as the correct answer

Dmitry A. Lesin commented Apr 01 '14, 10:33 a.m.

Thank you!
But in this case, is there a way to get non null team repository object with some another library? How can I get not null getOrigin?

Tim Mok commented Apr 01 '14, 10:44 a.m.

It's possible that the origin wasn't set for the item. The documentation states it can return null if the origin is unknown.

sam detweiler commented Apr 01 '14, 10:49 a.m.

Also, why do you need it? you have access to all the service you could want, as you are running IN the repository 

Dmitry A. Lesin commented Apr 01 '14, 11:02 a.m. | edited Apr 01 '14, 11:02 a.m.

The plugin is an RTC follow-up action trigger which is called on saving a workitem. As for me, I need only to get a "FoundIn" attribute for a typical defect from Scrum process. I'm investigating a way like this:

IWorkItemClient client = (IWorkItemClient) repo.getClientLibrary(IWorkItemClient.class);
if (projectArea != null) {
        IAttribute filedAgainst = client.findAttribute(projectArea, IWorkItem.FOUND_IN_PROPERTY, monitor);

But client variable requires repo parameter which I can not get now. May be my way is wrong, isn't it?  :(

I tried getOrigin() for current workitem and process area. Everywhere, it's null! But how can it be null, if I already connected to the repository?  :( :( :(

sam detweiler commented Apr 01 '14, 11:08 a.m. | edited Apr 01 '14, 11:09 a.m.

doesn't work the same in server side. 

private IWorkItemServer fWorkItemServer = getService(IWorkItemServer.class);
fWorkItemServer.findAttribute(projectArea, IWorkItem.FOUND_IN_PROPERTY, monitor); 

Dmitry A. Lesin commented Apr 01 '14, 11:50 a.m. | edited Apr 01 '14, 11:52 a.m.

Thank you very much! It really works. Finally produced code with getting the value for "FoundIn" attribute is next:

        ...IWorkItem wi...

        IWorkItemServer fWorkItemServer = getService(IWorkItemServer.class);
        IAttribute attr_foundIn = fWorkItemServer.findAttribute(projectArea,
                IWorkItem.FOUND_IN_PROPERTY, monitor);
        IDeliverableHandle wi_foundIn = (IDeliverableHandle) wi.getValue(attr_foundIn);
        IDeliverable foundIn = (IDeliverable) itemService.fetchItem(wi_foundIn,
        ... = foundIn.getName();

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