Given a certain product backlog id, I want to programmatically retrieve a list of tasks that are child to the PBI.
I am aware that there's not one field in the task that says "Parent PBI Id". I have a version of code that is working, but that's really really slow, since I have do perform part of my filtering int the client.
See how I'm currently doing:
string wiqlQuery =
string.Format(
"Select ID, [Remaining Work], State " +
"from WorkItems " +
"where (([Work Item Type] = 'Task')" +
" AND ([Iteration Path] = '{0}' )" +
" AND (State <> 'Removed')" +
" AND (State <> 'Done')) ",
sprint, storyId);
// execute the query and retrieve a collection of workitems
WorkItemCollection workItems = wiStore.Query(wiqlQuery);
if (workItems.Count <= 0)
return null;
var result = new List<TaskViewModel>();
foreach (WorkItem workItem in workItems)
{
var relatedLink = workItem.Links[0] as RelatedLink;
if (relatedLink == null) continue;
if (relatedLink.RelatedWorkItemId != storyId) continue;
Field remWorkField = (from field in workItem.Fields.Cast<Field>()
where field.Name == "Remaining Work"
select field).FirstOrDefault();
if (remWorkField == null) continue;
if (remWorkField.Value == null) continue;
var task = new TaskViewModel
{
Id = workItem.Id,
ParentPbi = relatedLink.RelatedWorkItemId,
RemainingWork = (double) remWorkField.Value,
State = workItem.State
};
result.Add(task);
}
return result;
As a standard, team project in MSF Agile comes with a set of queries. Take a look at 'Work Items' -> 'Iteration 1' -> 'Iteration Backlog'.
Saving this query as WIQL file in your disk is absolutely possible.
Using it as a modified wiqlQuery
should relieve you from a lot of the filtering you do.
EDIT (in response to comment: "Ok, I did that, but the query doesn't mention the relationship between parent and linked (child) items"):
I opened the WIQL of a default "Iteration Backlog":
<?xml version="1.0" encoding="utf-8"?>
<WorkItemQuery Version="1">
<TeamFoundationServer>
http://****>
<TeamProject>****</TeamProject>
<Wiql>SELECT [System.Id], [System.WorkItemType], [System.Title],
[System.State], [System.AssignedTo],
[Microsoft.VSTS.Scheduling.RemainingWork],
[Microsoft.VSTS.Scheduling.CompletedWork],
[Microsoft.VSTS.Scheduling.StoryPoints],
[Microsoft.VSTS.Common.StackRank],
[Microsoft.VSTS.Common.Priority],
[Microsoft.VSTS.Common.Activity], [System.IterationPath],
[System.AreaPath] FROM WorkItemLinks WHERE
(Source.[System.TeamProject] = @project and
Source.[System.AreaPath] under @project and
Source.[System.IterationPath] under '****\Iteration 1' and
(Source.[System.WorkItemType] = 'User Story' or
Source.[System.WorkItemType] = 'Task')) and
[System.Links.LinkType] = 'System.LinkTypes.Hierarchy-Forward'
and Target.[System.WorkItemType] = 'Task' ORDER BY
[Microsoft.VSTS.Common.StackRank],
[Microsoft.VSTS.Common.Priority] mode(Recursive)</Wiql>
</WorkItemQuery>
The part of the query that retrieves the related items should be this
[System.Links.LinkType] = 'System.LinkTypes.Hierarchy-Forward'