add WIQL sample

src/samples/work_item_tracking.py

@@ -4,6 +4,8 @@
 import datetime
 import logging
 
+from vsts.work_item_tracking.v4_1.models.wiql import Wiql
+
 from samples import resource
 from utils import emit
 
@@ -48,3 +50,29 @@ def get_work_items_as_of(context):
             emit("(work item {0} omitted by server)".format(id_))
 
     return work_items
+
+
+@resource('wiql_query')
+def wiql_query(context):
+    wit_client = context.connection.get_client(
+        "vsts.work_item_tracking.v4_1.work_item_tracking_client.WorkItemTrackingClient")
+
+    wiql = Wiql(query="""
+select [System.Id],
+       [System.WorkItemType],
+       [System.Title],
+       [System.State],
+       [System.AreaPath],
+       [System.IterationPath],
+       [System.Tags]
+from WorkItems
+where [System.TeamProject] = @project
+order by [System.ChangedDate] desc""")
+
+    wiql_result = wit_client.query_by_wiql(wiql)
+
+    emit("Results: {0}".format(len(wiql_result.work_items)))
+    for work_item in wiql_result.work_items:
+        emit("{0} {1}: {2}".format(work_item.fields['System.WorkItemType'],
+                                   work_item.id,
+                                   work_item.fields['System.Title']))