rally - Using the LookbackAPI to find Scope Change -


is there way query using lookbackapi find stories (hierarchicalrequirement) had change planestimate date (say week ago) today?

or best way find stories on given date in past , return planestimate , unformatedid fields, , compare them current planestimate each story of today?

each lbapi snapshot have _previousvalues collection. each lbapi snapshot, if field has changed prior snapshot, _previousvalues collection hydrated value. in other words, if planestimate has not changed between snapshots, there no planestimate entry in _previousvalues collection snapshot. thus, planestimate, following query:

find: {     "_typehierarchy" : "hierarchicalrequirement",     "_previousvalues.planestimate" : {$exists: true},     "_validfrom": {         $gte: "2013-01-01t00:00:00.000z",         $lt: "2013-05-01t00:00:00.000z"     } }

should provide hierarchicalrequirement snapshots corresponding change in planestimate 2013-05-01 2013-05-10.


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