/// <summary>
/// Checks to see if all of the source fields values are in one of the mappings.
/// The first mapping that is found that is a match is used. It will apply the target value from the mapping to
/// the Target Field.
/// </summary>
/// <returns>true if a change was made. False if not</returns>
private static bool StringAggregation(IEnumerable<WorkItem> sourceWorkItems, WorkItem targetWorkItem, ConfigAggregatorItem configAggregatorItem)
{
string aggregateValue = "";
bool aggregateFound = false;
// Iterate through the mappings until (or if) we find one that we match on
foreach (Mapping mapping in configAggregatorItem.Mappings)
{
bool mappingMatches;
// The default value depends on the inclusivity of the mappings.
// If it is And then we are trying to prove that all of them match so we start with true, any mismatches will cause us to set to false.
// If it is Or then we are trying to prove that only one them match to succeed so we start with false, any matches will cause us to set to true.
if (mapping.Inclusive)
mappingMatches = true;
else
mappingMatches = false;
// Iterate through all of the work items that we are pulling data from.
// For link type of "Self" this will be just one item. For "Parent" this will
// be all of the co-children of the work item sent in the event.
foreach (WorkItem sourceWorkItem in sourceWorkItems)
{
// Iterate through all of the TFS Fields that we are aggregating.
foreach (ConfigItemType sourceField in configAggregatorItem.SourceItems)
{
// Get the value of the sourceField on the sourceWorkItem
string sourceValue = sourceWorkItem.GetField(sourceField.Name, "");
// Check to see if the value we have is not in the list of SourceValues
// If it is not then this mapping is not going to be satisfied because this source item
// breaks it (because we are inclusively checking (i.e. "And")).
if (!mapping.SourceValues.Contains(sourceValue) &&(mapping.Inclusive))
{
// it was not in the list. We are done with this mapping.
// if we get here then this is an "And" mapping that failed.
mappingMatches = false;
break;
}
// Check to see if the value we have is in the list of SourceValues
// If it is, this mapping is satisfied because we are non inclusive (i.e. "Or")
if (mapping.SourceValues.Contains(sourceValue) && (!mapping.Inclusive))
{
// it was in the list. We are done with this mapping.
// If we get here then this was an "Or" mapping that succeeded
mappingMatches = true;
break;
}
}
// If this is an "And" and mapping does not match then we may as well be done with this iteration of work items.
if ((!mappingMatches) && (mapping.Inclusive))
break;
// If this is an "Or" and mapping does match then we need to be done.
if ((mappingMatches) && (!mapping.Inclusive))
break;
}
// If the mapping matched then we are done looking
if (mappingMatches)
{
aggregateValue = mapping.TargetValue;
aggregateFound = true;
break;
}
}
if (aggregateFound)
{
// see if we need to make a change:
if (targetWorkItem[configAggregatorItem.TargetItem.Name].ToString() != aggregateValue)
{
// If this is the "State" field then we may have do so special stuff
// (to get the state they want from where we are). If not then just set the value.
if (configAggregatorItem.TargetItem.Name != "State")
targetWorkItem[configAggregatorItem.TargetItem.Name] = aggregateValue;
else
targetWorkItem.TransitionToState(aggregateValue, "TFS Aggregator: ");
return true;
}
}
return false;
}