/// <summary>
/// Adds up all the values that need aggregating
/// </summary>
/// <returns>true if a change was made. False if not</returns>
private static bool NumericAggregation(IEnumerable<WorkItem> sourceWorkItems, WorkItem targetWorkItem, ConfigAggregatorItem configAggregatorItem)
{
double aggregateValue = 0;
// 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)
{
double sourceValue = sourceWorkItem.GetField(sourceField.Name, 0.0);
aggregateValue = configAggregatorItem.Operation.Perform(aggregateValue, sourceValue);
}
}
if (aggregateValue != targetWorkItem.GetField<double>(configAggregatorItem.TargetItem.Name, 0))
{
targetWorkItem[configAggregatorItem.TargetItem.Name] = aggregateValue;
return true;
}
return false;
}