--- In [email protected], "Tom McNeer" <[EMAIL PROTECTED]> wrote: > > Okay, I'm back already. > > Here's what I don't understand: I'm using an ArrayCollection as the dp to a > GroupingCollection -- and I know that GroupingCollection subclasses > HierarchicalData. > > Instead of subclassing HierarchicalData directly, should I subclass > GroupingCollection, with the same overridden methods? > > Here's what I'm working with: > > <mx:GroupingCollection id="divGrouping" > source="{acJobsInProgress}"> > <mx:Grouping> > <mx:GroupingField name="DivisionTypeName"> > <mx:SummaryRow summaryPlacement="group"> > <mx:SummaryField dataField="BudgetItemTotal" > label="Cum Ttl" operation="SUM"/> > </mx:SummaryRow> > </mx:GroupingField> > <mx:GroupingField name="Estimator"> > <mx:SummaryRow summaryPlacement="group"> > <mx:SummaryField dataField="BudgetItemTotal" > label="Cum Ttl" operation="SUM"/> > </mx:SummaryRow> > </mx:GroupingField> > <mx:GroupingField name="JobName" > > <mx:SummaryRow summaryPlacement="group"> > <mx:SummaryField dataField="BudgetItemTotal" > label="Cum. Total" operation="SUM"/> > </mx:SummaryRow> > </mx:GroupingField> > </mx:Grouping> > </mx:GroupingCollection>
SummaryField has a summaryFunction property that may do what you want, and if not, GroupingField has a groupingFunction property that may help. Not sure if there are any examples that use these for manipulating dates, but they look like they might be useful.
