(Preview)
Package | mx.collections |
Class | public class SummaryField2 |
Inheritance | SummaryField2 ![]() |
Language Version: | ActionScript 3.0 |
Product Version: | Flex 4 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
Note: In the previous release of Flex, you used the SummaryField class to create summary data. The SummaryField2 class is new for Flex 4 and provides better performance than SummaryField.
Use the dataField
property to specify the data field used to generate the summary,
the label
property to specify the name of the data field created to hold the summary data,
and the summaryOperation
property to specify how to create the summary for numeric fields.
You can specify one of the following values:
SUM
, MIN
, MAX
, AVG
, or COUNT
.
The following example creates summary rows based on two fields of the data provider of the AdvancedDataGrid control:
<mx:AdvancedDataGrid id="myADG" initialize="gc.refresh();"> <mx:dataProvider> <mx:GroupingCollection id="gc" source="{dpFlat}"> <mx:Grouping> <mx:GroupingField name="Region"> <mx:summaries> <mx:SummaryRow summaryPlacement="group"> <mx:fields> <mx:SummaryField2 dataField="Actual" label="Min Actual" summaryOperation="MIN"/> <mx:SummaryField2 dataField="Actual" label="Max Actual" summaryOperation="MAX"/> </mx:fields> </mx:SummaryRow> </mx:summaries> </mx:GroupingField> <mx:GroupingField name="Territory"> <mx:summaries> <mx:SummaryRow summaryPlacement="group"> <mx:fields> <mx:SummaryField2 dataField="Actual" label="Min Actual" summaryOperation="MIN"/> <mx:SummaryField2 dataField="Actual" label="Max Actual" summaryOperation="MAX"/> </mx:fields> </mx:SummaryRow> </mx:summaries> </mx:GroupingField> </mx:Grouping> </mx:GroupingCollection> </mx:dataProvider> <mx:columns> <mx:AdvancedDataGridColumn dataField="Region"/> <mx:AdvancedDataGridColumn dataField="Territory_Rep" headerText="Territory Rep"/> <mx:AdvancedDataGridColumn dataField="Actual"/> <mx:AdvancedDataGridColumn dataField="Estimate"/> <mx:AdvancedDataGridColumn dataField="Min Actual"/> <mx:AdvancedDataGridColumn dataField="Max Actual"/> </mx:columns> </mx:AdvancedDataGrid>MXML Syntax
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The
<mx.SummaryField2>
inherits all the tag attributes of its superclass,
and defines the following tag attributes:
<mx:SummaryField2 Properties dataField="No default" label="No default" summaryOperation="SUM" />
More examples
Related API Elements
Public Properties
Property | Defined By | ||
---|---|---|---|
![]() | constructor : Object
A reference to the class object or constructor function for a given object instance. | Object |
Public Methods
Method | Defined By | ||
---|---|---|---|
![]() |
Indicates whether an object has a specified property defined. | Object | |
![]() |
Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | |
![]() |
Indicates whether the specified property exists and is enumerable. | Object | |
![]() |
Sets the availability of a dynamic property for loop operations. | Object | |
![]() |
Returns the string representation of this object, formatted according to locale-specific conventions. | Object | |
![]() |
Returns the string representation of the specified object. | Object | |
![]() |
Returns the primitive value of the specified object. | Object |
Wed Nov 21 2018, 06:34 AM -08:00