Apache Flex 4.16.0 API Reference | All Packages | All Classes | Index | Frames No Frames |
SummaryField

Package | mx.collections
Class | public class SummaryField
Inheritance | SummaryField Object

Deprecated Since 4.0: Please Use SummaryField2

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

The SummaryField class represents a single property in a SummaryRow instance. Each SummaryRow instance specifies one or more SummayField instances that are used to create a data summary.

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 `operation` 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:SummaryField dataField="Actual"
                        label="Min Actual" operation="MIN"/>
                      <mx:SummaryField dataField="Actual"
                        label="Max Actual" operation="MAX"/>
                    </mx:fields>
                  </mx:SummaryRow>
                </mx:summaries>
              </mx:GroupingField>
              <mx:GroupingField name="Territory">
                <mx:summaries>
                  <mx:SummaryRow summaryPlacement="group">
                    <mx:fields>
                      <mx:SummaryField dataField="Actual"
                        label="Min Actual" operation="MIN"/>
                      <mx:SummaryField dataField="Actual"
                        label="Max Actual" operation="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>

This Class has been deprecated and replaced by a new Class `SummaryField2`. Properties `operation` and `summaryFunction` are not present in the Class `SummaryField2`. A new property `summaryOperation` is introduced in `SummaryField2`.

See also

mx.controls.AdvancedDataGrid
mx.collections.GroupingField
mx.collections.SummaryRow

Public Properties

| Property | Defined By
--- | --- | ---
|  | dataField : String Data field for which the summary is computed. | SummaryField
|  | label : String The property used inside the summary object, an instance of the SummaryObject class, to hold summary information. | SummaryField
|  | operation : String = SUM The function that should be performed on the children. | SummaryField
|  | summaryFunction : Function Specifies a callback function to compute a custom data summary. | SummaryField

Public Methods

| Method | Defined By
--- | --- | ---
|  | SummaryField(dataField:String = null, operation:String = SUM) Constructor. | SummaryField

Property Detail

dataField | property

`public var dataField:String`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

Data field for which the summary is computed.

label | property |

`public var label:String`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

The property used inside the summary object, an instance of the SummaryObject class, to hold summary information.

For example, if you set the `label` property to "Summary", then the computed summary is placed in a property named "Summary" in the summary object. The property of the SummaryObject instance containing the summary data will appear as below:

    {Summary:1000}

See also

mx.collections.SummaryObject
mx.collections.SummaryRow.summaryObjectFunction
summaryFunction

operation | property |

`public var operation:String = SUM`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

The function that should be performed on the children. You can specify one of the following values for numeric fields: `SUM`, `MIN`, `MAX`, `AVG`, or `COUNT`.

The default value is `SUM`.

summaryFunction | property |

`public var summaryFunction:Function`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

Specifies a callback function to compute a custom data summary.

You use this property with the `SummaryRow.summaryObjectFunction` property, which defines an instance of the SummaryObject class used to collect summary data for display in the AdvancedDataGrid control.

The function signature should be as follows:

          function mySummaryFunction(iterator:IViewCursor, dataField:String, operation:String):Object

The built-in summary functions for `SUM`, `MIN`, `MAX`, `AVG`, and `COUNT` all return a Number containing the summary data.

See also

mx.collections.SummaryObject
mx.collections.SummaryRow.summaryObjectFunction
Constructor Detail

SummaryField | () | Constructor

`public function SummaryField(dataField:String = null, operation:String = SUM)`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

Constructor.

Parameters

| `dataField:String` (default = `null`)`` — Data field for which the summary is computed.
| `operation:String` (default = `SUM`)`` — The function that should be performed on the children. You can specify one of the following values for numeric fields: `SUM`, `MIN`, `MAX`, `AVG`, or `COUNT`.

Sun Mar 5 2017, 03:42 PM +11:00