{ "type": "class",
  "qname": "mx.collections.GroupingCollection2",
  "baseClassname": "mx.collections.HierarchicalData"
  ,
    "description": "The GroupingCollection2 class lets you create grouped data from flat data for display in the AdvancedDataGrid control. When you create the instance of the GroupingCollection2 from your flat data, you specify the field or fields of the data used to create the hierarchy.  <p><b>Note: </b>In the previous release of Flex, you used the GroupingCollection class with the AdvancedDataGrid control. The GroupingCollection2 class is new for Flex 4 and provides better performance than GroupingCollection.</p>  <p>To populate the AdvancedDataGrid control with grouped data, you create an instance of the GroupingCollection2 class from your flat data, and then pass that GroupingCollection2 instance to the data provider of the AdvancedDataGrid control. To specify the grouping fields of your flat data, you pass a Grouping instance to the <code>GroupingCollection2.grouping</code> property. The Grouping instance contains an Array of GroupingField instances, one per grouping field. </p>  <p>The following example uses the GroupingCollection2 class to define two grouping fields: Region and Territory.</p>  <pre>\\n &lt;mx:AdvancedDataGrid id=&quot;myADG&quot;\\n &lt;mx:dataProvider&gt;\\n &lt;mx:GroupingCollection2 id=&quot;gc&quot; source=&quot;{dpFlat}&quot;&gt;\\n &lt;mx:grouping&gt;\\n &lt;mx:Grouping&gt;\\n &lt;mx:GroupingField name=&quot;Region&quot;/&gt;\\n &lt;mx:GroupingField name=&quot;Territory&quot;/&gt;\\n &lt;/mx:Grouping&gt;\\n &lt;/mx:grouping&gt;\\n &lt;/mx:GroupingCollection2&gt;\\n &lt;/mx:dataProvider&gt;\\n \\n &lt;mx:columns&gt;\\n &lt;mx:AdvancedDataGridColumn dataField=&quot;Region&quot;/&gt;\\n &lt;mx:AdvancedDataGridColumn dataField=&quot;Territory&quot;/&gt;\\n &lt;mx:AdvancedDataGridColumn dataField=&quot;Territory_Rep&quot;/&gt;\\n &lt;mx:AdvancedDataGridColumn dataField=&quot;Actual&quot;/&gt;\\n &lt;mx:AdvancedDataGridColumn dataField=&quot;Estimate&quot;/&gt;\\n &lt;/mx:columns&gt;\\n &lt;/mx:AdvancedDataGrid&gt;\\n </pre>   The <code>&lt;mx.GroupingCollection2&gt;</code> inherits all the tag attributes of its superclass, and defines the following tag attributes:</p>  <pre>\\n &lt;mx:GroupingCollection2\\n <b>Properties </b>\\n grouping=&quot;<i>No default</i>&quot;\\n source=&quot;<i>No default</i>&quot;\\n summaries=&quot;<i>No default</i>&quot;\\n /&gt;\\n </pre>",
  "tags": [
  {  "tagName": "see",
         "values": ["mx.controls.AdvancedDataGrid", "mx.collections.Grouping", "mx.collections.GroupingField"]},
      {  "tagName": "mxml",
         "values": []},
      {  "tagName": "playerversion",
         "values": ["Flash 10", "AIR 1.5"]},
      {  "tagName": "productversion",
         "values": ["Flex 4"]},
      {  "tagName": "langversion",
         "values": ["3.0"]},
      {  "tagName": "royalesuppresspublicvarwarning",
         "values": []}  ],
  "members": [
  { "type": "method",
        "qname": "mx.collections.GroupingCollection2",
        "namespace": "",
        "bindable": [],
        "details": [],
        "deprecated": {},
          "description": "Constructor.",
        "tags": [
        {  "tagName": "playerversion",
               "values": ["Flash 10", "AIR 1.5"]},
            {  "tagName": "productversion",
               "values": ["Royale 0.9.3"]},
            {  "tagName": "langversion",
               "values": ["3.0"]}  ],
          "return": "",
          "params": []}
      ,
      { "type": "field",
        "qname": "timer",
        "return": "org.apache.royale.utils.Timer",
        "namespace": "protected",
        "bindable": [],
        "details": [],
        "deprecated": {},
          "description": "The timer which is associated with an asynchronous refresh operation. You can use it to change the timing interval, pause the refresh, or perform other actions.  The default value for the <code>delay</code> property of the Timer instance is 1, corresponding to 1 millisecond.",
        "tags": [
        {  "tagName": "playerversion",
               "values": ["Flash 10", "AIR 1.5"]},
            {  "tagName": "productversion",
               "values": ["Royale 0.9.3"]},
            {  "tagName": "langversion",
               "values": ["3.0"]}  ]},
      { "type": "accessor",
        "access": "read-write",
        "return": "mx.collections.Grouping",
        "qname": "grouping",
        "namespace": "public",
        "bindable": [],
        "details": [],
        "deprecated": {},
          "description": "Specifies the Grouping instance applied to the source data. Setting the <code>grouping</code> property does not automatically refresh the view, so you must call the <code>refresh()</code> method after setting this property.",
        "tags": [
        {  "tagName": "see",
               "values": ["mx.collections.GroupingCollection2#refresh()"]},
            {  "tagName": "playerversion",
               "values": ["Flash 10", "AIR 1.5"]},
            {  "tagName": "productversion",
               "values": ["Royale 0.9.3"]},
            {  "tagName": "langversion",
               "values": ["3.0"]}  ]},
      { "type": "field",
        "qname": "summaries",
        "return": "Array",
        "namespace": "public",
        "bindable": [],
        "details": [],
        "deprecated": {},
          "description": "Array of SummaryRow instances that define any root-level data summaries. Specify one or more SummaryRow instances to define the data summaries, as the following example shows:  <pre>\\n &lt;mx:AdvancedDataGrid id=&quot;myADG&quot;\\n width=&quot;100%&quot; height=&quot;100%&quot;\\n initialize=&quot;gc.refresh();&quot;&gt;\\n &lt;mx:dataProvider&gt;\\n &lt;mx:GroupingCollection2 id=&quot;gc&quot; source=&quot;{dpFlat}&quot;&gt;\\n &lt;mx:summaries&gt;\\n &lt;mx:SummaryRow summaryPlacement=&quot;last&quot;&gt;\\n &lt;mx:fields&gt;\\n &lt;mx:SummaryField2 dataField=&quot;Actual&quot;\\n label=&quot;Min Actual&quot; summaryOperation=&quot;MIN&quot;/&gt;\\n &lt;mx:SummaryField2 dataField=&quot;Actual&quot;\\n label=&quot;Max Actual&quot; summaryOperation=&quot;MAX&quot;/&gt;\\n &lt;/mx:fields&gt;\\n &lt;/mx:SummaryRow&gt;\\n &lt;/mx:summaries&gt;\\n &lt;mx:Grouping&gt;\\n &lt;mx:GroupingField name=&quot;Region&quot;/&gt;\\n &lt;mx:GroupingField name=&quot;Territory&quot;/&gt;\\n &lt;/mx:Grouping&gt;\\n &lt;/mx:GroupingCollection2&gt;\\n &lt;/mx:dataProvider&gt;\\n \\n &lt;mx:columns&gt;\\n &lt;mx:AdvancedDataGridColumn dataField=&quot;Region&quot;/&gt;\\n &lt;mx:AdvancedDataGridColumn dataField=&quot;Territory_Rep&quot;\\n headerText=&quot;Territory Rep&quot;/&gt;\\n &lt;mx:AdvancedDataGridColumn dataField=&quot;Actual&quot;/&gt;\\n &lt;mx:AdvancedDataGridColumn dataField=&quot;Estimate&quot;/&gt;\\n &lt;mx:AdvancedDataGridColumn dataField=&quot;Min Actual&quot;/&gt;\\n &lt;mx:AdvancedDataGridColumn dataField=&quot;Max Actual&quot;/&gt;\\n &lt;/mx:columns&gt;\\n &lt;/mx:AdvancedDataGrid&gt;</pre>",
        "tags": [
        {  "tagName": "see",
               "values": ["mx.collections.SummaryRow", "mx.collections.SummaryField2"]},
            {  "tagName": "playerversion",
               "values": ["Flash 10", "AIR 1.5"]},
            {  "tagName": "productversion",
               "values": ["Royale 0.9.3"]},
            {  "tagName": "langversion",
               "values": ["3.0"]}  ]},
      { "type": "accessor",
        "access": "read-write",
        "return": "Object",
        "qname": "source",
        "namespace": "public",
        "bindable": [],
        "details": ["override"],
        "deprecated": {},
          "description": "The source collection containing the flat data to be grouped.  If the source is not a collection, it will be auto-wrapped into a collection.",
        "tags": [
        {  "tagName": "playerversion",
               "values": ["Flash 10", "AIR 1.5"]},
            {  "tagName": "productversion",
               "values": ["Royale 0.9.3"]},
            {  "tagName": "langversion",
               "values": ["3.0"]}  ]},
      { "type": "method",
        "qname": "getRoot",
        "namespace": "public",
        "bindable": [],
        "details": ["override"],
        "deprecated": {},
          "description": "Return <code>super.source</code>, if the <code>grouping</code> property is set, and an ICollectionView instance that refers to <code>super.source</code> if not.",
        "tags": [
        {  "tagName": "playerversion",
               "values": ["Flash 10", "AIR 1.5"]},
            {  "tagName": "productversion",
               "values": ["Royale 0.9.3"]},
            {  "tagName": "return",
               "values": ["The object to return."]},
            {  "tagName": "langversion",
               "values": ["3.0"]}  ],
          "return": "Object",
          "params": []}
      ,
      { "type": "method",
        "qname": "refresh",
        "namespace": "public",
        "bindable": [],
        "details": [],
        "deprecated": {},
          "description": "",
        "tags": [
        {  "tagName": "inheritDoc",
               "values": []},
            {  "tagName": "playerversion",
               "values": ["Flash 10", "AIR 1.5"]},
            {  "tagName": "productversion",
               "values": ["Royale 0.9.3"]},
            {  "tagName": "langversion",
               "values": ["3.0"]}  ],
          "return": "Boolean",
          "params": [{ "name": "async", "type": "Boolean"},
        { "name": "dispatchCollectionEvents", "type": "Boolean"}]}
      ,
      { "type": "method",
        "qname": "cancelRefresh",
        "namespace": "public",
        "bindable": [],
        "details": [],
        "deprecated": {},
          "description": "",
        "tags": [
        {  "tagName": "inheritDoc",
               "values": []},
            {  "tagName": "playerversion",
               "values": ["Flash 10", "AIR 1.5"]},
            {  "tagName": "productversion",
               "values": ["Royale 0.9.3"]},
            {  "tagName": "langversion",
               "values": ["3.0"]}  ],
          "return": "void",
          "params": []}
      ,
      { "type": "method",
        "qname": "getParent",
        "namespace": "protected",
        "bindable": [],
        "details": [],
        "deprecated": {},
          "description": "Returns the parent of a node. The parent of a top-level node is <code>null</code>.   <code>null</code> for a top-level node, and <code>undefined</code> if the parent cannot be determined.",
        "tags": [
        {  "tagName": "param",
               "values": ["node The Object that defines the node."]},
            {  "tagName": "playerversion",
               "values": ["Flash 10", "AIR 1.5"]},
            {  "tagName": "productversion",
               "values": ["Royale 0.9.3"]},
            {  "tagName": "return",
               "values": ["The parent node containing the node as child,"]},
            {  "tagName": "langversion",
               "values": ["3.0"]}  ],
          "return": "*",
          "params": [{ "name": "node", "type": "Object"}]}
      ]
  }