////////////////////////////////////////////////////////////////////////////////
//
// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You under the Apache License, Version 2.0
// (the "License"); you may not use this file except in compliance with
// the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
////////////////////////////////////////////////////////////////////////////////
package mx.olap.aggregators
{
import mx.olap.IOLAPCustomAggregator;
/**
* The MaxAggregator class implements the maximum aggregator.
* The maximum aggregator returns the maximum value of all measures.
* Flex uses this aggregator when you set the OLAPMeasure.aggregator
property
* to "MAX"
.
*
* @see mx.olap.OLAPMeasure
*
* @langversion 3.0
* @playerversion Flash 9
* @playerversion AIR 1.1
* @productversion Flex 3
*/
public class MaxAggregator implements IOLAPCustomAggregator
{
//--------------------------------------------------------------------------
//
// Methods
//
//--------------------------------------------------------------------------
// max functions.
/**
* @inheritDoc
*
* @langversion 3.0
* @playerversion Flash 9
* @playerversion AIR 1.1
* @productversion Flex 3
*/
public function computeBegin(dataField:String):Object
{
var newObj:Object = {};
newObj[dataField] = -Number.MAX_VALUE;
return newObj;
}
/**
* @inheritDoc
*
* @langversion 3.0
* @playerversion Flash 9
* @playerversion AIR 1.1
* @productversion Flex 3
*/
public function computeLoop(data:Object, dataField:String, rowData:Object):void
{
var value:Number = rowData[dataField];
if (typeof(value) == "xml")
value = Number(value.toString());
if (!data.hasOwnProperty(dataField))
data[dataField] = value;
else
data[dataField] = data[dataField] > value ? data[dataField] : value;
}
/**
* @inheritDoc
*
* @langversion 3.0
* @playerversion Flash 9
* @playerversion AIR 1.1
* @productversion Flex 3
*/
public function computeEnd(data:Object, dataField:String):Number
{
return data[dataField];
}
/**
* @inheritDoc
*
* @langversion 3.0
* @playerversion Flash 9
* @playerversion AIR 1.1
* @productversion Flex 3
*/
public function computeObjectBegin(value:Object):Object
{
var newObj:Object = {};
for (var p:String in value)
{
newObj[p] = value[p];
}
return newObj;
}
/**
* @inheritDoc
*
* @langversion 3.0
* @playerversion Flash 9
* @playerversion AIR 1.1
* @productversion Flex 3
*/
public function computeObjectLoop(oldValue:Object, newValue:Object):void
{
for (var p:String in newValue)
{
oldValue[p] = oldValue[p] > newValue[p] ? oldValue[p] : newValue[p];
}
}
/**
* @inheritDoc
*
* @langversion 3.0
* @playerversion Flash 9
* @playerversion AIR 1.1
* @productversion Flex 3
*/
public function computeObjectEnd(oldValue:Object, dataField:String):Number
{
return oldValue[dataField];
}
}
}