com.espertech.esper.epl.agg.aggregator
Class AggregatorStddevFilter

java.lang.Object
  extended by com.espertech.esper.epl.agg.aggregator.AggregatorStddev
      extended by com.espertech.esper.epl.agg.aggregator.AggregatorStddevFilter
All Implemented Interfaces:
AggregationMethod

public class AggregatorStddevFilter
extends AggregatorStddev

Standard deviation always generates double-typed numbers.


Field Summary
 
Fields inherited from class com.espertech.esper.epl.agg.aggregator.AggregatorStddev
numDataPoints, sum, sumSq
 
Constructor Summary
AggregatorStddevFilter()
           
 
Method Summary
 void enter(java.lang.Object parameters)
          Apply the value as entering aggregation (entering window).
 void leave(java.lang.Object parameters)
          Apply the value as leaving aggregation (leaving window).
 
Methods inherited from class com.espertech.esper.epl.agg.aggregator.AggregatorStddev
clear, getValue, getValueType
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

AggregatorStddevFilter

public AggregatorStddevFilter()
Method Detail

enter

public void enter(java.lang.Object parameters)
Description copied from interface: AggregationMethod
Apply the value as entering aggregation (entering window).

The value can be null since 'null' values may be counted as unique separate values.

Specified by:
enter in interface AggregationMethod
Overrides:
enter in class AggregatorStddev
Parameters:
parameters - to add to aggregate

leave

public void leave(java.lang.Object parameters)
Description copied from interface: AggregationMethod
Apply the value as leaving aggregation (leaving window).

The value can be null since 'null' values may be counted as unique separate values.

Specified by:
leave in interface AggregationMethod
Overrides:
leave in class AggregatorStddev
Parameters:
parameters - to remove from aggregate

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