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

java.lang.Object
  com.espertech.esper.epl.agg.aggregator.AggregatorRateEver

All Implemented Interfaces:

AggregationMethod

public class AggregatorRateEver
extends java.lang.Object
implements AggregationMethod

Aggregation computing an event arrival rate for with and without data window.

Field Summary

protected boolean	hasLeave
protected long	interval
protected java.util.ArrayDeque<java.lang.Long>	points
protected TimeProvider	timeProvider

Constructor Summary

AggregatorRateEver(long interval, TimeProvider timeProvider)
Ctor.

Method Summary

void	clear() Clear out the collection.
void	enter(java.lang.Object object) Apply the value as entering aggregation (entering window).
java.lang.Object	getValue() Returns the current value held.
java.lang.Class	getValueType() Returns the type of the current value.
void	leave(java.lang.Object object) Apply the value as leaving aggregation (leaving window).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

interval

protected final long interval

points

protected final java.util.ArrayDeque<java.lang.Long> points

hasLeave

protected boolean hasLeave

timeProvider

protected final TimeProvider timeProvider

Constructor Detail

AggregatorRateEver

public AggregatorRateEver(long interval,
                          TimeProvider timeProvider)

Ctor.

Parameters:

interval - rate interval

timeProvider - time

Method Detail

clear

public void clear()

Description copied from interface: AggregationMethod

Clear out the collection.

Specified by:

clear in interface AggregationMethod

enter

public void enter(java.lang.Object object)

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

Parameters:

object - to add to aggregate

leave

public void leave(java.lang.Object object)

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

Parameters:

object - to remove from aggregate

getValue

public java.lang.Object getValue()

Description copied from interface: AggregationMethod

Returns the current value held.

Specified by:

getValue in interface AggregationMethod

Returns:

current value

getValueType

public java.lang.Class getValueType()

Description copied from interface: AggregationMethod

Returns the type of the current value.

Specified by:

getValueType in interface AggregationMethod

Returns:

type of values held