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

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

All Implemented Interfaces:

AggregationMethod

public class AggregatorLeaving
extends java.lang.Object
implements AggregationMethod

For testing if a remove stream entry has been present.

Field Summary

protected boolean

leaving

Constructor Summary

AggregatorLeaving()

Method Summary

void	clear() Clear out the collection.
void	enter(java.lang.Object value) 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 value) 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

leaving

protected boolean leaving

Constructor Detail

AggregatorLeaving

public AggregatorLeaving()

Method Detail

enter

public void enter(java.lang.Object value)

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:

value - to add to aggregate

leave

public void leave(java.lang.Object value)

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:

value - to remove from aggregate

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

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

clear

public void clear()

Description copied from interface: AggregationMethod

Clear out the collection.

Specified by:

clear in interface AggregationMethod