net.sf.ehcache.search.aggregator
Class Min<T>

java.lang.Object
  net.sf.ehcache.search.aggregator.Min<T>

Type Parameters:

T -

All Implemented Interfaces:

AggregatorInstance<T>

public class Min<T>
extends Object
implements AggregatorInstance<T>

Determine the minimum value

Author:

teck

Constructor Summary

Min(Attribute<?> attribute)

Method Summary

void	accept(Object input) Add the given value to the aggregator function
T	aggregateResult() Retrieve the final result
Attribute	getAttribute() Get the attribute to pass to aggregator

Methods inherited from class java.lang.Object

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

Constructor Detail

Min

public Min(Attribute<?> attribute)

Parameters:

attribute -

Method Detail

aggregateResult

public T aggregateResult()

Retrieve the final result

NOTE: May return null if no input provided

Specified by:

aggregateResult in interface AggregatorInstance<T>

Returns:

aggregate result

accept

public void accept(Object input)
            throws AggregatorException

Add the given value to the aggregator function

NOTE: null input values are ignored

Specified by:

accept in interface AggregatorInstance<T>

Parameters:

input - a single input value

Throws:

AggregatorException - if the function cannot be computed, possibly due to unsupported types

getAttribute

public Attribute getAttribute()

Get the attribute to pass to aggregator

Specified by:

getAttribute in interface AggregatorInstance<T>

Returns:

attribute to aggregate (null if no attribute is applicable to function)