org.openjdk.jmc.common.item

Class Aggregators.AdvancedMinMaxConsumer<V,T extends Comparable<T>>

java.lang.Object

org.openjdk.jmc.common.item.Aggregators.AdvancedMinMaxConsumer<V,T>

Type Parameters:

V - the return value type, for example java.lang.String

T - the value type for the ordering

All Implemented Interfaces:

IItemConsumer<Aggregators.AdvancedMinMaxConsumer<V,T>>

Enclosing class:

Aggregators

public static class Aggregators.AdvancedMinMaxConsumer<V,T extends Comparable<T>>
extends Object
implements IItemConsumer<Aggregators.AdvancedMinMaxConsumer<V,T>>

This consumer separates the attribute for which to do the ordering from the attribute to use for accessing the value. It is typically used within the AdvancedMinMaxAggregator for getting a specific value from the first or last event from a collection of events.

Constructor Summary

Constructors

Constructor and Description
AdvancedMinMaxConsumer(IMemberAccessor<? extends V,IItem> valueAccessor, IMemberAccessor<T,IItem> comparatorAccessor, boolean max)

Method Summary

Modifier and Type	Method and Description
void	consume(IItem newItem) Consumes another item.
V	getValue()
Aggregators.AdvancedMinMaxConsumer<V,T>	merge(Aggregators.AdvancedMinMaxConsumer<V,T> other) Merges this object with the supplied object.

Methods inherited from class java.lang.Object

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

Constructor Detail

AdvancedMinMaxConsumer

public AdvancedMinMaxConsumer(IMemberAccessor<? extends V,IItem> valueAccessor,
                              IMemberAccessor<T,IItem> comparatorAccessor,
                              boolean max)

Parameters:

valueAccessor - the accessor for retrieving the value

comparatorAccessor - the accessor for retrieving the value to use for comparisons

max - whether to use the smallest value, or the greatest

Method Detail

consume

public void consume(IItem newItem)

Description copied from interface: IItemConsumer

Consumes another item.

Specified by:

consume in interface IItemConsumer<Aggregators.AdvancedMinMaxConsumer<V,T extends Comparable<T>>>

merge

public Aggregators.AdvancedMinMaxConsumer<V,T> merge(Aggregators.AdvancedMinMaxConsumer<V,T> other)

Description copied from interface: IItemConsumer

Merges this object with the supplied object. Normally this is another item consumer of the same type and the output result is a consumer with an internal state that reflects the state of both the current consumer and the input value.

Specified by:

merge in interface IItemConsumer<Aggregators.AdvancedMinMaxConsumer<V,T extends Comparable<T>>>

Parameters:

other - another instance to merge with

Returns:

the merged instance

getValue

public V getValue()