org.openjdk.jmc.common.item

Class Aggregators.AdvancedMinMaxAggregator<V,T extends java.lang.Comparable<T>>

java.lang.Object

org.openjdk.jmc.common.item.Aggregators.AggregatorBase<V,C>

org.openjdk.jmc.common.item.Aggregators.MergingAggregator<V,C>

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

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

Type Parameters:

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

T - the value type for the ordering

All Implemented Interfaces:

IDescribable, IAggregator<V,Aggregators.AdvancedMinMaxConsumer<V,T>>, IItemConsumerFactory<Aggregators.AdvancedMinMaxConsumer<V,T>>, IValueBuilder<V,java.util.Iterator<Aggregators.AdvancedMinMaxConsumer<V,T>>>

Direct Known Subclasses:

Aggregators.AdvancedMaxAggregator, Aggregators.AdvancedMinAggregator

Enclosing class:

Aggregators

private static class Aggregators.AdvancedMinMaxAggregator<V,T extends java.lang.Comparable<T>>
extends Aggregators.FieldAggregatorBase<V,Aggregators.AdvancedMinMaxConsumer<V,T>>

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

Field Summary

Fields

Modifier and Type	Field and Description
private IAttribute<V>	attribute
private IAttribute<T>	comparator
private boolean	max

Constructor Summary

Constructors

Constructor and Description
AdvancedMinMaxAggregator(java.lang.String name, java.lang.String description, IAttribute<V> attribute, IAttribute<T> comparator, boolean max)

Method Summary

Modifier and Type	Method and Description
protected IMemberAccessor<? extends V,IItem>	doGetAccessor(IType<IItem> type)
V	getValue(Aggregators.AdvancedMinMaxConsumer<V,T> consumer)
Aggregators.AdvancedMinMaxConsumer<V,T>	newItemConsumer(IType<IItem> type)

Methods inherited from class org.openjdk.jmc.common.item.Aggregators.FieldAggregatorBase

acceptType, getAccessor

Methods inherited from class org.openjdk.jmc.common.item.Aggregators.MergingAggregator

getValue

Methods inherited from class org.openjdk.jmc.common.item.Aggregators.AggregatorBase

getDescription, getName, getValueType

Methods inherited from class java.lang.Object

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

Field Detail

max

private final boolean max

attribute

private final IAttribute<V> attribute

comparator

private final IAttribute<T extends java.lang.Comparable<T>> comparator

Constructor Detail

AdvancedMinMaxAggregator

public AdvancedMinMaxAggregator(java.lang.String name,
                                java.lang.String description,
                                IAttribute<V> attribute,
                                IAttribute<T> comparator,
                                boolean max)

Method Detail

newItemConsumer

public Aggregators.AdvancedMinMaxConsumer<V,T> newItemConsumer(IType<IItem> type)

Parameters:

type - an item type to get an item consumer for

Returns:

a new item consumer for the supplied type

getValue

public V getValue(Aggregators.AdvancedMinMaxConsumer<V,T> consumer)

Specified by:

getValue in class Aggregators.MergingAggregator<V,Aggregators.AdvancedMinMaxConsumer<V,T extends java.lang.Comparable<T>>>

doGetAccessor

protected IMemberAccessor<? extends V,IItem> doGetAccessor(IType<IItem> type)

Specified by:

doGetAccessor in class Aggregators.FieldAggregatorBase<V,Aggregators.AdvancedMinMaxConsumer<V,T extends java.lang.Comparable<T>>>