Top Description Fields Constructors Methods

org.eclipse.collections.impl.block.procedure

public final Class MutatingAggregationProcedure<T, K, V>

Class Inheritance

extends Object
implements Procedure<T>

java.lang.Object
org.eclipse.collections.impl.block.procedure.MutatingAggregationProcedure

All Implemented Interfaces

org.eclipse.collections.api.block.procedure.Procedure, java.io.Serializable, java.util.function.Consumer

Imports

org.eclipse.collections.api.block.function.Function, .Function0, org.eclipse.collections.api.block.procedure.Procedure, .Procedure2, org.eclipse.collections.api.map.MutableMapIterable

This procedure is used to apply an aggregate function like sum on a grouped set of data. The values in the grouping must be mutable using this procedure. An example would be using an AtomicInteger which can be mutated vs. an Integer which cannot.

Field Summary

Modifier and Type	Field and Description
private final Function<? super T, ? extends K>	groupBy
private final MutableMapIterable<K, V>	map
private final Procedure2<? super V, ? super T>	mutatingAggregator
private static final long	serialVersionUID
private final Function0<? extends V>	zeroValueFactory

Constructor Summary

Access	Constructor and Description
public	MutatingAggregationProcedure(MutableMapIterable<K, V> map, Function<? super T, ? extends K> groupBy, Function0<? extends V> zeroValueFactory, Procedure2<? super V, ? super T> mutatingAggregator)

Method Summary

Modifier and Type	Method and Description
public void	value(T each) Implements org.eclipse.collections.api.block.procedure.Procedure.value.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

groupBy	back to summary
private final Function<? super T, ? extends K> groupBy

map	back to summary
private final MutableMapIterable<K, V> map

mutatingAggregator	back to summary
private final Procedure2<? super V, ? super T> mutatingAggregator

serialVersionUID	back to summary
private static final long serialVersionUID

zeroValueFactory	back to summary
private final Function0<? extends V> zeroValueFactory

Constructor Detail

MutatingAggregationProcedure	back to summary
public MutatingAggregationProcedure(MutableMapIterable<K, V> map, Function<? super T, ? extends K> groupBy, Function0<? extends V> zeroValueFactory, Procedure2<? super V, ? super T> mutatingAggregator)

Method Detail

value

back to summary

public void value(T each)

Implements org.eclipse.collections.api.block.procedure.Procedure.value.

Annotations

@Override