Package org.eclipse.collections.impl.block.procedure

Class MutatingAggregationProcedure<T,K,V>

java.lang.Object

org.eclipse.collections.impl.block.procedure.MutatingAggregationProcedure<T,K,V>

All Implemented Interfaces:

Serializable, Consumer<T>, Procedure<T>

public final class MutatingAggregationProcedure<T,K,V>
extends Object
implements Procedure<T>

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.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
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	Description
void	value(T each)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Consumer

andThen

Methods inherited from interface org.eclipse.collections.api.block.procedure.Procedure

accept

Constructor Details

MutatingAggregationProcedure

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

Method Details

value

public void value(T each)

Specified by:

value in interface Procedure<T>