Class MutatingAggregationProcedure<T,K,V>
- java.lang.Object
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- org.eclipse.collections.impl.block.procedure.MutatingAggregationProcedure<T,K,V>
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- All Implemented Interfaces:
java.io.Serializable
,java.util.function.Consumer<T>
,Procedure<T>
public final class MutatingAggregationProcedure<T,K,V> extends java.lang.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
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Field Summary
Fields Modifier and Type Field Description private Function<? super T,? extends K>
groupBy
private MutableMapIterable<K,V>
map
private Procedure2<? super V,? super T>
mutatingAggregator
private static long
serialVersionUID
private Function0<? extends V>
zeroValueFactory
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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)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
value(T each)
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Field Detail
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serialVersionUID
private static final long serialVersionUID
- See Also:
- Constant Field Values
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map
private final MutableMapIterable<K,V> map
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mutatingAggregator
private final Procedure2<? super V,? super T> mutatingAggregator
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