net.emaze.dysfunctional.groups

Class IndexBy<M extends Map<K,V>,K,V>

java.lang.Object

net.emaze.dysfunctional.groups.IndexBy<M,K,V>

Type Parameters:

M - the output Map type parameter

K - the key type parameter

V - the value type parameter

All Implemented Interfaces:

Delegate<M,Iterator<V>>

public class IndexBy<M extends Map<K,V>,K,V>
extends Object
implements Delegate<M,Iterator<V>>

A unary delegate indexing elements from an iterator. Indexing key is provided by the passed delegate.

Author:

rferranti

Constructor Summary

Constructors

Constructor and Description
IndexBy(Delegate<K,V> grouper, Provider<M> mapProvider)

Method Summary

Methods

Modifier and Type	Method and Description
M	perform(Iterator<V> groupies)

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexBy

public IndexBy(Delegate<K,V> grouper,
       Provider<M> mapProvider)

Method Detail

perform

public M perform(Iterator<V> groupies)

Specified by:

perform in interface Delegate<M extends Map<K,V>,Iterator<V>>