de.mindcrimeilab.util
Class CollectionsHelper

java.lang.Object
  de.mindcrimeilab.util.CollectionsHelper

public class CollectionsHelper
extends Object

Version:

$Revision:62 $

Author:

Michael Engelhardt, $Author:me $

Constructor Summary

CollectionsHelper()

Method Summary

static <TIN,TOUT> void	copyCollection(Collection<TIN> source, Collection<TOUT> dest, Converter<TIN,TOUT> converter) Copies all items from the source collection to given collection using specified converter class.
static <T> void	filterCollection(Collection<T> collection, Filter<? super T> filter) Removes all elements from the collection for which the given Filter returns true.
static <T> void	reduceCollection(Collection<T> collection) Removes all duplicate items from given collection

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionsHelper

public CollectionsHelper()

Method Detail

filterCollection

public static <T> void filterCollection(Collection<T> collection,
                                        Filter<? super T> filter)

Removes all elements from the collection for which the given Filter returns true.

Type Parameters:

T - type specification of collection contents

Parameters:

collection - collection to be filtered

filter - instance of filter which will be evaluated for each element in the collection

reduceCollection

public static <T> void reduceCollection(Collection<T> collection)

Removes all duplicate items from given collection

Type Parameters:

T - type of items in collection

Parameters:

collection -

copyCollection

public static <TIN,TOUT> void copyCollection(Collection<TIN> source,
                                             Collection<TOUT> dest,
                                             Converter<TIN,TOUT> converter)

Copies all items from the source collection to given collection using specified converter class.

Type Parameters:

TIN - type of items in source collection

TOUT - type of items in destination collection

Parameters:

source - source collection

dest - destination collection

converter - function to convert one object into the other one