at.molindo.utils.collections

Class CollectionUtils

java.lang.Object

at.molindo.utils.collections.CollectionUtils

public class CollectionUtils
extends Object

Method Summary

Modifier and Type	Method and Description
static <C extends Collection<T>,T,F> C	add(C to, F o, Function<? super F,T> f)
static <C extends Collection<T>,T,F> C	addAll(C to, Collection<? extends F> from, Function<? super F,T> f)
static boolean	empty(Collection<?> c)
static boolean	empty(Map<?,?> c)
static <T,V> T	find(Collection<T> c, Function<T,Boolean> f)
static <T,V> T	find(Collection<T> c, Function<T,V> f, V match)
static <T,V> List<T>	findAll(Collection<T> c, Function<T,Boolean> f)
static <T,V> List<T>	findAll(Collection<T> c, Function<T,V> f, V match)
static <T> T	first(Iterable<T> c)
static <K,V> Map.Entry<K,V>	first(Map<K,V> c)
static <K> K	firstKey(Map<K,?> c)
static <V> V	firstValue(Map<?,V> c)
static <E> ArrayList<E>	list(E... e)
static <E> ArrayList<E>	list(Iterable<E> e)
static <K,V> HashMap<K,V>	mapKeys(Iterable<K> e, Function<K,V> f)
static <K,V> HashMap<K,V>	mapValues(Iterable<V> e, Function<V,K> f)
static <M extends Map<T,F>,T,F> M	put(M to, F o, Function<? super F,T> f)
static <M extends Map<T,F>,T,F> M	putAll(M to, Collection<? extends F> from, Function<? super F,T> f)
static <K,V> V	putIfAbsent(ConcurrentMap<K,V> map, K key, V value)
static <T> void	remove(Iterable<T> collection, Function<T,Boolean> function)
static <T> List<T>	resize(List<T> list, int size)
static <T> List<T>	resize(List<T> list, int size, T defaultValue)
static <T> List<T>	resize(List<T> list, int size, T defaultValue, Collection<T> obsolete)
static <E> HashSet<E>	set(E... e)
static <E> HashSet<E>	set(Iterable<E> e)
static <T> List<T>	set(List<T> list, int idx, T obj) set index of list to obj, resizing list if necessary
static <T> List<T>	set(List<T> list, int idx, T obj, T defaultValue)
static <E> TreeSet<E>	sortedSet(E... e)
static <E> TreeSet<E>	sortedSet(Iterable<E> e)
static <T> List<T>	subList(List<T> list, int first, int count) a sublist implementation that is diffrent from List.subList(int, int) as it handles out of bounds indexes gracefully
static <E,T> ArrayList<E>	transformList(Iterable<T> e, Function<T,E> f)
static <E,T> HashSet<E>	transformSet(Iterable<T> e, Function<T,E> f)
static <E,T> TreeSet<E>	transformSortedSet(Iterable<T> e, Function<T,E> f)
static <E,T> List<E>	transformUnmodifiableList(Iterable<T> e, Function<T,E> f)
static <E,T> Set<E>	transformUnmodifiableSet(Iterable<T> e, Function<T,E> f)
static <E,T> SortedSet<E>	transformUnmodifiableSortedSet(Iterable<T> e, Function<T,E> f)
static <E> List<E>	unmodifiableList(E... e)
static <E> List<E>	unmodifiableList(Iterable<E> e)
static <E> Set<E>	unmodifiableSet(E... e)
static <E> Set<E>	unmodifiableSet(Iterable<E> e)
static <E> SortedSet<E>	unmodifiableSortedSet(E... e)
static <E> SortedSet<E>	unmodifiableSortedSet(Iterable<E> e)

Methods inherited from class java.lang.Object

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

Method Detail

unmodifiableSet

public static <E> Set<E> unmodifiableSet(Iterable<E> e)

unmodifiableSet

public static <E> Set<E> unmodifiableSet(E... e)

transformUnmodifiableSet

public static <E,T> Set<E> transformUnmodifiableSet(Iterable<T> e,
                                                    Function<T,E> f)

set

public static <E> HashSet<E> set(E... e)

set

public static <E> HashSet<E> set(Iterable<E> e)

transformSet

public static <E,T> HashSet<E> transformSet(Iterable<T> e,
                                            Function<T,E> f)

unmodifiableSortedSet

public static <E> SortedSet<E> unmodifiableSortedSet(E... e)

unmodifiableSortedSet

public static <E> SortedSet<E> unmodifiableSortedSet(Iterable<E> e)

transformUnmodifiableSortedSet

public static <E,T> SortedSet<E> transformUnmodifiableSortedSet(Iterable<T> e,
                                                                Function<T,E> f)

sortedSet

public static <E> TreeSet<E> sortedSet(E... e)

sortedSet

public static <E> TreeSet<E> sortedSet(Iterable<E> e)

transformSortedSet

public static <E,T> TreeSet<E> transformSortedSet(Iterable<T> e,
                                                  Function<T,E> f)

unmodifiableList

public static <E> List<E> unmodifiableList(E... e)

unmodifiableList

public static <E> List<E> unmodifiableList(Iterable<E> e)

transformUnmodifiableList

public static <E,T> List<E> transformUnmodifiableList(Iterable<T> e,
                                                      Function<T,E> f)

list

public static <E> ArrayList<E> list(E... e)

list

public static <E> ArrayList<E> list(Iterable<E> e)

transformList

public static <E,T> ArrayList<E> transformList(Iterable<T> e,
                                               Function<T,E> f)

mapKeys

public static <K,V> HashMap<K,V> mapKeys(Iterable<K> e,
                                         Function<K,V> f)

mapValues

public static <K,V> HashMap<K,V> mapValues(Iterable<V> e,
                                           Function<V,K> f)

subList

public static <T> List<T> subList(List<T> list,
                                  int first,
                                  int count)

a sublist implementation that is diffrent from List.subList(int, int) as it handles out of bounds indexes gracefully

empty

public static boolean empty(Collection<?> c)

empty

public static boolean empty(Map<?,?> c)

first

public static <T> T first(Iterable<T> c)

first

public static <K,V> Map.Entry<K,V> first(Map<K,V> c)

firstKey

public static <K> K firstKey(Map<K,?> c)

firstValue

public static <V> V firstValue(Map<?,V> c)

putIfAbsent

public static <K,V> V putIfAbsent(ConcurrentMap<K,V> map,
                                  K key,
                                  V value)

find

public static <T,V> T find(Collection<T> c,
                           Function<T,Boolean> f)

findAll

public static <T,V> List<T> findAll(Collection<T> c,
                                    Function<T,Boolean> f)

find

public static <T,V> T find(Collection<T> c,
                           Function<T,V> f,
                           V match)

findAll

public static <T,V> List<T> findAll(Collection<T> c,
                                    Function<T,V> f,
                                    V match)

add

public static <C extends Collection<T>,T,F> C add(C to,
                                                  F o,
                                                  Function<? super F,T> f)

addAll

public static <C extends Collection<T>,T,F> C addAll(C to,
                                                     Collection<? extends F> from,
                                                     Function<? super F,T> f)

put

public static <M extends Map<T,F>,T,F> M put(M to,
                                             F o,
                                             Function<? super F,T> f)

putAll

public static <M extends Map<T,F>,T,F> M putAll(M to,
                                                Collection<? extends F> from,
                                                Function<? super F,T> f)

resize

public static <T> List<T> resize(List<T> list,
                                 int size)

resize

public static <T> List<T> resize(List<T> list,
                                 int size,
                                 T defaultValue)

resize

public static <T> List<T> resize(List<T> list,
                                 int size,
                                 T defaultValue,
                                 Collection<T> obsolete)

set

public static <T> List<T> set(List<T> list,
                              int idx,
                              T obj)

set index of list to obj, resizing list if necessary

Type Parameters:

T -

Parameters:

list -

idx -

obj -

Returns:

set

public static <T> List<T> set(List<T> list,
                              int idx,
                              T obj,
                              T defaultValue)

remove

public static <T> void remove(Iterable<T> collection,
                              Function<T,Boolean> function)