Package com.gigaspaces.internal.utils

Class CollectionUtils

java.lang.Object

com.gigaspaces.internal.utils.CollectionUtils

public abstract class CollectionUtils
extends Object

Miscellaneous collection utility methods. Mainly for internal use within the framework.

Author:

kimchy

Constructor Summary

Constructors

Constructor	Description
CollectionUtils()

Method Summary

Modifier and Type	Method	Description
static <T> Collection<T>	cloneCollection(Collection<T> collection)
static <T> List<T>	cloneList(List<T> list)
static <K, V> Map<K,V>	cloneMap(Map<K,V> map)
static <T> boolean	equals(Collection<T> c1, Collection<T> c2)
static <T> T	first(Collection<T> collection)
static boolean	isEmpty(Collection<?> collection)	Return true if the supplied Collection is null or empty.
static <T> List<T>	toList(T... items)	Converts the supplied array into a List.
static <T> Set<T>	toSet(T... items)	Converts the supplied array into a Set.
static <T> java.util.stream.Stream<T>	toStream(Collection<T> collection)
static <T> List<T>	toUnmodifiableList(T... items)
static <T> Set<T>	toUnmodifiableSet(T... items)

Methods inherited from class java.lang.Object

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

Constructor Details

CollectionUtils

public CollectionUtils()

Method Details

isEmpty

public static boolean isEmpty(Collection<?> collection)

Return true if the supplied Collection is null or empty. Otherwise, return false.

Parameters:

collection - the Collection to check

toStream

public static <T> java.util.stream.Stream<T> toStream(Collection<T> collection)

toList

public static <T> List<T> toList(T... items)

Converts the supplied array into a List.

Parameters:

source - the original array

Returns:

the converted List result

toUnmodifiableList

public static <T> List<T> toUnmodifiableList(T... items)

toSet

public static <T> Set<T> toSet(T... items)

Converts the supplied array into a Set.

Parameters:

source - the original array

Returns:

the converted List result

toUnmodifiableSet

public static <T> Set<T> toUnmodifiableSet(T... items)

equals

public static <T> boolean equals(Collection<T> c1,
 Collection<T> c2)

cloneList

public static <T> List<T> cloneList(List<T> list)

cloneCollection

public static <T> Collection<T> cloneCollection(Collection<T> collection)

cloneMap

public static <K,
V> Map<K,V> cloneMap(Map<K,V> map)

first

public static <T> T first(Collection<T> collection)