org.kuali.rice.core.util
Class CollectionUtils

java.lang.Object
  org.kuali.rice.core.util.CollectionUtils

public final class CollectionUtils
extends Object

Yet another utility class to help work with Collections. This class contains helper methods not found in any of the Collection utilities rice currently uses.

Author:

Kuali Rice Team (rice.collab@kuali.org)

Method Summary

static boolean	collectionsEquivalent(Collection<?> a, Collection<?> b) Performs a "brute force" comparison of collections by testing whether the collections contain each other.
static <T> Iterable<T>	toIterable(Enumeration<T> e) Creates an Iterable view of a Enumeration.
static <T> Iterable<T>	toIterable(Iterator<T> i) Creates an Iterable view of a Iterator.

Methods inherited from class java.lang.Object

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

Method Detail

collectionsEquivalent

public static boolean collectionsEquivalent(Collection<?> a,
                                            Collection<?> b)

Performs a "brute force" comparison of collections by testing whether the collections contain each other. This circumvents any particular uniqueness or ordering constraints on the collections (for instance, lists that are unordered but contain the same elements, where a hashset would not suffice for comparison purposes because it enforces element uniqueness)

toIterable

public static <T> Iterable<T> toIterable(Iterator<T> i)

Creates an Iterable view of a Iterator. This allows Iterators to be used in a foreach loop.

 Iterator<String> i ...
 
   for(String s : CollectionUtils.toIterable(i)) [
     System.out.println("i love for each " + s);	
   
 }
 

Type Parameters:

T - the type of the Iterable

Parameters:

i - the iterator to wrap

Returns:

the iterable

toIterable

public static <T> Iterable<T> toIterable(Enumeration<T> e)

Creates an Iterable view of a Enumeration. This allows Enumerations to be used in a foreach loop.

 Enumeration<String> e ...
 
   for(String s : CollectionUtils.toIterable(e)) [
     System.out.println("i love for each " + s);	
   
 }
 

Type Parameters:

T - the type of the Iterable

Parameters:

e - the enumeration to wrap

Returns:

the iterable