Package grails.util

Class CollectionUtils

java.lang.Object

grails.util.CollectionUtils

public final class CollectionUtils
extends Object

Collection utility methods.

Method Summary

Modifier and Type	Method	Description
static Map	getOrCreateChildMap(Map parent, String key)	Gets a child map of the given parent map or returns an empty map if it doesn't exist
static <T> List<T>	newList(T... values)
static <K, V> Map<K,V>	newMap(Object... keysAndValues)
static <T> Set<T>	newSet(T... values)

Methods inherited from class java.lang.Object

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

Method Details

newMap

public static <K,
V> Map<K,V> newMap(Object... keysAndValues)

newSet

public static <T> Set<T> newSet(T... values)

newList

public static <T> List<T> newList(T... values)

getOrCreateChildMap

public static Map getOrCreateChildMap(Map parent,
 String key)

Gets a child map of the given parent map or returns an empty map if it doesn't exist

Parameters:

parent - The parent map

key - The key that holds the child map

Returns:

The child map