org.jbpm.util
Class CollectionUtil

java.lang.Object
  org.jbpm.util.CollectionUtil

public class CollectionUtil
extends java.lang.Object

Author:

Alejandro Guizar

Method Summary

static <E> java.util.Collection<E>	checkCollection(java.util.Collection<?> collection, java.lang.Class<E> type) Ensures that all elements of the given collection can be cast to a desired type.
static <E> java.util.List<E>	checkList(java.util.List<?> list, java.lang.Class<E> type) Ensures that all elements of the given list can be cast to a desired type.
static <K,V> java.util.Map<K,V>	checkMap(java.util.Map<?,?> map, java.lang.Class<K> keyType, java.lang.Class<V> valueType)
static <E> java.util.Set<E>	checkSet(java.util.Set<?> set, java.lang.Class<E> type) Ensures that all elements of the given set can be cast to a desired type.

Methods inherited from class java.lang.Object

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

Method Detail

checkCollection

public static <E> java.util.Collection<E> checkCollection(java.util.Collection<?> collection,
                                                          java.lang.Class<E> type)

Ensures that all elements of the given collection can be cast to a desired type.

Parameters:

collection - the collection to check

type - the desired type

Returns:

a collection of the desired type

Throws:

java.lang.ClassCastException - if an element cannot be cast to the desired type

checkList

public static <E> java.util.List<E> checkList(java.util.List<?> list,
                                              java.lang.Class<E> type)

Ensures that all elements of the given list can be cast to a desired type.

Parameters:

list - the list to check

type - the desired type

Returns:

a list of the desired type

Throws:

java.lang.ClassCastException - if an element cannot be cast to the desired type

checkSet

public static <E> java.util.Set<E> checkSet(java.util.Set<?> set,
                                            java.lang.Class<E> type)

Ensures that all elements of the given set can be cast to a desired type.

Parameters:

list - the set to check

type - the desired type

Returns:

a set of the desired type

Throws:

java.lang.ClassCastException - if an element cannot be cast to the desired type

checkMap

public static <K,V> java.util.Map<K,V> checkMap(java.util.Map<?,?> map,
                                                java.lang.Class<K> keyType,
                                                java.lang.Class<V> valueType)