Package org.forgerock.openig.tools

Class Utils

java.lang.Object

org.forgerock.openig.tools.Utils

public final class Utils
extends Object

Utility class.

Method Summary

Modifier and Type	Method	Description
static <T> List<T>	immutable(List<T> list, Supplier<List<T>> listSupplier)	Returns an immutable List.
static <K, V> Map<K,V>	immutableMap(Map<K,V> map, Supplier<Map<K,V>> supplier)	Creates an immutable Map.
static List<Throwable>	throwableCauses(Throwable throwable)	Get the Throwable's causes as a list from a Throwable.

Methods inherited from class java.lang.Object

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

Method Details

immutable

public static <T> List<T> immutable(List<T> list,
 Supplier<List<T>> listSupplier)

Returns an immutable List.

Type Parameters:

T - The type of elements of this list.

Parameters:

list - The original list to copy.

listSupplier - A function which returns a new empty List into which the results will be inserted.

Returns:

An immutable list of strings.

immutableMap

public static <K,
V> Map<K,V> immutableMap(Map<K,V> map,
 Supplier<Map<K,V>> supplier)

Creates an immutable Map.

Note: This method uses a reference for the value. If the map value is not a primitive type, such as a list of strings, you may consider using immutable method before creating your immutableMap

.

Type Parameters:

K - Key type of the Map.

V - Value type of the Map.

Parameters:

map - The original map to copy.

supplier - A function which returns a new empty Map into which the results will be inserted.

Returns:

An immutable Map.

throwableCauses

public static List<Throwable> throwableCauses(Throwable throwable)

Get the Throwable's causes as a list from a Throwable.

Parameters:

throwable - The Throwable to extract the causes from, not null.

Returns:

an unmodifiable list containing the cause chain starting with Throwable.