eu.dnetlib.miscutils.collections

Class EnsureCollection

java.lang.Object

eu.dnetlib.miscutils.collections.EnsureCollection

public class EnsureCollection
extends Object

Utility class which checks ensures that a given collection is not null.

CXF for example cannot distinguish from nulls. This helper allows you write:

 for(String bla : EnsureCollection.list(somecode())) {....}
 

Author:

marko

Constructor Summary

Constructors

Constructor and Description
EnsureCollection()

Method Summary

Modifier and Type	Method and Description
static <T> List<T>	list(List<T> aList) returns the argument or a new list if the argument is null.
static <T> List<T>	notNullList(List<T> aList) Alias for static imports.

Methods inherited from class java.lang.Object

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

Constructor Detail

EnsureCollection

public EnsureCollection()

Method Detail

list

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

returns the argument or a new list if the argument is null.

Type Parameters:

T - a type

Parameters:

aList - a list

Returns:

passthrough or empty list

notNullList

public static <T> List<T> notNullList(List<T> aList)

Alias for static imports.

Type Parameters:

T - a type

Parameters:

aList - a list

Returns:

passthrough or empty list