Package org.jclouds.chef.util

Class CollectionUtils

java.lang.Object
org.jclouds.chef.util.CollectionUtils
public class CollectionUtils extends Object
Utility methods to work with collections.

  • Constructor Summary

    Constructors
    Constructor
    Description
    CollectionUtils()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static <T> com.google.common.collect.ImmutableList<T>
    copyOfOrEmpty(List<T> input)
    Creates an immutable list with the elements of the given list.
    static <K, V> com.google.common.collect.ImmutableMap<K,V>
    copyOfOrEmpty(Map<K,V> input)
    Creates an immutable map with the elements of the given map.
    static <T> com.google.common.collect.ImmutableSet<T>
    copyOfOrEmpty(Set<T> input)
    Creates an immutable set with the elements of the given set.

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • CollectionUtils

      public CollectionUtils()

  • Method Details

    • copyOfOrEmpty

      public static <T> com.google.common.collect.ImmutableList<T> copyOfOrEmpty(@Nullable List<T> input)
      Creates an immutable list with the elements of the given list. If the input list is null, it returns an empty list.
      Parameters:
      input - The list used to build the immutable one.
      Returns:
      An immutable list with the elements of the given list.

    • copyOfOrEmpty

      public static <T> com.google.common.collect.ImmutableSet<T> copyOfOrEmpty(@Nullable Set<T> input)
      Creates an immutable set with the elements of the given set. If the input set is null, it returns an empty set.
      Parameters:
      input - The set used to build the immutable one.
      Returns:
      An immutable set with the elements of the given set.

    • copyOfOrEmpty

      public static <K, V> com.google.common.collect.ImmutableMap<K,V> copyOfOrEmpty(@Nullable Map<K,V> input)
      Creates an immutable map with the elements of the given map. If the input map is null, it returns an empty map.
      Parameters:
      input - The map used to build the immutable one.
      Returns:
      An immutable map with the elements of the given map.