Package com.atlassian.bamboo.util

Class BambooCollectionUtils

java.lang.Object
com.atlassian.bamboo.util.BambooCollectionUtils
public class BambooCollectionUtils extends Object

  • Method Details

    • stringToCollection

      @NotNull public static @NotNull List<String> stringToCollection(String s)
      Converts a string with a given pattern into a Collection of strings.
      Parameters:
      s - string to be analyzed
      Returns:
      list of strings

    • stringArrayToList

      @NotNull public static @NotNull List<String> stringArrayToList(@Nullable @Nullable String[] s)

    • stringArrayToHashSet

      @NotNull public static @NotNull Set<String> stringArrayToHashSet(@Nullable @Nullable String[] values)

    • removeDuplicates

      @Nullable public static <T> @Nullable List<T> removeDuplicates(@Nullable @Nullable List<T> input)

    • removeDuplicatesAndSort

      @Nullable public static <T extends Comparable<? super T>> @Nullable List<T> removeDuplicatesAndSort(List<T> input)

    • removeDuplicatesAndSort

      @Nullable public static <T> @Nullable List<T> removeDuplicatesAndSort(List<T> input, @NotNull @NotNull Comparator<? super T> c)

    • convertToList

      @Nullable public static @Nullable List<String> convertToList(@Nullable @Nullable String s)

    • subtract

      @NotNull public static <T> @NotNull List<T> subtract(@NotNull @NotNull Collection<T> a, @NotNull @NotNull Collection<T> b)
      Generic version of ListUtils.subtract
      Type Parameters:
      T - any type
      Parameters:
      a - collection A
      b - collection B
      Returns:
      List of (A - B)

    • sortByValue

      public static <K, V extends Comparable<? super V>> List<Map.Entry<K,V>> sortByValue(Map<K,V> map)
      Given a map returns the list of entries in the map sorted by Entry.getValue() in descending order.
      Parameters:
      map -
      Returns:
      sorted list of map's entries

    • addIgnoreNull

      public static <E> boolean addIgnoreNull(@NotNull @NotNull Collection<? super E> collection, @Nullable E element)
      Add element to the collection if it is not null. Generified version of Apache's CollectionUtils.addIgnoreNull.
      Type Parameters:
      E - Element type
      Parameters:
      collection - Collection where element will be added to
      element - Element to be added to the collection
      Returns:
      true if the collection changed

    • get

      @Nullable public static <E> E get(@NotNull @NotNull List<? extends E> list, int index)
      Get Nth element from list or null if list hasn't got so many elements
      Type Parameters:
      E - Type of the elements in the list
      Parameters:
      list - List to get element from
      index - Index of element to get
      Returns:
      Element of given index or null

    • nullToEmptyImmutable

      @NotNull public static <T> @NotNull List<T> nullToEmptyImmutable(@Nullable @Nullable List<T> list)

    • nullToEmptyImmutable

      @NotNull public static <T> @NotNull Set<T> nullToEmptyImmutable(@Nullable @Nullable Set<T> set)

    • nullToEmptyImmutable

      @NotNull public static <K, V> @NotNull Map<K,V> nullToEmptyImmutable(@Nullable @Nullable Map<K,V> map)

    • contains

      public static <T> boolean contains(@Nullable @Nullable Collection<T> collection, Object object)
      Returns:
      true if collection is not null and contains object

    • newImmutableList

      @NotNull public static <T> @NotNull com.google.common.collect.ImmutableList<T> newImmutableList(@Nullable @Nullable Collection<T> collection)

    • newImmutableSet

      @NotNull public static <T> @NotNull com.google.common.collect.ImmutableSet<T> newImmutableSet(@Nullable @Nullable Iterable<T> set)
      Creates a new immutable set from the supplied set. Returns empty set for null.

    • newHashSet

      public static <T> HashSet<T> newHashSet(Collection<T> collection)

    • getLastElements

      @NotNull public static <T> @NotNull Collection<T> getLastElements(@NotNull @NotNull Collection<T> collection, int numberOfElements)
      Returns the last N elements of a collection.
      Parameters:
      collection - collection of any elements
      numberOfElements - number of last elements to return - must not be a negative number, must be no greater than the size of provided collection
      Returns:
      last N elements from the collection