Module org.hsqldb
Package org.hsqldb.lib

Class OrderedHashSet<E>

  • All Implemented Interfaces:
    Collection<E>, List<E>, Set<E>
    public class OrderedHashSet<E>
extends HashSet<E>
implements List<E>, Set<E>
    A list which is also a Set which maintains the inserted order of elements and allows access by index. Iterators return the elements in the index order.

    This class does not store null elements.

    Since:
    1.9.0
    Author:
    Fred Toussi (fredt@users dot sourceforge.net)

    • Constructor Detail

      • OrderedHashSet

        public OrderedHashSet()

      • OrderedHashSet

        public OrderedHashSet​(int initialCapacity)

      • OrderedHashSet

        public OrderedHashSet​(int initialCapacity,
                      ObjectComparator<E> comparator)

      • OrderedHashSet

        public OrderedHashSet​(E[] valueList)

    • Method Detail

      • remove

        public boolean remove​(E key)
        Description copied from class: HashSet
        returns true if removed
        Specified by:
        remove in interface Collection<E>
        Overrides:
        remove in class HashSet<E>
        Parameters:
        key - Object to remove
        Returns:
        true if removed

      • remove

        public E remove​(int index)
        Specified by:
        remove in interface List<E>

      • insert

        public boolean insert​(int index,
                      E key)
               throws java.lang.IndexOutOfBoundsException
        Throws:
        java.lang.IndexOutOfBoundsException

      • set

        public E set​(int index,
             E key)
        Specified by:
        set in interface List<E>

      • add

        public void add​(int index,
                E key)
        Specified by:
        add in interface List<E>

      • get

        public E get​(int index)
        Specified by:
        get in interface List<E>

      • toArray

        public java.lang.Object[] toArray()
        Overrides:
        toArray in class HashSet<E>

      • toArray

        public <T> T[] toArray​(T[] array)
        Overrides:
        toArray in class HashSet<E>

      • indexOf

        public int indexOf​(java.lang.Object key)

      • getIndex

        public int getIndex​(java.lang.Object key)

      • lastIndexOf

        public int lastIndexOf​(java.lang.Object o)

      • getLargestIndex

        public int getLargestIndex​(OrderedHashSet<E> other)

      • getSmallestIndex

        public int getSmallestIndex​(OrderedHashSet<E> other)

      • addAll

        public static <E> OrderedHashSet<E> addAll​(OrderedHashSet<E> first,
                                           OrderedHashSet<E> second)
        add all elements of second to first. if second is null return first (which can be null), else if first is null return a new set and add the elements of second

      • add

        public static <E> OrderedHashSet<E> add​(OrderedHashSet<E> first,
                                        E value)
        add value to first. if value is null return first (which can be null), else if first is null return a new set and add the value