Package org.jboss.util.collection

Class MapDelegateSet<E>

  • Type Parameters:
    E - the element type
    All Implemented Interfaces:
    java.io.Serializable, java.lang.Iterable<E>, java.util.Collection<E>, java.util.Set<E>
    Direct Known Subclasses:
    ConcurrentReferenceHashSet, ConcurrentSet, FastCopyHashSet
    public class MapDelegateSet<E>
extends java.util.AbstractSet<E>
implements java.io.Serializable
    Set implemented by a backing Map. It's serializable if the elements are serializable.
    See Also:
    Serialized Form

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private java.util.Map<E,​java.lang.Object> map
      The delegate map
      private static java.lang.Object PRESENT
      The dummy object
      private static long serialVersionUID
      The serialVersionUID

    • Constructor Summary

      Constructors 
      Constructor Description
      MapDelegateSet​(java.util.Map<E,​java.lang.Object> map)
      Set the initial map.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean add​(E o)
      Adds the specified element to this set if it is not already present.
      void clear()
      Removes all of the elements from this set.
      boolean contains​(java.lang.Object o)
      Returns true if this set contains the specified element.
      boolean isEmpty()
      Returns true if this set contains no elements.
      java.util.Iterator<E> iterator()
      Returns an iterator over the elements in this set.
      boolean remove​(java.lang.Object o)
      Removes the specified element from this set if it is present.
      int size()
      Returns the number of elements in this set (its cardinality).
      java.lang.String toString()  

      • Methods inherited from class java.util.AbstractSet

        equals, hashCode, removeAll

      • Methods inherited from class java.util.AbstractCollection

        addAll, containsAll, retainAll, toArray, toArray

      • Methods inherited from class java.lang.Object

        clone, finalize, getClass, notify, notifyAll, wait, wait, wait

      • Methods inherited from interface java.util.Collection

        parallelStream, removeIf, stream, toArray

      • Methods inherited from interface java.lang.Iterable

        forEach

      • Methods inherited from interface java.util.Set

        addAll, containsAll, retainAll, spliterator, toArray, toArray

    • Field Detail

      • serialVersionUID

        private static final long serialVersionUID
        The serialVersionUID
        See Also:
        Constant Field Values

      • map

        private final java.util.Map<E,​java.lang.Object> map
        The delegate map

      • PRESENT

        private static final java.lang.Object PRESENT
        The dummy object

    • Constructor Detail

      • MapDelegateSet

        public MapDelegateSet​(java.util.Map<E,​java.lang.Object> map)
        Set the initial map.
        Parameters:
        map - the initial map

    • Method Detail

      • iterator

        public java.util.Iterator<E> iterator()
        Returns an iterator over the elements in this set. The elements are returned in no particular order.
        Specified by:
        iterator in interface java.util.Collection<E>
        Specified by:
        iterator in interface java.lang.Iterable<E>
        Specified by:
        iterator in interface java.util.Set<E>
        Specified by:
        iterator in class java.util.AbstractCollection<E>
        Returns:
        an Iterator over the elements in this set.
        See Also:
        ConcurrentModificationException

      • size

        public int size()
        Returns the number of elements in this set (its cardinality).
        Specified by:
        size in interface java.util.Collection<E>
        Specified by:
        size in interface java.util.Set<E>
        Specified by:
        size in class java.util.AbstractCollection<E>
        Returns:
        the number of elements in this set (its cardinality).

      • isEmpty

        public boolean isEmpty()
        Returns true if this set contains no elements.
        Specified by:
        isEmpty in interface java.util.Collection<E>
        Specified by:
        isEmpty in interface java.util.Set<E>
        Overrides:
        isEmpty in class java.util.AbstractCollection<E>
        Returns:
        true if this set contains no elements.

      • contains

        public boolean contains​(java.lang.Object o)
        Returns true if this set contains the specified element.
        Specified by:
        contains in interface java.util.Collection<E>
        Specified by:
        contains in interface java.util.Set<E>
        Overrides:
        contains in class java.util.AbstractCollection<E>
        Parameters:
        o - element whose presence in this set is to be tested.
        Returns:
        true if this set contains the specified element.

      • add

        public boolean add​(E o)
        Adds the specified element to this set if it is not already present.
        Specified by:
        add in interface java.util.Collection<E>
        Specified by:
        add in interface java.util.Set<E>
        Overrides:
        add in class java.util.AbstractCollection<E>
        Parameters:
        o - element to be added to this set.
        Returns:
        true if the set did not already contain the specified element.

      • remove

        public boolean remove​(java.lang.Object o)
        Removes the specified element from this set if it is present.
        Specified by:
        remove in interface java.util.Collection<E>
        Specified by:
        remove in interface java.util.Set<E>
        Overrides:
        remove in class java.util.AbstractCollection<E>
        Parameters:
        o - object to be removed from this set, if present.
        Returns:
        true if the set contained the specified element.

      • clear

        public void clear()
        Removes all of the elements from this set.
        Specified by:
        clear in interface java.util.Collection<E>
        Specified by:
        clear in interface java.util.Set<E>
        Overrides:
        clear in class java.util.AbstractCollection<E>

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.util.AbstractCollection<E>