Package com.tangosol.util

Class SegmentedHashMap.KeySet

java.lang.Object
java.util.AbstractCollection
java.util.AbstractSet
com.tangosol.util.SegmentedHashMap.KeySet
All Implemented Interfaces:
Iterable, Collection, Set
Enclosing class:
SegmentedHashMap
protected class SegmentedHashMap.KeySet extends AbstractSet
A set of entries backed by this map.

  • Constructor Details

    • KeySet

      protected KeySet()

  • Method Details

    • iterator

      public Iterator iterator()
      Obtain an iterator over the keys in the Map.
      Specified by:
      iterator in interface Collection
      Specified by:
      iterator in interface Iterable
      Specified by:
      iterator in interface Set
      Specified by:
      iterator in class AbstractCollection
      Returns:
      an Iterator that provides a live view of the keys in the underlying Map object

    • size

      public int size()
      Determine the number of keys in the Set.
      Specified by:
      size in interface Collection
      Specified by:
      size in interface Set
      Specified by:
      size in class AbstractCollection
      Returns:
      the number of keys in the Set, which is the same as the number of entries in the underlying Map

    • contains

      public boolean contains(Object oKey)
      Determine if a particular key is present in the Set.
      Specified by:
      contains in interface Collection
      Specified by:
      contains in interface Set
      Overrides:
      contains in class AbstractCollection
      Returns:
      true iff the passed key object is in the key Set

    • remove

      public boolean remove(Object o)
      Removes the specified element from this Set of keys if it is present by removing the associated entry from the underlying Map.
      Specified by:
      remove in interface Collection
      Specified by:
      remove in interface Set
      Overrides:
      remove in class AbstractCollection
      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 of Keys by clearing the underlying Map.
      Specified by:
      clear in interface Collection
      Specified by:
      clear in interface Set
      Overrides:
      clear in class AbstractCollection

    • toArray

      public Object[] toArray()
      Returns an array containing all of the keys in this set.
      Specified by:
      toArray in interface Collection
      Specified by:
      toArray in interface Set
      Overrides:
      toArray in class AbstractCollection
      Returns:
      an array containing all of the keys in this set

    • toArray

      public Object[] toArray(Object[] a)
      Returns an array with a runtime type is that of the specified array and that contains all of the keys in this Set. If the Set fits in the specified array, it is returned therein. Otherwise, a new array is allocated with the runtime type of the specified array and the size of this collection.

      If the Set fits in the specified array with room to spare (i.e., the array has more elements than the Set), the element in the array immediately following the end of the Set is set to null. This is useful in determining the length of the Set only if the caller knows that the Set does not contain any null keys.)

      Specified by:
      toArray in interface Collection
      Specified by:
      toArray in interface Set
      Overrides:
      toArray in class AbstractCollection
      Parameters:
      a - the array into which the elements of the Set are to be stored, if it is big enough; otherwise, a new array of the same runtime type is allocated for this purpose
      Returns:
      an array containing the elements of the Set
      Throws:
      ArrayStoreException - if the runtime type of the specified array is not a supertype of the runtime type of every element in this Set of keys