Package com.tangosol.net.cache

Class OldCache.KeySet

java.lang.Object

java.util.AbstractCollection

java.util.AbstractSet

com.tangosol.util.SafeHashMap.KeySet

com.tangosol.net.cache.OldCache.KeySet

All Implemented Interfaces:

Serializable, Iterable, Collection, Set

Enclosing class:

OldCache

protected class OldCache.KeySet
extends SafeHashMap.KeySet

A set of entries backed by this map.

See Also:

• Serialized Form

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	KeySet()

Method Summary

Modifier and Type	Method	Description
int	size()	Determine the number of keys in the Set.
Object[]	toArray(Object[] ao)	Returns an array with a runtime type is that of the specified array and that contains all of the elements in this collection.

Methods inherited from class com.tangosol.util.SafeHashMap.KeySet

clear, contains, iterator, remove, removeAll, toArray

Methods inherited from class java.util.AbstractSet

equals, hashCode

Methods inherited from class java.util.AbstractCollection

add, addAll, containsAll, isEmpty, retainAll, toString

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

add, addAll, containsAll, isEmpty, retainAll, spliterator

Constructor Details

KeySet

protected KeySet()

Method Details

toArray

public Object[] toArray(Object[] ao)

Returns an array with a runtime type is that of the specified array and that contains all of the elements in this collection. If the collection 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 collection fits in the specified array with room to spare (i.e., the array has more elements than the collection), the element in the array immediately following the end of the collection is set to null. This is useful in determining the length of the collection only if the caller knows that the collection does not contain any null elements.)

Specified by:

toArray in interface Collection

Specified by:

toArray in interface Set

Overrides:

toArray in class SafeHashMap.KeySet

Parameters:

ao - the array into which the elements of the collection 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 collection

Throws:

ArrayStoreException - if the runtime type of the specified array is not a supertype of the runtime type of every element in this collection

size

public int size()

Determine the number of keys in the Set.

Specified by:

size in interface Collection

Specified by:

size in interface Set

Overrides:

size in class SafeHashMap.KeySet

Returns:

the number of keys in the Set, which is the same as the number of entries in the underlying Map