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
A set of entries backed by this map.
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionvoid
clear()
Removes all of the elements from this set of Keys by clearing the underlying Map.boolean
Determine if a particular key is present in the Set.iterator()
Obtain an iterator over the keys in the Map.boolean
Removes the specified element from this Set of keys if it is present by removing the associated entry from the underlying Map.int
size()
Determine the number of keys in the Set.Object[]
toArray()
Returns an array containing all of the keys in this set.Object[]
Returns an array with a runtime type is that of the specified array and that contains all of the keys in this Set.Methods inherited from class java.util.AbstractSet
equals, hashCode, removeAll
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.util.Set
add, addAll, containsAll, isEmpty, retainAll, spliterator
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Constructor Details
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KeySet
protected KeySet()
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Method Details
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iterator
Obtain an iterator over the keys in the Map.- Specified by:
iterator
in interfaceCollection
- Specified by:
iterator
in interfaceIterable
- Specified by:
iterator
in interfaceSet
- Specified by:
iterator
in classAbstractCollection
- Returns:
- an Iterator that provides a live view of the keys in the underlying Map object
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size
public int size()Determine the number of keys in the Set.- Specified by:
size
in interfaceCollection
- Specified by:
size
in interfaceSet
- Specified by:
size
in classAbstractCollection
- Returns:
- the number of keys in the Set, which is the same as the number of entries in the underlying Map
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contains
Determine if a particular key is present in the Set.- Specified by:
contains
in interfaceCollection
- Specified by:
contains
in interfaceSet
- Overrides:
contains
in classAbstractCollection
- Returns:
- true iff the passed key object is in the key Set
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remove
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 interfaceCollection
- Specified by:
remove
in interfaceSet
- Overrides:
remove
in classAbstractCollection
- Parameters:
o
- object to be removed from this set, if present- Returns:
- true if the set contained the specified element
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clear
public void clear()Removes all of the elements from this set of Keys by clearing the underlying Map.- Specified by:
clear
in interfaceCollection
- Specified by:
clear
in interfaceSet
- Overrides:
clear
in classAbstractCollection
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toArray
Returns an array containing all of the keys in this set.- Specified by:
toArray
in interfaceCollection
- Specified by:
toArray
in interfaceSet
- Overrides:
toArray
in classAbstractCollection
- Returns:
- an array containing all of the keys in this set
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toArray
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 interfaceCollection
- Specified by:
toArray
in interfaceSet
- Overrides:
toArray
in classAbstractCollection
- 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
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