Package gnu.trove.impl.hash
Class TShortIntHash
java.lang.Object
gnu.trove.impl.hash.THash
gnu.trove.impl.hash.TPrimitiveHash
gnu.trove.impl.hash.TShortIntHash
- All Implemented Interfaces:
Externalizable
,Serializable
- Direct Known Subclasses:
TShortIntHashMap
An open addressed hashing implementation for short/int primitive entries.
Created: Sun Nov 4 08:56:06 2001
- See Also:
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Field Summary
FieldsModifier and TypeFieldDescriptionshort[]
the set of shortsprotected boolean
protected short
key that represents null NOTE: should not be modified after the Hash is created, but is not final because of Externalizationprotected int
value that represents null NOTE: should not be modified after the Hash is created, but is not final because of ExternalizationFields inherited from class gnu.trove.impl.hash.TPrimitiveHash
_states, FREE, FULL, REMOVED
Fields inherited from class gnu.trove.impl.hash.THash
_autoCompactionFactor, _autoCompactRemovesRemaining, _autoCompactTemporaryDisable, _free, _loadFactor, _maxSize, _size, DEFAULT_CAPACITY, DEFAULT_LOAD_FACTOR
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Constructor Summary
ConstructorsConstructorDescriptionCreates a newT#E#Hash
instance with the default capacity and load factor.TShortIntHash
(int initialCapacity) Creates a newT#E#Hash
instance whose capacity is the next highest prime above initialCapacity + 1 unless that value is already prime.TShortIntHash
(int initialCapacity, float loadFactor) Creates a newTShortIntHash
instance with a prime value at or near the specified capacity and load factor.TShortIntHash
(int initialCapacity, float loadFactor, short no_entry_key, int no_entry_value) Creates a newTShortIntHash
instance with a prime value at or near the specified capacity and load factor. -
Method Summary
Modifier and TypeMethodDescriptionboolean
contains
(short val) Searches the set for valboolean
forEach
(TShortProcedure procedure) Executes procedure for each key in the map.short
Returns the value that is used to represent null as a key.int
Returns the value that is used to represent null.protected int
index
(short key) Locates the index of val.protected int
insertKey
(short val) Locates the index at which val can be inserted.void
protected void
removeAt
(int index) Releases the element currently stored at index.protected int
setUp
(int initialCapacity) initializes the hashtable to a prime capacity which is at least initialCapacity + 1.void
protected int
XinsertKey
(short key) Methods inherited from class gnu.trove.impl.hash.TPrimitiveHash
capacity
Methods inherited from class gnu.trove.impl.hash.THash
calculateGrownCapacity, clear, compact, computeMaxSize, computeNextAutoCompactionAmount, ensureCapacity, fastCeil, getAutoCompactionFactor, isEmpty, postInsertHook, reenableAutoCompaction, rehash, saturatedCast, setAutoCompactionFactor, size, tempDisableAutoCompaction, trimToSize
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Field Details
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_set
public transient short[] _setthe set of shorts -
no_entry_key
protected short no_entry_keykey that represents null NOTE: should not be modified after the Hash is created, but is not final because of Externalization -
no_entry_value
protected int no_entry_valuevalue that represents null NOTE: should not be modified after the Hash is created, but is not final because of Externalization -
consumeFreeSlot
protected boolean consumeFreeSlot
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Constructor Details
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TShortIntHash
public TShortIntHash()Creates a newT#E#Hash
instance with the default capacity and load factor. -
TShortIntHash
public TShortIntHash(int initialCapacity) Creates a newT#E#Hash
instance whose capacity is the next highest prime above initialCapacity + 1 unless that value is already prime.- Parameters:
initialCapacity
- anint
value
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TShortIntHash
public TShortIntHash(int initialCapacity, float loadFactor) Creates a newTShortIntHash
instance with a prime value at or near the specified capacity and load factor.- Parameters:
initialCapacity
- used to find a prime capacity for the table.loadFactor
- used to calculate the threshold over which rehashing takes place.
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TShortIntHash
public TShortIntHash(int initialCapacity, float loadFactor, short no_entry_key, int no_entry_value) Creates a newTShortIntHash
instance with a prime value at or near the specified capacity and load factor.- Parameters:
initialCapacity
- used to find a prime capacity for the table.loadFactor
- used to calculate the threshold over which rehashing takes place.no_entry_value
- value that represents null
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Method Details
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getNoEntryKey
public short getNoEntryKey()Returns the value that is used to represent null as a key. The default value is generally zero, but can be changed during construction of the collection.- Returns:
- the value that represents null
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getNoEntryValue
public int getNoEntryValue()Returns the value that is used to represent null. The default value is generally zero, but can be changed during construction of the collection.- Returns:
- the value that represents null
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setUp
protected int setUp(int initialCapacity) initializes the hashtable to a prime capacity which is at least initialCapacity + 1.- Overrides:
setUp
in classTPrimitiveHash
- Parameters:
initialCapacity
- anint
value- Returns:
- the actual capacity chosen
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contains
public boolean contains(short val) Searches the set for val- Parameters:
val
- anshort
value- Returns:
- a
boolean
value
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forEach
Executes procedure for each key in the map.- Parameters:
procedure
- aTShortProcedure
value- Returns:
- false if the loop over the set terminated because the procedure returned false for some value.
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removeAt
protected void removeAt(int index) Releases the element currently stored at index.- Overrides:
removeAt
in classTPrimitiveHash
- Parameters:
index
- anint
value
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index
protected int index(short key) Locates the index of val.- Parameters:
key
- anshort
value- Returns:
- the index of val or -1 if it isn't in the set.
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insertKey
protected int insertKey(short val) Locates the index at which val can be inserted. if there is already a value equal()ing val in the set, returns that value as a negative integer.- Parameters:
val
- anshort
value- Returns:
- an
int
value
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XinsertKey
protected int XinsertKey(short key) -
writeExternal
- Specified by:
writeExternal
in interfaceExternalizable
- Overrides:
writeExternal
in classTHash
- Throws:
IOException
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readExternal
- Specified by:
readExternal
in interfaceExternalizable
- Overrides:
readExternal
in classTHash
- Throws:
IOException
ClassNotFoundException
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