Package gnu.trove
Class TShortIntHashMap
- java.lang.Object
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- gnu.trove.THash
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- gnu.trove.TPrimitiveHash
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- gnu.trove.TShortHash
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- gnu.trove.TShortIntHashMap
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- All Implemented Interfaces:
TShortHashingStrategy
,java.io.Externalizable
,java.io.Serializable
,java.lang.Cloneable
public class TShortIntHashMap extends TShortHash implements java.io.Externalizable
An open addressed Map implementation for short keys and int values. Created: Sun Nov 4 08:52:45 2001- Author:
- Eric D. Friedman
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description protected int[]
_values
the values of the map-
Fields inherited from class gnu.trove.TShortHash
_hashingStrategy, _set
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Fields inherited from class gnu.trove.TPrimitiveHash
_states, FREE, FULL, REMOVED
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Fields inherited from class gnu.trove.THash
_autoCompactionFactor, _autoCompactRemovesRemaining, _free, _loadFactor, _maxSize, _size, DEFAULT_INITIAL_CAPACITY, DEFAULT_LOAD_FACTOR
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Constructor Summary
Constructors Constructor Description TShortIntHashMap()
Creates a newTShortIntHashMap
instance with the default capacity and load factor.TShortIntHashMap(int initialCapacity)
Creates a newTShortIntHashMap
instance with a prime capacity equal to or greater than initialCapacity and with the default load factor.TShortIntHashMap(int initialCapacity, float loadFactor)
Creates a newTShortIntHashMap
instance with a prime capacity equal to or greater than initialCapacity and with the specified load factor.TShortIntHashMap(int initialCapacity, float loadFactor, TShortHashingStrategy strategy)
Creates a newTShortIntHashMap
instance with a prime value at or near the specified capacity and load factor.TShortIntHashMap(int initialCapacity, TShortHashingStrategy strategy)
Creates a newTShortIntHashMap
instance whose capacity is the next highest prime above initialCapacity + 1 unless that value is already prime.TShortIntHashMap(TShortHashingStrategy strategy)
Creates a newTShortIntHashMap
instance with the default capacity and load factor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
adjustOrPutValue(short key, int adjust_amount, int put_amount)
Adjusts the primitive value mapped to the key if the key is present in the map.boolean
adjustValue(short key, int amount)
Adjusts the primitive value mapped to key.void
clear()
Empties the map.java.lang.Object
clone()
boolean
containsKey(short key)
checks for the present of key in the keys of the map.boolean
containsValue(int val)
checks for the presence of val in the values of the map.boolean
equals(java.lang.Object other)
Compares this map with another map for equality of their stored entries.boolean
forEachEntry(TShortIntProcedure procedure)
Executes procedure for each key/value entry in the map.boolean
forEachKey(TShortProcedure procedure)
Executes procedure for each key in the map.boolean
forEachValue(TIntProcedure procedure)
Executes procedure for each value in the map.int
get(short key)
retrieves the value for keyint[]
getValues()
Returns the values of the map.int
hashCode()
boolean
increment(short key)
Increments the primitive value mapped to key by 1TShortIntIterator
iterator()
short[]
keys()
returns the keys of the map.short[]
keys(short[] a)
returns the keys of the map.int
put(short key, int value)
Inserts a key/value pair into the map.void
putAll(TShortIntHashMap map)
Put all the entries from the given map into this map.int
putIfAbsent(short key, int value)
Inserts a key/value pair into the map if the specified key is not already associated with a value.void
readExternal(java.io.ObjectInput in)
protected void
rehash(int newCapacity)
rehashes the map to the new capacity.int
remove(short key)
Deletes a key/value pair from the map.protected void
removeAt(int index)
removes the mapping at index from the map.boolean
retainEntries(TShortIntProcedure procedure)
Retains only those entries in the map for which the procedure returns a true value.protected int
setUp(int initialCapacity)
initializes the hashtable to a prime capacity which is at least initialCapacity + 1.java.lang.String
toString()
void
transformValues(TIntFunction function)
Transform the values in this map using function.void
writeExternal(java.io.ObjectOutput out)
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Methods inherited from class gnu.trove.TShortHash
computeHashCode, contains, forEach, index, insertionIndex
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Methods inherited from class gnu.trove.TPrimitiveHash
capacity
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Methods inherited from class gnu.trove.THash
calculateGrownCapacity, compact, ensureCapacity, getAutoCompactionFactor, isEmpty, postInsertHook, reenableAutoCompaction, setAutoCompactionFactor, size, tempDisableAutoCompaction, trimToSize
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Constructor Detail
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TShortIntHashMap
public TShortIntHashMap()
Creates a newTShortIntHashMap
instance with the default capacity and load factor.
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TShortIntHashMap
public TShortIntHashMap(int initialCapacity)
Creates a newTShortIntHashMap
instance with a prime capacity equal to or greater than initialCapacity and with the default load factor.- Parameters:
initialCapacity
- anint
value
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TShortIntHashMap
public TShortIntHashMap(int initialCapacity, float loadFactor)
Creates a newTShortIntHashMap
instance with a prime capacity equal to or greater than initialCapacity and with the specified load factor.- Parameters:
initialCapacity
- anint
valueloadFactor
- afloat
value
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TShortIntHashMap
public TShortIntHashMap(TShortHashingStrategy strategy)
Creates a newTShortIntHashMap
instance with the default capacity and load factor.- Parameters:
strategy
- used to compute hash codes and to compare keys.
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TShortIntHashMap
public TShortIntHashMap(int initialCapacity, TShortHashingStrategy strategy)
Creates a newTShortIntHashMap
instance whose capacity is the next highest prime above initialCapacity + 1 unless that value is already prime.- Parameters:
initialCapacity
- anint
valuestrategy
- used to compute hash codes and to compare keys.
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TShortIntHashMap
public TShortIntHashMap(int initialCapacity, float loadFactor, TShortHashingStrategy strategy)
Creates a newTShortIntHashMap
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.strategy
- used to compute hash codes and to compare keys.
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Method Detail
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clone
public java.lang.Object clone()
- Overrides:
clone
in classTShortHash
- Returns:
- a deep clone of this collection
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iterator
public TShortIntIterator iterator()
- Returns:
- a TShortIntIterator with access to this map's keys and values
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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 classTShortHash
- Parameters:
initialCapacity
- anint
value- Returns:
- the actual capacity chosen
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put
public int put(short key, int value)
Inserts a key/value pair into the map.- Parameters:
key
- anshort
valuevalue
- anint
value- Returns:
- the previous value associated with key, or (short)0 if none was found.
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putIfAbsent
public int putIfAbsent(short key, int value)
Inserts a key/value pair into the map if the specified key is not already associated with a value.- Parameters:
key
- anshort
valuevalue
- anint
value- Returns:
- the previous value associated with key, or (short)0 if none was found.
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putAll
public void putAll(TShortIntHashMap map)
Put all the entries from the given map into this map.- Parameters:
map
- The map from which entries will be obtained to put into this map.
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rehash
protected void rehash(int newCapacity)
rehashes the map to the new capacity.
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get
public int get(short key)
retrieves the value for key- Parameters:
key
- anshort
value- Returns:
- the value of key or (short)0 if no such mapping exists.
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remove
public int remove(short key)
Deletes a key/value pair from the map.- Parameters:
key
- anshort
value- Returns:
- an
int
value, or (short)0 if no mapping for key exists
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equals
public boolean equals(java.lang.Object other)
Compares this map with another map for equality of their stored entries.- Overrides:
equals
in classjava.lang.Object
- Parameters:
other
- anObject
value- Returns:
- a
boolean
value
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hashCode
public int hashCode()
- Overrides:
hashCode
in classjava.lang.Object
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removeAt
protected void removeAt(int index)
removes the mapping at index from the map.- Overrides:
removeAt
in classTShortHash
- Parameters:
index
- anint
value
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getValues
public int[] getValues()
Returns the values of the map.- Returns:
- a
Collection
value
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keys
public short[] keys()
returns the keys of the map.- Returns:
- a
Set
value
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keys
public short[] keys(short[] a)
returns the keys of the map.- Parameters:
a
- the array into which the elements of the list are to be stored, if it is big enough; otherwise, a new array of the same type is allocated for this purpose.- Returns:
- a
Set
value
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containsValue
public boolean containsValue(int val)
checks for the presence of val in the values of the map.- Parameters:
val
- anint
value- Returns:
- a
boolean
value
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containsKey
public boolean containsKey(short key)
checks for the present of key in the keys of the map.- Parameters:
key
- anshort
value- Returns:
- a
boolean
value
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forEachKey
public boolean forEachKey(TShortProcedure procedure)
Executes procedure for each key in the map.- Parameters:
procedure
- aTShortProcedure
value- Returns:
- false if the loop over the keys terminated because the procedure returned false for some key.
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forEachValue
public boolean forEachValue(TIntProcedure procedure)
Executes procedure for each value in the map.- Parameters:
procedure
- aTIntProcedure
value- Returns:
- false if the loop over the values terminated because the procedure returned false for some value.
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forEachEntry
public boolean forEachEntry(TShortIntProcedure procedure)
Executes procedure for each key/value entry in the map.- Parameters:
procedure
- aTOShortIntProcedure
value- Returns:
- false if the loop over the entries terminated because the procedure returned false for some entry.
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retainEntries
public boolean retainEntries(TShortIntProcedure procedure)
Retains only those entries in the map for which the procedure returns a true value.- Parameters:
procedure
- determines which entries to keep- Returns:
- true if the map was modified.
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transformValues
public void transformValues(TIntFunction function)
Transform the values in this map using function.- Parameters:
function
- aTIntFunction
value
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increment
public boolean increment(short key)
Increments the primitive value mapped to key by 1- Parameters:
key
- the key of the value to increment- Returns:
- true if a mapping was found and modified.
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adjustValue
public boolean adjustValue(short key, int amount)
Adjusts the primitive value mapped to key.- Parameters:
key
- the key of the value to incrementamount
- the amount to adjust the value by.- Returns:
- true if a mapping was found and modified.
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adjustOrPutValue
public int adjustOrPutValue(short key, int adjust_amount, int put_amount)
Adjusts the primitive value mapped to the key if the key is present in the map. Otherwise, the initial_value is put in the map.- Parameters:
key
- the key of the value to incrementadjust_amount
- the amount to adjust the value byput_amount
- the value put into the map if the key is not initial present- Returns:
- the value present in the map after the adjustment or put operation
- Since:
- 2.0b1
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writeExternal
public void writeExternal(java.io.ObjectOutput out) throws java.io.IOException
- Specified by:
writeExternal
in interfacejava.io.Externalizable
- Overrides:
writeExternal
in classTHash
- Throws:
java.io.IOException
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readExternal
public void readExternal(java.io.ObjectInput in) throws java.io.IOException, java.lang.ClassNotFoundException
- Specified by:
readExternal
in interfacejava.io.Externalizable
- Overrides:
readExternal
in classTHash
- Throws:
java.io.IOException
java.lang.ClassNotFoundException
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toString
public java.lang.String toString()
- Overrides:
toString
in classjava.lang.Object
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