gnu.trove.map.hash

Class TCharIntHashMap

java.lang.Object

gnu.trove.impl.hash.THash

gnu.trove.impl.hash.TPrimitiveHash

gnu.trove.impl.hash.TCharIntHash

gnu.trove.map.hash.TCharIntHashMap

All Implemented Interfaces:

TCharIntMap, java.io.Externalizable, java.io.Serializable

public class TCharIntHashMap
extends TCharIntHash
implements TCharIntMap, java.io.Externalizable

An open addressed Map implementation for char keys and int values.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	TCharIntHashMap.TKeyView a view onto the keys of the map.
protected class	TCharIntHashMap.TValueView a view onto the values of the map.

Field Summary

Fields

Modifier and Type	Field and Description
protected int[]	_values the values of the map

Fields inherited from class gnu.trove.impl.hash.TCharIntHash

_set, consumeFreeSlot, no_entry_key, no_entry_value

Fields 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

Constructor Summary

Constructors

Constructor and Description
TCharIntHashMap() Creates a new TCharIntHashMap instance with the default capacity and load factor.
TCharIntHashMap(char[] keys, int[] values) Creates a new TCharIntHashMap instance containing all of the entries in the map passed in.
TCharIntHashMap(int initialCapacity) Creates a new TCharIntHashMap instance with a prime capacity equal to or greater than initialCapacity and with the default load factor.
TCharIntHashMap(int initialCapacity, float loadFactor) Creates a new TCharIntHashMap instance with a prime capacity equal to or greater than initialCapacity and with the specified load factor.
TCharIntHashMap(int initialCapacity, float loadFactor, char noEntryKey, int noEntryValue) Creates a new TCharIntHashMap instance with a prime capacity equal to or greater than initialCapacity and with the specified load factor.
TCharIntHashMap(TCharIntMap map) Creates a new TCharIntHashMap instance containing all of the entries in the map passed in.

Method Summary

Modifier and Type	Method and Description
int	adjustOrPutValue(char 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(char key, int amount) Adjusts the primitive value mapped to key.
void	clear() Empties the collection.
boolean	containsKey(char 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)
boolean	forEachEntry(TCharIntProcedure procedure) Executes procedure for each key/value entry in the map.
boolean	forEachKey(TCharProcedure procedure) Executes procedure for each key in the map.
boolean	forEachValue(TIntProcedure procedure) Executes procedure for each value in the map.
int	get(char key) Retrieves the value for key.
int	hashCode()
boolean	increment(char key) Increments the primitive value mapped to key by 1
boolean	isEmpty() Tells whether this set is currently holding any elements.
TCharIntIterator	iterator()
char[]	keys() Returns the keys of the map as an array of char values.
char[]	keys(char[] array) Returns the keys of the map.
TCharSet	keySet() Returns the keys of the map as a TCharSet
int	put(char key, int value) Inserts a key/value pair into the map.
void	putAll(java.util.Map<? extends java.lang.Character,? extends java.lang.Integer> map) Put all the entries from the given Map into this map.
void	putAll(TCharIntMap map) Put all the entries from the given map into this map.
int	putIfAbsent(char 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 set.
int	remove(char key) Deletes a key/value pair from the map.
protected void	removeAt(int index) Releases the element currently stored at index.
boolean	retainEntries(TCharIntProcedure 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.
TIntCollection	valueCollection() Returns the values of the map as a TIntCollection
int[]	values() Returns the values of the map as an array of #e# values.
int[]	values(int[] array) Returns the values of the map using an existing array.
void	writeExternal(java.io.ObjectOutput out)

Methods inherited from class gnu.trove.impl.hash.TCharIntHash

contains, forEach, getNoEntryKey, getNoEntryValue, index, insertKey, XinsertKey

Methods inherited from class gnu.trove.impl.hash.TPrimitiveHash

capacity

Methods inherited from class gnu.trove.impl.hash.THash

calculateGrownCapacity, compact, computeMaxSize, computeNextAutoCompactionAmount, ensureCapacity, fastCeil, getAutoCompactionFactor, postInsertHook, reenableAutoCompaction, saturatedCast, setAutoCompactionFactor, size, tempDisableAutoCompaction, trimToSize

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface gnu.trove.map.TCharIntMap

getNoEntryKey, getNoEntryValue, size

Field Detail

_values

protected transient int[] _values

the values of the map

Constructor Detail

TCharIntHashMap

public TCharIntHashMap()

Creates a new TCharIntHashMap instance with the default capacity and load factor.

TCharIntHashMap

public TCharIntHashMap(int initialCapacity)

Creates a new TCharIntHashMap instance with a prime capacity equal to or greater than initialCapacity and with the default load factor.

Parameters:

initialCapacity - an int value

TCharIntHashMap

public TCharIntHashMap(int initialCapacity,
                       float loadFactor)

Creates a new TCharIntHashMap instance with a prime capacity equal to or greater than initialCapacity and with the specified load factor.

Parameters:

initialCapacity - an int value

loadFactor - a float value

TCharIntHashMap

public TCharIntHashMap(int initialCapacity,
                       float loadFactor,
                       char noEntryKey,
                       int noEntryValue)

Creates a new TCharIntHashMap instance with a prime capacity equal to or greater than initialCapacity and with the specified load factor.

Parameters:

initialCapacity - an int value

loadFactor - a float value

noEntryKey - a char value that represents null for the Key set.

noEntryValue - a int value that represents null for the Value set.

TCharIntHashMap

public TCharIntHashMap(char[] keys,
                       int[] values)

Creates a new TCharIntHashMap instance containing all of the entries in the map passed in.

Parameters:

keys - a char array containing the keys for the matching values.

values - a int array containing the values.

TCharIntHashMap

public TCharIntHashMap(TCharIntMap map)

Creates a new TCharIntHashMap instance containing all of the entries in the map passed in.

Parameters:

map - a TCharIntMap that will be duplicated.

Method Detail

setUp

protected int setUp(int initialCapacity)

initializes the hashtable to a prime capacity which is at least initialCapacity + 1.

Overrides:

setUp in class TCharIntHash

Parameters:

initialCapacity - an int value

Returns:

the actual capacity chosen

rehash

protected void rehash(int newCapacity)

Rehashes the set.

Specified by:

rehash in class THash

Parameters:

newCapacity - an int value

put

public int put(char key,
               int value)

Inserts a key/value pair into the map.

Specified by:

put in interface TCharIntMap

Returns:

the previous value associated with key, or the "no entry" value if none was found (see TCharIntMap.getNoEntryValue()).

putIfAbsent

public int putIfAbsent(char key,
                       int value)

Inserts a key/value pair into the map if the specified key is not already associated with a value.

Specified by:

putIfAbsent in interface TCharIntMap

Returns:

the previous value associated with key, or the "no entry" value if none was found (see TCharIntMap.getNoEntryValue()).

putAll

public void putAll(java.util.Map<? extends java.lang.Character,? extends java.lang.Integer> map)

Put all the entries from the given Map into this map.

Specified by:

putAll in interface TCharIntMap

Parameters:

map - The Map from which entries will be obtained to put into this map.

putAll

public void putAll(TCharIntMap map)

Put all the entries from the given map into this map.

Specified by:

putAll in interface TCharIntMap

Parameters:

map - The map from which entries will be obtained to put into this map.

get

public int get(char key)

Retrieves the value for key.

Specified by:

get in interface TCharIntMap

Returns:

the previous value associated with key, or the "no entry" value if none was found (see TCharIntMap.getNoEntryValue()).

clear

public void clear()

Empties the collection.

Specified by:

clear in interface TCharIntMap

Overrides:

clear in class THash

isEmpty

public boolean isEmpty()

Tells whether this set is currently holding any elements.

Specified by:

isEmpty in interface TCharIntMap

Overrides:

isEmpty in class THash

Returns:

a boolean value

remove

public int remove(char key)

Deletes a key/value pair from the map.

Specified by:

remove in interface TCharIntMap

Parameters:

key - an char value

Returns:

the previous value associated with key, or the "no entry" value if none was found (see TCharIntMap.getNoEntryValue()).

removeAt

protected void removeAt(int index)

Releases the element currently stored at index.

Overrides:

removeAt in class TCharIntHash

Parameters:

index - an int value

keySet

public TCharSet keySet()

Returns the keys of the map as a TCharSet

Specified by:

keySet in interface TCharIntMap

Returns:

the keys of the map as a TCharSet

keys

public char[] keys()

Returns the keys of the map as an array of char values.

Specified by:

keys in interface TCharIntMap

Returns:

the keys of the map as an array of char values.

keys

public char[] keys(char[] array)

Returns the keys of the map.

Specified by:

keys in interface TCharIntMap

Parameters:

array - 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:

the keys of the map as an array.

valueCollection

public TIntCollection valueCollection()

Returns the values of the map as a TIntCollection

Specified by:

valueCollection in interface TCharIntMap

Returns:

the values of the map as a TIntCollection

values

public int[] values()

Returns the values of the map as an array of #e# values.

Specified by:

values in interface TCharIntMap

Returns:

the values of the map as an array of #e# values.

values

public int[] values(int[] array)

Returns the values of the map using an existing array.

Specified by:

values in interface TCharIntMap

Parameters:

array - 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:

the values of the map as an array of #e# values.

containsValue

public boolean containsValue(int val)

Checks for the presence of val in the values of the map.

Specified by:

containsValue in interface TCharIntMap

containsKey

public boolean containsKey(char key)

Checks for the present of key in the keys of the map.

Specified by:

containsKey in interface TCharIntMap

iterator

public TCharIntIterator iterator()

Specified by:

iterator in interface TCharIntMap

Returns:

a TCharIntIterator with access to this map's keys and values

forEachKey

public boolean forEachKey(TCharProcedure procedure)

Executes procedure for each key in the map.

Specified by:

forEachKey in interface TCharIntMap

Parameters:

procedure - a TCharProcedure value

Returns:

false if the loop over the keys terminated because the procedure returned false for some key.

forEachValue

public boolean forEachValue(TIntProcedure procedure)

Executes procedure for each value in the map.

Specified by:

forEachValue in interface TCharIntMap

Parameters:

procedure - a T#F#Procedure value

Returns:

false if the loop over the values terminated because the procedure returned false for some value.

forEachEntry

public boolean forEachEntry(TCharIntProcedure procedure)

Executes procedure for each key/value entry in the map.

Specified by:

forEachEntry in interface TCharIntMap

Parameters:

procedure - a TOCharIntProcedure value

Returns:

false if the loop over the entries terminated because the procedure returned false for some entry.

transformValues

public void transformValues(TIntFunction function)

Transform the values in this map using function.

Specified by:

transformValues in interface TCharIntMap

Parameters:

function - a TIntFunction value

retainEntries

public boolean retainEntries(TCharIntProcedure procedure)

Retains only those entries in the map for which the procedure returns a true value.

Specified by:

retainEntries in interface TCharIntMap

Parameters:

procedure - determines which entries to keep

Returns:

true if the map was modified.

increment

public boolean increment(char key)

Increments the primitive value mapped to key by 1

Specified by:

increment in interface TCharIntMap

Parameters:

key - the key of the value to increment

Returns:

true if a mapping was found and modified.

adjustValue

public boolean adjustValue(char key,
                           int amount)

Adjusts the primitive value mapped to key.

Specified by:

adjustValue in interface TCharIntMap

Parameters:

key - the key of the value to increment

amount - the amount to adjust the value by.

Returns:

true if a mapping was found and modified.

adjustOrPutValue

public int adjustOrPutValue(char 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 put_amount is put in the map.

Specified by:

adjustOrPutValue in interface TCharIntMap

Parameters:

key - the key of the value to increment

adjust_amount - the amount to adjust the value by

put_amount - the value put into the map if the key is not present

Returns:

the value present in the map after the adjustment or put operation

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

writeExternal

public void writeExternal(java.io.ObjectOutput out)
                   throws java.io.IOException

Specified by:

writeExternal in interface java.io.Externalizable

Overrides:

writeExternal in class TCharIntHash

Throws:

java.io.IOException

readExternal

public void readExternal(java.io.ObjectInput in)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException

Specified by:

readExternal in interface java.io.Externalizable

Overrides:

readExternal in class TCharIntHash

Throws:

java.io.IOException

java.lang.ClassNotFoundException