gnu.trove.impl.hash

Class TCharDoubleHash

java.lang.Object

gnu.trove.impl.hash.THash

gnu.trove.impl.hash.TPrimitiveHash

gnu.trove.impl.hash.TCharDoubleHash

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable

Direct Known Subclasses:

TCharDoubleHashMap

public abstract class TCharDoubleHash
extends TPrimitiveHash

An open addressed hashing implementation for char/double primitive entries. Created: Sun Nov 4 08:56:06 2001

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
char[]	_set the set of chars

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

_states, FREE, FULL, REMOVED

Constructor Summary

Constructors

Constructor and Description
TCharDoubleHash() Creates a new T#E#Hash instance with the default capacity and load factor.
TCharDoubleHash(int initialCapacity) Creates a new T#E#Hash instance whose capacity is the next highest prime above initialCapacity + 1 unless that value is already prime.
TCharDoubleHash(int initialCapacity, float loadFactor) Creates a new TCharDoubleHash instance with a prime value at or near the specified capacity and load factor.
TCharDoubleHash(int initialCapacity, float loadFactor, char no_entry_key, double no_entry_value) Creates a new TCharDoubleHash instance with a prime value at or near the specified capacity and load factor.

Method Summary

Modifier and Type	Method and Description
boolean	contains(char val) Searches the set for val
boolean	forEach(TCharProcedure procedure) Executes procedure for each key in the map.
char	getNoEntryKey() Returns the value that is used to represent null as a key.
double	getNoEntryValue() Returns the value that is used to represent null.
void	readExternal(java.io.ObjectInput in)
void	writeExternal(java.io.ObjectOutput out)

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

capacity

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

clear, compact, ensureCapacity, getAutoCompactionFactor, isEmpty, reenableAutoCompaction, setAutoCompactionFactor, size, tempDisableAutoCompaction, trimToSize

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_set

public transient char[] _set

the set of chars

Constructor Detail

TCharDoubleHash

public TCharDoubleHash()

Creates a new T#E#Hash instance with the default capacity and load factor.

TCharDoubleHash

public TCharDoubleHash(int initialCapacity)

Creates a new T#E#Hash instance whose capacity is the next highest prime above initialCapacity + 1 unless that value is already prime.

Parameters:

initialCapacity - an int value

TCharDoubleHash

public TCharDoubleHash(int initialCapacity,
                       float loadFactor)

Creates a new TCharDoubleHash 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.

TCharDoubleHash

public TCharDoubleHash(int initialCapacity,
                       float loadFactor,
                       char no_entry_key,
                       double no_entry_value)

Creates a new TCharDoubleHash 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

Method Detail

getNoEntryKey

public char 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

getNoEntryValue

public double 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

contains

public boolean contains(char val)

Searches the set for val

Parameters:

val - an char value

Returns:

a boolean value

forEach

public boolean forEach(TCharProcedure procedure)

Executes procedure for each key in the map.

Parameters:

procedure - a TCharProcedure value

Returns:

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

writeExternal

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

Specified by:

writeExternal in interface java.io.Externalizable

Overrides:

writeExternal in class THash

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 THash

Throws:

java.io.IOException

java.lang.ClassNotFoundException