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Java Source Code / Java Documentation » Development » PCJ » bak.pcj.map

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

bak.pcj.map .AbstractByteKeyMap

bak.pcj.map .ByteKeyOpenHashMap

ByteKeyOpenHashMap
public class ByteKeyOpenHashMap extends AbstractByteKeyMap implements ByteKeyMap,Cloneable,Serializable(Code)
	This class represents open addressing hash table based maps from byte values to objects. See Also: ByteKeyChainedHashMap See Also: java.util.Map author: Søren Bak version: 1.3 21-08-2003 19:45 since: 1.0

Field Summary
final public static int	DEFAULT_CAPACITY The default capacity of this map.
final public static int	DEFAULT_GROWTH_CHUNK The default chunk size with which to increase the capacity of this map.
final public static double	DEFAULT_GROWTH_FACTOR The default factor with which to increase the capacity of this map.
final public static double	DEFAULT_LOAD_FACTOR The default load factor of this map.

Constructor Summary
public	ByteKeyOpenHashMap() Creates a new hash map with capacity 11, a relative growth factor of 1.0, and a load factor of 75%.
public	ByteKeyOpenHashMap(ByteKeyMap map) Creates a new hash map with the same mappings as a specified map.
public	ByteKeyOpenHashMap(int capacity) Creates a new hash map with a specified capacity, a relative growth factor of 1.0, and a load factor of 75%.
public	ByteKeyOpenHashMap(double loadFactor) Creates a new hash map with a capacity of 11, a relative growth factor of 1.0, and a specified load factor.
public	ByteKeyOpenHashMap(int capacity, double loadFactor) Creates a new hash map with a specified capacity and load factor, and a relative growth factor of 1.0.
public	ByteKeyOpenHashMap(int capacity, double loadFactor, double growthFactor) Creates a new hash map with a specified capacity, load factor, and relative growth factor.
public	ByteKeyOpenHashMap(int capacity, double loadFactor, int growthChunk) Creates a new hash map with a specified capacity, load factor, and absolute growth factor. The map capacity increases to `capacity()+growthChunk`. This strategy is good for avoiding wasting memory.
public	ByteKeyOpenHashMap(ByteHashFunction keyhash) Creates a new hash map with capacity 11, a relative growth factor of 1.0, and a load factor of 75%.
public	ByteKeyOpenHashMap(ByteHashFunction keyhash, int capacity) Creates a new hash map with a specified capacity, a relative growth factor of 1.0, and a load factor of 75%.
public	ByteKeyOpenHashMap(ByteHashFunction keyhash, double loadFactor) Creates a new hash map with a capacity of 11, a relative growth factor of 1.0, and a specified load factor.
public	ByteKeyOpenHashMap(ByteHashFunction keyhash, int capacity, double loadFactor) Creates a new hash map with a specified capacity and load factor, and a relative growth factor of 1.0.
public	ByteKeyOpenHashMap(ByteHashFunction keyhash, int capacity, double loadFactor, double growthFactor) Creates a new hash map with a specified capacity, load factor, and relative growth factor.
public	ByteKeyOpenHashMap(ByteHashFunction keyhash, int capacity, double loadFactor, int growthChunk) Creates a new hash map with a specified capacity, load factor, and absolute growth factor. The map capacity increases to `capacity()+growthChunk`. This strategy is good for avoiding wasting memory.

Method Summary
public void	clear()
public Object	clone() Returns a clone of this hash map.
public boolean	containsKey(byte key)
public boolean	containsValue(Object value)
public ByteKeyMapIterator	entries()
public Object	get(byte key)
public boolean	isEmpty()
public ByteSet	keySet()
public Object	put(byte key, Object value)
public Object	remove(byte key)
public int	size()
public Collection	values()

Field Detail

DEFAULT_CAPACITY
final public static int DEFAULT_CAPACITY(Code)
	The default capacity of this map.

DEFAULT_GROWTH_CHUNK
final public static int DEFAULT_GROWTH_CHUNK(Code)
	The default chunk size with which to increase the capacity of this map.

DEFAULT_GROWTH_FACTOR
final public static double DEFAULT_GROWTH_FACTOR(Code)
	The default factor with which to increase the capacity of this map.

DEFAULT_LOAD_FACTOR
final public static double DEFAULT_LOAD_FACTOR(Code)
	The default load factor of this map.

Constructor Detail

ByteKeyOpenHashMap
public ByteKeyOpenHashMap()(Code)
	Creates a new hash map with capacity 11, a relative growth factor of 1.0, and a load factor of 75%.

ByteKeyOpenHashMap
public ByteKeyOpenHashMap(ByteKeyMap map)(Code)
	Creates a new hash map with the same mappings as a specified map. Parameters: map - the map whose mappings to put into the new map. throws: NullPointerException - if `map` is `null`.

ByteKeyOpenHashMap
public ByteKeyOpenHashMap(int capacity)(Code)
	Creates a new hash map with a specified capacity, a relative growth factor of 1.0, and a load factor of 75%. Parameters: capacity - the initial capacity of the map. throws: IllegalArgumentException - if `capacity` is negative.

ByteKeyOpenHashMap
public ByteKeyOpenHashMap(double loadFactor)(Code)
	Creates a new hash map with a capacity of 11, a relative growth factor of 1.0, and a specified load factor. Parameters: loadFactor - the load factor of the map. throws: IllegalArgumentException - if `capacity` is negative;if `loadFactor` is not positive.

ByteKeyOpenHashMap
public ByteKeyOpenHashMap(int capacity, double loadFactor)(Code)
	Creates a new hash map with a specified capacity and load factor, and a relative growth factor of 1.0. Parameters: capacity - the initial capacity of the map. Parameters: loadFactor - the load factor of the map. throws: IllegalArgumentException - if `capacity` is negative;if `loadFactor` is not positive.

ByteKeyOpenHashMap
public ByteKeyOpenHashMap(int capacity, double loadFactor, double growthFactor)(Code)
	Creates a new hash map with a specified capacity, load factor, and relative growth factor. The map capacity increases to `capacity()(1+growthFactor)`. This strategy is good for avoiding many capacity increases, but the amount of wasted memory is approximately the size of the map. Parameters:* capacity - the initial capacity of the map. Parameters: loadFactor - the load factor of the map. Parameters: growthFactor - the relative amount with which to increase thethe capacity when a capacity increase is needed. throws: IllegalArgumentException - if `capacity` is negative;if `loadFactor` is not positive;if `growthFactor` is not positive.

ByteKeyOpenHashMap
public ByteKeyOpenHashMap(int capacity, double loadFactor, int growthChunk)(Code)
	Creates a new hash map with a specified capacity, load factor, and absolute growth factor. The map capacity increases to `capacity()+growthChunk`. This strategy is good for avoiding wasting memory. However, an overhead is potentially introduced by frequent capacity increases. Parameters: capacity - the initial capacity of the map. Parameters: loadFactor - the load factor of the map. Parameters: growthChunk - the absolute amount with which to increase thethe capacity when a capacity increase is needed. throws: IllegalArgumentException - if `capacity` is negative;if `loadFactor` is not positive;if `growthChunk` is not positive.

ByteKeyOpenHashMap
public ByteKeyOpenHashMap(ByteHashFunction keyhash)(Code)
	Creates a new hash map with capacity 11, a relative growth factor of 1.0, and a load factor of 75%. Parameters: keyhash - the hash function to use when hashing keys. throws: NullPointerException - if `keyhash` is `null`.

ByteKeyOpenHashMap
public ByteKeyOpenHashMap(ByteHashFunction keyhash, int capacity)(Code)
	Creates a new hash map with a specified capacity, a relative growth factor of 1.0, and a load factor of 75%. Parameters: keyhash - the hash function to use when hashing keys. Parameters: capacity - the initial capacity of the map. throws: IllegalArgumentException - if `capacity` is negative. throws: NullPointerException - if `keyhash` is `null`.

ByteKeyOpenHashMap
public ByteKeyOpenHashMap(ByteHashFunction keyhash, double loadFactor)(Code)
	Creates a new hash map with a capacity of 11, a relative growth factor of 1.0, and a specified load factor. Parameters: keyhash - the hash function to use when hashing keys. Parameters: loadFactor - the load factor of the map. throws: IllegalArgumentException - if `capacity` is negative;if `loadFactor` is not positive. throws: NullPointerException - if `keyhash` is `null`.

ByteKeyOpenHashMap
public ByteKeyOpenHashMap(ByteHashFunction keyhash, int capacity, double loadFactor)(Code)
	Creates a new hash map with a specified capacity and load factor, and a relative growth factor of 1.0. Parameters: keyhash - the hash function to use when hashing keys. Parameters: capacity - the initial capacity of the map. Parameters: loadFactor - the load factor of the map. throws: IllegalArgumentException - if `capacity` is negative;if `loadFactor` is not positive. throws: NullPointerException - if `keyhash` is `null`.

ByteKeyOpenHashMap
public ByteKeyOpenHashMap(ByteHashFunction keyhash, int capacity, double loadFactor, double growthFactor)(Code)
	Creates a new hash map with a specified capacity, load factor, and relative growth factor. The map capacity increases to `capacity()(1+growthFactor)`. This strategy is good for avoiding many capacity increases, but the amount of wasted memory is approximately the size of the map. Parameters:* keyhash - the hash function to use when hashing keys. Parameters: capacity - the initial capacity of the map. Parameters: loadFactor - the load factor of the map. Parameters: growthFactor - the relative amount with which to increase thethe capacity when a capacity increase is needed. throws: IllegalArgumentException - if `capacity` is negative;if `loadFactor` is not positive;if `growthFactor` is not positive. throws: NullPointerException - if `keyhash` is `null`.

ByteKeyOpenHashMap
public ByteKeyOpenHashMap(ByteHashFunction keyhash, int capacity, double loadFactor, int growthChunk)(Code)
	Creates a new hash map with a specified capacity, load factor, and absolute growth factor. The map capacity increases to `capacity()+growthChunk`. This strategy is good for avoiding wasting memory. However, an overhead is potentially introduced by frequent capacity increases. Parameters: keyhash - the hash function to use when hashing keys. Parameters: capacity - the initial capacity of the map. Parameters: loadFactor - the load factor of the map. Parameters: growthChunk - the absolute amount with which to increase thethe capacity when a capacity increase is needed. throws: IllegalArgumentException - if `capacity` is negative;if `loadFactor` is not positive;if `growthChunk` is not positive. throws: NullPointerException - if `keyhash` is `null`.

Method Detail

clear
public void clear()(Code)

clone
public Object clone()(Code)
	Returns a clone of this hash map. a clone of this hash map. since: 1.1

containsKey
public boolean containsKey(byte key)(Code)

containsValue
public boolean containsValue(Object value)(Code)

entries
public ByteKeyMapIterator entries()(Code)

get
public Object get(byte key)(Code)

isEmpty
public boolean isEmpty()(Code)

keySet
public ByteSet keySet()(Code)

put
public Object put(byte key, Object value)(Code)

remove
public Object remove(byte key)(Code)

size
public int size()(Code)

values
public Collection values()(Code)

Methods inherited from bak.pcj.map.AbstractByteKeyMap

public void clear()(Code)(Java Doc)
public boolean containsKey(byte key)(Code)(Java Doc)
public boolean containsValue(Object value)(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
public Object get(byte key)(Code)(Java Doc)
public int hashCode()(Code)(Java Doc)
public boolean isEmpty()(Code)(Java Doc)
public void putAll(ByteKeyMap map)(Code)(Java Doc)
public Object remove(byte key)(Code)(Java Doc)
public int size()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
public void trimToSize()(Code)(Java Doc)

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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