gnu.trove
Class TByteObjectHashMap<V>
TByteHash
gnu.trove.TByteObjectHashMap<V>
- Externalizable
public class TByteObjectHashMap<V>
extends TByteHash
implements Externalizable
An open addressed Map implementation for byte keys and Object values.
Created: Sun Nov 4 08:52:45 2001
protected V[] | _values - the values of the map
|
TByteObjectHashMap() - Creates a new
TByteObjectHashMap instance with the default
capacity and load factor.
|
TByteObjectHashMap(TByteHashingStrategy strategy) - Creates a new
TByteObjectHashMap instance with the default
capacity and load factor.
|
TByteObjectHashMap(int initialCapacity) - Creates a new
TByteObjectHashMap instance with a prime
capacity equal to or greater than initialCapacity and
with the default load factor.
|
TByteObjectHashMap(int initialCapacity, TByteHashingStrategy strategy) - Creates a new
TByteObjectHashMap instance whose capacity
is the next highest prime above initialCapacity + 1
unless that value is already prime.
|
TByteObjectHashMap(int initialCapacity, float loadFactor) - Creates a new
TByteObjectHashMap instance with a prime
capacity equal to or greater than initialCapacity and
with the specified load factor.
|
TByteObjectHashMap(int initialCapacity, float loadFactor, TByteHashingStrategy strategy) - Creates a new
TByteObjectHashMap instance with a prime
value at or near the specified capacity and load factor.
|
| T[] getValues(T[] a) - Return the values of the map; the runtime type of the returned array is that of
the specified array.
|
void | clear() - Empties the map.
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TByteObjectHashMap | clone()
|
boolean | containsKey(byte key) - checks for the present of key in the keys of the map.
|
boolean | containsValue(V val) - checks for the presence of val in the values of the map.
|
boolean | equals(Object other) - Compares this map with another map for equality of their stored
entries.
|
boolean | forEachEntry(TByteObjectProcedure procedure) - Executes procedure for each key/value entry in the
map.
|
boolean | forEachKey(TByteProcedure procedure) - Executes procedure for each key in the map.
|
boolean | forEachValue(TObjectProcedure procedure) - Executes procedure for each value in the map.
|
V | get(byte key) - retrieves the value for key
|
Object[] | getValues() - Returns the values of the map.
|
int | hashCode()
|
TByteObjectIterator | iterator()
|
byte[] | keys() - returns the keys of the map.
|
V | put(byte key, V value) - Inserts a key/value pair into the map.
|
void | readExternal(ObjectInput in)
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protected void | rehash(int newCapacity) - rehashes the map to the new capacity.
|
V | remove(byte key) - Deletes a key/value pair from the map.
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protected void | removeAt(int index) - removes the mapping at index from the map.
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boolean | retainEntries(TByteObjectProcedure 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.
|
void | transformValues(TObjectFunction function) - Transform the values in this map using function.
|
void | writeExternal(ObjectOutput out)
|
_values
protected V[] _values
the values of the map
TByteObjectHashMap
public TByteObjectHashMap()
Creates a new TByteObjectHashMap
instance with the default
capacity and load factor.
TByteObjectHashMap
public TByteObjectHashMap(TByteHashingStrategy strategy)
Creates a new TByteObjectHashMap
instance with the default
capacity and load factor.
strategy
- used to compute hash codes and to compare keys.
TByteObjectHashMap
public TByteObjectHashMap(int initialCapacity)
Creates a new TByteObjectHashMap
instance with a prime
capacity equal to or greater than initialCapacity and
with the default load factor.
initialCapacity
- an int
value
TByteObjectHashMap
public TByteObjectHashMap(int initialCapacity,
TByteHashingStrategy strategy)
Creates a new TByteObjectHashMap
instance whose capacity
is the next highest prime above initialCapacity + 1
unless that value is already prime.
initialCapacity
- an int
valuestrategy
- used to compute hash codes and to compare keys.
TByteObjectHashMap
public TByteObjectHashMap(int initialCapacity,
float loadFactor)
Creates a new TByteObjectHashMap
instance with a prime
capacity equal to or greater than initialCapacity and
with the specified load factor.
initialCapacity
- an int
valueloadFactor
- a float
value
TByteObjectHashMap
public TByteObjectHashMap(int initialCapacity,
float loadFactor,
TByteHashingStrategy strategy)
Creates a new TByteObjectHashMap
instance with a prime
value at or near the specified capacity and load factor.
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.
T[] getValues
public T[] getValues(T[] a)
Return the values of the map; the runtime type of the returned array is that of
the specified array.
a
- the array into which the elements of this collection are to be
stored, if it is big enough; otherwise, a new array of the same
runtime type is allocated for this purpose.
- an array containing the elements of this collection
clear
public void clear()
Empties the map.
clone
public TByteObjectHashMap clone()
- a deep clone of this collection
containsKey
public boolean containsKey(byte key)
checks for the present of key in the keys of the map.
containsValue
public boolean containsValue(V val)
checks for the presence of val in the values of the map.
equals
public boolean equals(Object other)
Compares this map with another map for equality of their stored
entries.
forEachEntry
public boolean forEachEntry(TByteObjectProcedure procedure)
Executes procedure for each key/value entry in the
map.
procedure
- a TOByteObjectProcedure
value
- false if the loop over the entries terminated because
the procedure returned false for some entry.
forEachKey
public boolean forEachKey(TByteProcedure procedure)
Executes procedure for each key in the map.
procedure
- a TByteProcedure
value
- false if the loop over the keys terminated because
the procedure returned false for some key.
forEachValue
public boolean forEachValue(TObjectProcedure procedure)
Executes procedure for each value in the map.
procedure
- a TObjectProcedure
value
- false if the loop over the values terminated because
the procedure returned false for some value.
get
public V get(byte key)
retrieves the value for key
- the value of key or (byte)0 if no such mapping exists.
getValues
public Object[] getValues()
Returns the values of the map.
hashCode
public int hashCode()
iterator
public TByteObjectIterator iterator()
- a TByteObjectIterator with access to this map's keys and values
keys
public byte[] keys()
returns the keys of the map.
put
public V put(byte key,
V value)
Inserts a key/value pair into the map.
key
- an byte
valuevalue
- an Object
value
- the previous value associated with key,
or (byte)0 if none was found.
readExternal
public void readExternal(ObjectInput in)
throws IOException,
ClassNotFoundException
rehash
protected void rehash(int newCapacity)
rehashes the map to the new capacity.
newCapacity
- an int
value
remove
public V remove(byte key)
Deletes a key/value pair from the map.
- an
Object
value or (byte)0 if no such mapping exists.
removeAt
protected void removeAt(int index)
removes the mapping at index from the map.
retainEntries
public boolean retainEntries(TByteObjectProcedure procedure)
Retains only those entries in the map for which the procedure
returns a true value.
procedure
- determines which entries to keep
- true if the map was modified.
setUp
protected int setUp(int initialCapacity)
initializes the hashtable to a prime capacity which is at least
initialCapacity + 1.
initialCapacity
- an int
value
- the actual capacity chosen
transformValues
public void transformValues(TObjectFunction function)
Transform the values in this map using function.
function
- a TObjectFunction
value
writeExternal
public void writeExternal(ObjectOutput out)
throws IOException
GNU Trove is copyright B) 2001-2007 Eric D. Friedman. All Rights Reserved.