org.mini2Dx.core.collections.concurrent

Class ConcurrentShortMap<T>

java.lang.Object

org.mini2Dx.core.collections.ShortMap<T>

org.mini2Dx.core.collections.concurrent.ConcurrentShortMap<T>

All Implemented Interfaces:

java.lang.Iterable<ShortMap.Entry<T>>, ConcurrentCollection

public class ConcurrentShortMap<T>
extends ShortMap<T>
implements ConcurrentCollection

Nested Class Summary

Nested classes/interfaces inherited from class org.mini2Dx.core.collections.ShortMap

ShortMap.Entries<V>, ShortMap.Entry<V>, ShortMap.Keys, ShortMap.Values<V>

Field Summary

Fields

Modifier and Type	Field and Description
protected org.mini2Dx.lockprovider.ReadWriteLock	lock

Fields inherited from class org.mini2Dx.core.collections.ShortMap

size

Constructor Summary

Constructors

Constructor and Description
ConcurrentShortMap()
ConcurrentShortMap(int initialCapacity)
ConcurrentShortMap(int initialCapacity, float loadFactor)
ConcurrentShortMap(ShortMap<? extends T> map) NOTE: read access to the other map is not thread-safe

Method Summary

Modifier and Type	Method and Description
void	clear()
void	clear(int maximumCapacity) Clears the map and reduces the size of the backing arrays to be the specified capacity if they are larger.
boolean	containsKey(short key)
boolean	containsValue(java.lang.Object value, boolean identity) Returns true if the specified value is in the map.
void	ensureCapacity(int additionalCapacity) Increases the size of the backing array to accommodate the specified number of additional items.
ShortMap.Entries<T>	entries() Returns an iterator for the entries in the map.
boolean	equals(java.lang.Object object)
short	findKey(java.lang.Object value, boolean identity, short notFound) Returns the key for the specified value, or notFound if it is not in the map.
T	get(short key, T defaultValue)
org.mini2Dx.lockprovider.ReadWriteLock	getLock() Returns the collection's ReadWriteLock
int	hashCode()
ShortMap.Keys	keys() Returns an iterator for the keys in the map.
T	put(short key, T value)
void	putAll(ShortMap<T> map)
boolean	putIfAbsent(short key, T value) Puts a key/value if the key is not already present
boolean	putIfPresent(short key, T value) Puts a key/value if the key is already present
T	remove(short key)
void	shrink(int maximumCapacity) Reduces the size of the backing arrays to be the specified capacity or less.
int	size() Returns the size in a thread-safe manner
java.lang.String	toString()
ShortMap.Values<T>	values() Returns an iterator for the values in the map.

Methods inherited from class org.mini2Dx.core.collections.ShortMap

get, iterator

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

lock

protected org.mini2Dx.lockprovider.ReadWriteLock lock

Constructor Detail

ConcurrentShortMap

public ConcurrentShortMap()

ConcurrentShortMap

public ConcurrentShortMap(int initialCapacity)

ConcurrentShortMap

public ConcurrentShortMap(int initialCapacity,
                          float loadFactor)

ConcurrentShortMap

public ConcurrentShortMap(ShortMap<? extends T> map)

NOTE: read access to the other map is not thread-safe

Parameters:

map -

Method Detail

size

public int size()

Returns the size in a thread-safe manner

Returns:

0 if empty

put

public T put(short key,
             T value)

Overrides:

put in class ShortMap<T>

putIfAbsent

public boolean putIfAbsent(short key,
                           T value)

Puts a key/value if the key is not already present

Parameters:

key - The key to put if absent

value - The value to put if absent

Returns:

True if the value was put

putIfPresent

public boolean putIfPresent(short key,
                            T value)

Puts a key/value if the key is already present

Parameters:

key - The key to put if present

value - The value to put if present

Returns:

True if the value was put

putAll

public void putAll(ShortMap<T> map)

Overrides:

putAll in class ShortMap<T>

get

public T get(short key,
             T defaultValue)

Overrides:

get in class ShortMap<T>

remove

public T remove(short key)

Overrides:

remove in class ShortMap<T>

shrink

public void shrink(int maximumCapacity)

Description copied from class: ShortMap

Reduces the size of the backing arrays to be the specified capacity or less. If the capacity is already less, nothing is done. If the map contains more items than the specified capacity, the next highest power of two capacity is used instead.

Overrides:

shrink in class ShortMap<T>

clear

public void clear(int maximumCapacity)

Description copied from class: ShortMap

Clears the map and reduces the size of the backing arrays to be the specified capacity if they are larger.

Overrides:

clear in class ShortMap<T>

clear

public void clear()

Overrides:

clear in class ShortMap<T>

containsValue

public boolean containsValue(java.lang.Object value,
                             boolean identity)

Description copied from class: ShortMap

Returns true if the specified value is in the map. Note this traverses the entire map and compares every value, which may be an expensive operation.

Overrides:

containsValue in class ShortMap<T>

containsKey

public boolean containsKey(short key)

Overrides:

containsKey in class ShortMap<T>

findKey

public short findKey(java.lang.Object value,
                     boolean identity,
                     short notFound)

Description copied from class: ShortMap

Returns the key for the specified value, or notFound if it is not in the map. Note this traverses the entire map and compares every value, which may be an expensive operation.

Overrides:

findKey in class ShortMap<T>

identity - If true, uses == to compare the specified value with values in the map. If false, uses ShortMap.equals(Object).

ensureCapacity

public void ensureCapacity(int additionalCapacity)

Description copied from class: ShortMap

Increases the size of the backing array to accommodate the specified number of additional items. Useful before adding many items to avoid multiple backing array resizes.

Overrides:

ensureCapacity in class ShortMap<T>

hashCode

public int hashCode()

Overrides:

hashCode in class ShortMap<T>

equals

public boolean equals(java.lang.Object object)

Overrides:

equals in class ShortMap<T>

toString

public java.lang.String toString()

Overrides:

toString in class ShortMap<T>

entries

public ShortMap.Entries<T> entries()

Description copied from class: ShortMap

Returns an iterator for the entries in the map. Remove is supported. Note that the same iterator instance is returned each time this method is called. Use the ShortMap.Entries constructor for nested or multithreaded iteration.

Overrides:

entries in class ShortMap<T>

values

public ShortMap.Values<T> values()

Description copied from class: ShortMap

Returns an iterator for the values in the map. Remove is supported. Note that the same iterator instance is returned each time this method is called. Use the ShortMap.Entries constructor for nested or multithreaded iteration.

Overrides:

values in class ShortMap<T>

keys

public ShortMap.Keys keys()

Description copied from class: ShortMap

Returns an iterator for the keys in the map. Remove is supported. Note that the same iterator instance is returned each time this method is called. Use the ShortMap.Entries constructor for nested or multithreaded iteration.

Overrides:

keys in class ShortMap<T>

getLock

public org.mini2Dx.lockprovider.ReadWriteLock getLock()

Description copied from interface: ConcurrentCollection

Returns the collection's ReadWriteLock

Specified by:

getLock in interface ConcurrentCollection

Returns:

the collection's ReadWriteLock