Package com._1c.g5.v8.bm.common.collections

Class BmLongSegmentSyncMap<T>

java.lang.Object

com._1c.g5.v8.bm.common.collections.BmLongSegmentSyncMap<T>

All Implemented Interfaces:

IBmLongMap<T>

public class BmLongSegmentSyncMap<T>
extends Object
implements IBmLongMap<T>

A Long map with segment synchronization. Implementation limited only for put/get/remove operations. Iterations are not supported.

Nested Class Summary

Nested classes/interfaces inherited from interface com._1c.g5.v8.bm.common.collections.IBmLongMap

IBmLongMap.IEntry<V>

Field Summary

Fields

Modifier and Type	Field	Description
protected BmLongHashMap<T>[]	data

Constructor Summary

Constructors

Constructor	Description
BmLongSegmentSyncMap(int segments)	Constructs a new instance.

Method Summary

Modifier and Type	Method	Description
BmLongHashMap<T>	asMap()	Creates a copy of this map.
void	clear()	Removes all mappings from this hash map, leaving it empty.
boolean	containsKey(long key)	Checks if the map contains the specified key.
List<Long>	copyKeys()	Copies keys.
protected BmLongHashMap<T>	createBmLongHashMap(int i)	Creates map for segment.
Iterable<IBmLongMap.IEntry<T>>	entryIterable()	Returns a Iterable view of the entries in this map.
T	get(long key)	Returns the value of the mapping with the specified key.
protected BmLongHashMap<T>	getSegment(int i)	Gets segment by index.
boolean	isEmpty()	Returns whether this map is empty.
Collection<Long>	keys()	Gets keys contained in this map.
T	put(long key, T value)	Maps the specified key to the specified value.
void	putAll(Map<Long,T> map)	Copies all of the mappings from the specified map to this map.
T	remove(long key)	Removes the mapping with the specified key from this map.
int	size()	Returns the number of elements in this map.
Collection<T>	values()	Gets values contained in this map.

Methods inherited from class java.lang.Object

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

Field Detail

data

protected volatile BmLongHashMap<T>[] data

Constructor Detail

BmLongSegmentSyncMap

public BmLongSegmentSyncMap(int segments)

Constructs a new instance.

Parameters:

segments - The segment count, must be a power of two.

Method Detail

clear

public void clear()

Description copied from interface: IBmLongMap

Removes all mappings from this hash map, leaving it empty.

Specified by:

clear in interface IBmLongMap<T>

See Also:

IBmLongMap.isEmpty(), #size

get

public T get(long key)

Description copied from interface: IBmLongMap

Returns the value of the mapping with the specified key.

Specified by:

get in interface IBmLongMap<T>

Parameters:

key - the key.

Returns:

the value of the mapping with the specified key, or null if no mapping for the specified key is found.

put

public T put(long key,
             T value)

Description copied from interface: IBmLongMap

Maps the specified key to the specified value.

Specified by:

put in interface IBmLongMap<T>

Parameters:

key - the key.

value - the value.

Returns:

the value of any previous mapping with the specified key or null if there was no such mapping.

putAll

public void putAll(Map<Long,T> map)

Copies all of the mappings from the specified map to this map.

Parameters:

map - the map to copy mappings from, may not be null.

remove

public T remove(long key)

Description copied from interface: IBmLongMap

Removes the mapping with the specified key from this map.

Specified by:

remove in interface IBmLongMap<T>

Parameters:

key - the key of the mapping to remove.

Returns:

the value of the removed mapping or null if no mapping for the specified key was found.

containsKey

public boolean containsKey(long key)

Description copied from interface: IBmLongMap

Checks if the map contains the specified key.

Specified by:

containsKey in interface IBmLongMap<T>

Parameters:

key - the key to check.

Returns:

true if the map contains the specified key, false otherwise.

entryIterable

public Iterable<IBmLongMap.IEntry<T>> entryIterable()

Description copied from interface: IBmLongMap

Returns a Iterable view of the entries in this map.

Specified by:

entryIterable in interface IBmLongMap<T>

Returns:

keys

public Collection<Long> keys()

Description copied from interface: IBmLongMap

Gets keys contained in this map.

Specified by:

keys in interface IBmLongMap<T>

Returns:

a collection of keys, never null.

values

public Collection<T> values()

Description copied from interface: IBmLongMap

Gets values contained in this map.

Specified by:

values in interface IBmLongMap<T>

Returns:

a collection of values, never null.

copyKeys

public List<Long> copyKeys()

Copies keys.

Returns:

a list containing all the keys contained in this map, never null.

size

public int size()

Returns the number of elements in this map.

Returns:

the number of elements in this map.

asMap

public BmLongHashMap<T> asMap()

Creates a copy of this map.

Returns:

a BmLongHashMap containing all the mapping this map contains, never null.

isEmpty

public boolean isEmpty()

Description copied from interface: IBmLongMap

Returns whether this map is empty.

Specified by:

isEmpty in interface IBmLongMap<T>

Returns:

true if this map has no elements, false otherwise.

See Also:

#size()

getSegment

protected final BmLongHashMap<T> getSegment(int i)

Gets segment by index.

Parameters:

i - The segment index.

Returns:

the segment.

createBmLongHashMap

protected BmLongHashMap<T> createBmLongHashMap(int i)

Creates map for segment.

Parameters:

i - The segment index.

Returns:

the map for segment, never null.