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

Class BmLongHashMap<V>

java.lang.Object

com._1c.g5.v8.bm.common.collections.BmLongHashMap<V>

All Implemented Interfaces:

IBmLongMap<V>

public class BmLongHashMap<V>
extends Object
implements IBmLongMap<V>

This code is adoption of 'HashMap' from Apache Harmony refactored to support primitive long keys.
This implementation doesn't support removal of entries via itearator.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	BmLongHashMap.MapIterator<V>

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

IBmLongMap.IEntry<V>

Constructor Summary

Constructors

Constructor	Description
BmLongHashMap()	Constructs a new empty HashMap instance.
BmLongHashMap(int capacity)	Constructs a new HashMap instance with the specified capacity.
BmLongHashMap(int capacity, float loadFactor)	Constructs a new HashMap instance with the specified capacity and load factor.

Method Summary

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

Constructor Detail

BmLongHashMap

public BmLongHashMap()

Constructs a new empty HashMap instance.

BmLongHashMap

public BmLongHashMap(int capacity)

Constructs a new HashMap instance with the specified capacity.

Parameters:

capacity - the initial capacity of this hash map.

Throws:

IllegalArgumentException - when the capacity is less than zero.

BmLongHashMap

public BmLongHashMap(int capacity,
                     float loadFactor)

Constructs a new HashMap instance with the specified capacity and load factor.

Parameters:

capacity - the initial capacity of this hash map.

loadFactor - the initial load factor.

Throws:

IllegalArgumentException - when the capacity is less than zero or the load factor is less or equal to zero.

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<V>

See Also:

IBmLongMap.isEmpty(), #size

get

public V get(long key)

Description copied from interface: IBmLongMap

Returns the value of the mapping with the specified key.

Specified by:

get in interface IBmLongMap<V>

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.

isEmpty

public boolean isEmpty()

Description copied from interface: IBmLongMap

Returns whether this map is empty.

Specified by:

isEmpty in interface IBmLongMap<V>

Returns:

true if this map has no elements, false otherwise.

See Also:

#size()

put

public V put(long key,
             V value)

Description copied from interface: IBmLongMap

Maps the specified key to the specified value.

Specified by:

put in interface IBmLongMap<V>

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.

remove

public V remove(long key)

Description copied from interface: IBmLongMap

Removes the mapping with the specified key from this map.

Specified by:

remove in interface IBmLongMap<V>

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.

size

public int size()

Returns the number of elements in this map.

Returns:

the number of elements in this map.

entryIterable

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

Description copied from interface: IBmLongMap

Returns a Iterable view of the entries in this map.

Specified by:

entryIterable in interface IBmLongMap<V>

Returns:

putAll

public void putAll(BmLongHashMap<V> values)

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

Parameters:

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

putAll

public void putAll(Map<Long,V> values)

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

Parameters:

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

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<V>

Parameters:

key - the key to check.

Returns:

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

values

public List<V> values()

Description copied from interface: IBmLongMap

Gets values contained in this map.

Specified by:

values in interface IBmLongMap<V>

Returns:

a collection of values, never null.

keys

public Collection<Long> keys()

Description copied from interface: IBmLongMap

Gets keys contained in this map.

Specified by:

keys in interface IBmLongMap<V>

Returns:

a collection of keys, never null.

computeKeyHash

protected int computeKeyHash(long key)

Computes key hash.

Parameters:

key - The key to compute hash for.

Returns:

the key hash.