be.bagofwords.cache.fastutil

Class AbstractLong2DoubleMap

java.lang.Object

be.bagofwords.cache.fastutil.AbstractLong2DoubleMap

All Implemented Interfaces:

Long2DoubleMap, LongMap<Double>, Serializable

Direct Known Subclasses:

Long2DoubleOpenHashMap

public abstract class AbstractLong2DoubleMap
extends Object
implements Long2DoubleMap, Serializable

An abstract class providing basic methods for maps implementing a type-specific interface.

Optional operations just throw an UnsupportedOperationException. Generic versions of accessors delegate to the corresponding type-specific counterparts following the interface rules (they take care of returning null on a missing key).

As a further help, this class provides a BasicEntry inner class that implements a type-specific version of Map.Entry; it is particularly useful for those classes that do not implement their own entries (e.g., most immutable maps).

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AbstractLong2DoubleMap.BasicEntry This class provides a basic but complete type-specific entry class for all those maps implementations that do not have entries on their own (e.g., most immutable maps).

Nested classes/interfaces inherited from interface be.bagofwords.cache.fastutil.Long2DoubleMap

Long2DoubleMap.FastEntrySet

Nested classes/interfaces inherited from interface be.bagofwords.cache.fastutil.LongMap

LongMap.Entry<V>

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractLong2DoubleMap()

Method Summary

Modifier and Type	Method and Description
it.unimi.dsi.fastutil.objects.ObjectSet<LongMap.Entry<Double>>	entrySet() Returns a set view of the mappings contained in this map.
boolean	equals(Object o)
int	hashCode() Returns a hash code for this map.
boolean	isEmpty()
it.unimi.dsi.fastutil.longs.LongSet	keySet() Returns a type-specific-set view of the keys of this map.
it.unimi.dsi.fastutil.doubles.DoubleCollection	values() Returns a type-specific-set view of the values of this map.

Methods inherited from class java.lang.Object

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

Methods inherited from interface be.bagofwords.cache.fastutil.Long2DoubleMap

long2DoubleEntrySet

Methods inherited from interface be.bagofwords.cache.fastutil.LongMap

clear, containsKey, containsValue, get, put, remove, size

Constructor Detail

AbstractLong2DoubleMap

protected AbstractLong2DoubleMap()

Method Detail

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface LongMap<Double>

keySet

public it.unimi.dsi.fastutil.longs.LongSet keySet()

Returns a type-specific-set view of the keys of this map.

The view is backed by the set returned by entrySet(). Note that no attempt is made at caching the result of this method, as this would require adding some attributes that lightweight implementations would not need. Subclasses may easily override this policy by calling this method and caching the result, but implementors are encouraged to write more efficient ad-hoc implementations.

Specified by:

keySet in interface Long2DoubleMap

Specified by:

keySet in interface LongMap<Double>

Returns:

a set view of the keys of this map; it may be safely cast to a type-specific interface.

See Also:

Map.keySet()

values

public it.unimi.dsi.fastutil.doubles.DoubleCollection values()

Returns a type-specific-set view of the values of this map.

The view is backed by the set returned by entrySet(). Note that no attempt is made at caching the result of this method, as this would require adding some attributes that lightweight implementations would not need. Subclasses may easily override this policy by calling this method and caching the result, but implementors are encouraged to write more efficient ad-hoc implementations.

Specified by:

values in interface Long2DoubleMap

Specified by:

values in interface LongMap<Double>

Returns:

a set view of the values of this map; it may be safely cast to a type-specific interface.

See Also:

Map.values()

entrySet

public it.unimi.dsi.fastutil.objects.ObjectSet<LongMap.Entry<Double>> entrySet()

Description copied from interface: Long2DoubleMap

Returns a set view of the mappings contained in this map.

Note that this specification strengthens the one given in Map.entrySet().

Specified by:

entrySet in interface Long2DoubleMap

Specified by:

entrySet in interface LongMap<Double>

Returns:

a set view of the mappings contained in this map.

See Also:

Map.entrySet()

hashCode

public int hashCode()

Returns a hash code for this map. The hash code of a map is computed by summing the hash codes of its entries.

Specified by:

hashCode in interface LongMap<Double>

Overrides:

hashCode in class Object

Returns:

a hash code for this map.

equals

public boolean equals(Object o)

Specified by:

equals in interface LongMap<Double>

Overrides:

equals in class Object