Package it.unimi.dsi.sux4j.mph

Class AbstractHashFunction<K>

java.lang.Object

it.unimi.dsi.fastutil.objects.AbstractObject2LongFunction<K>

it.unimi.dsi.sux4j.mph.AbstractHashFunction<K>

All Implemented Interfaces:

Function<K,Long>, Object2LongFunction<K>, Size64, Serializable, Function<K,Long>, ToLongFunction<K>

Direct Known Subclasses:

CHDMinimalPerfectHashFunction, GOVMinimalPerfectHashFunction, HollowTrieDistributorMonotoneMinimalPerfectHashFunction, HollowTrieMonotoneMinimalPerfectHashFunction, LcpMonotoneMinimalPerfectHashFunction, MinimalPerfectHashFunction, PaCoTrieDistributorMonotoneMinimalPerfectHashFunction, TwoStepsGOV3Function, TwoStepsLcpMonotoneMinimalPerfectHashFunction, TwoStepsMWHCFunction, VLLcpMonotoneMinimalPerfectHashFunction, VLPaCoTrieDistributorMonotoneMinimalPerfectHashFunction, ZFastTrieDistributorMonotoneMinimalPerfectHashFunction

public abstract class AbstractHashFunction<K>
extends AbstractObject2LongFunction<K>
implements Size64

A very minimal abstract hash implementation. It extends AbstractObject2LongFunction, by Size64. Moreover, it provides a deprecated size() method that returns -1 if size64() is -1 or greater than Integer.MAX_VALUE, a size64() returning -1 (that you are invited to override), and a containsKey(Object) implementation that returns true.

See Also:

• Serialized Form

Field Summary

Fields inherited from class it.unimi.dsi.fastutil.objects.AbstractObject2LongFunction

defRetValue

Constructor Summary

Constructors

Constructor	Description
AbstractHashFunction()

Method Summary

Modifier and Type	Method	Description
boolean	containsKey(Object key)
int	size()	Deprecated.
long	size64()

Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractObject2LongFunction

defaultReturnValue, defaultReturnValue

Methods inherited from class java.lang.Object

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

Methods inherited from interface it.unimi.dsi.fastutil.Function

apply, clear

Methods inherited from interface java.util.function.Function

compose

Methods inherited from interface it.unimi.dsi.fastutil.objects.Object2LongFunction

andThen, andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, applyAsLong, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, get, getLong, getOrDefault, getOrDefault, put, put, remove, removeLong

Constructor Details

AbstractHashFunction

public AbstractHashFunction()

Method Details

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Function<K,Long>

size

@Deprecated
public int size()

Deprecated.

Specified by:

size in interface Function<K,Long>

Specified by:

size in interface Size64

size64

public long size64()

Specified by:

size64 in interface Size64