Package it.unimi.dsi.sux4j.mph
Class HollowTrieDistributorMonotoneMinimalPerfectHashFunction<T>
java.lang.Object
it.unimi.dsi.fastutil.objects.AbstractObject2LongFunction<K>
it.unimi.dsi.sux4j.mph.AbstractHashFunction<T>
it.unimi.dsi.sux4j.mph.HollowTrieDistributorMonotoneMinimalPerfectHashFunction<T>
- All Implemented Interfaces:
Function<T,
,Long> Object2LongFunction<T>
,Size64
,Serializable
,Function<T,
,Long> ToLongFunction<T>
public class HollowTrieDistributorMonotoneMinimalPerfectHashFunction<T>
extends AbstractHashFunction<T>
implements Size64, Serializable
A monotone minimal perfect hash implementation based on fixed-size bucketing that uses
a hollow trie as a distributor.
- See Also:
-
Field Summary
Fields inherited from class it.unimi.dsi.fastutil.objects.AbstractObject2LongFunction
defRetValue
-
Constructor Summary
ConstructorDescriptionHollowTrieDistributorMonotoneMinimalPerfectHashFunction
(Iterable<? extends T> elements, TransformationStrategy<? super T> transform) Creates a new hollow-trie-based monotone minimal perfect hash function using the given elements and transformation strategy, using the default temporary directory.HollowTrieDistributorMonotoneMinimalPerfectHashFunction
(Iterable<? extends T> elements, TransformationStrategy<? super T> transform, File tempDir) Creates a new hollow-trie-based monotone minimal perfect hash function using the given elements, transformation strategy, and temporary directory. -
Method Summary
Methods inherited from class it.unimi.dsi.sux4j.mph.AbstractHashFunction
containsKey, size
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.objects.Object2LongFunction
andThen, andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, applyAsLong, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, get, getOrDefault, getOrDefault, put, put, remove, removeLong
-
Field Details
-
serialVersionUID
public static final long serialVersionUID- See Also:
-
-
Constructor Details
-
HollowTrieDistributorMonotoneMinimalPerfectHashFunction
public HollowTrieDistributorMonotoneMinimalPerfectHashFunction(Iterable<? extends T> elements, TransformationStrategy<? super T> transform) throws IOException Creates a new hollow-trie-based monotone minimal perfect hash function using the given elements and transformation strategy, using the default temporary directory.- Parameters:
elements
- the elements among which the trie must be able to rank.transform
- a transformation strategy that must turn the elements inelements
into a list of distinct, prefix-free, lexicographically increasing (in iteration order) bit vectors.- Throws:
IOException
-
HollowTrieDistributorMonotoneMinimalPerfectHashFunction
public HollowTrieDistributorMonotoneMinimalPerfectHashFunction(Iterable<? extends T> elements, TransformationStrategy<? super T> transform, File tempDir) throws IOException Creates a new hollow-trie-based monotone minimal perfect hash function using the given elements, transformation strategy, and temporary directory.- Parameters:
elements
- the elements among which the trie must be able to rank.transform
- a transformation strategy that must turn the elements inelements
into a list of distinct, prefix-free, lexicographically increasing (in iteration order) bit vectors.tempDir
- a directory for the temporary files created during construction by theHollowTrieDistributor
, ornull
for the default temporary directory.- Throws:
IOException
-
-
Method Details
-
getLong
- Specified by:
getLong
in interfaceObject2LongFunction<T>
-
size64
public long size64()- Specified by:
size64
in interfaceSize64
- Overrides:
size64
in classAbstractHashFunction<T>
-
numBits
public long numBits() -
main
-