Package it.unimi.dsi.util

Class AbstractPrefixMap

java.lang.Object

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

it.unimi.dsi.util.AbstractPrefixMap

All Implemented Interfaces:

Function<CharSequence,Long>, Object2LongFunction<CharSequence>, PrefixMap<MutableString>, StringMap<MutableString>, Serializable, Function<CharSequence,Long>, ToLongFunction<CharSequence>

Direct Known Subclasses:

ImmutableExternalPrefixMap, TernaryIntervalSearchTree

public abstract class AbstractPrefixMap
extends AbstractObject2LongFunction<CharSequence>
implements PrefixMap<MutableString>, Serializable

An abstract implementation of a prefix map.

This class provides the full services of a PrefixMap by implementing just getInterval(CharSequence) and getTerm(int, MutableString)

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected ObjectList<MutableString>	list	A cached view of the map as a list of mutable strings.
protected Object2ObjectFunction<Interval,MutableString>	prefixMap	A cached view of the map as a prefix map.
protected Object2ObjectFunction<CharSequence,Interval>	rangeMap	A cached view of the map as a range map.

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

defRetValue

Constructor Summary

Constructors

Constructor	Description
AbstractPrefixMap()

Method Summary

Modifier and Type	Method	Description
protected abstract Interval	getInterval(CharSequence prefix)	Returns the range of strings having a given prefix.
protected abstract MutableString	getTerm(int index, MutableString string)	Writes a string specified by index into a MutableString.
ObjectList<MutableString>	list()	Returns a list view of the domain of this string map (optional operation).
Object2ObjectFunction<Interval,MutableString>	prefixMap()	Returns a function mapping ranges of strings to common prefixes (optional operation).
Object2ObjectFunction<CharSequence,Interval>	rangeMap()	Returns a function mapping prefixes to ranges of strings.

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, containsKey, size

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, defaultReturnValue, defaultReturnValue, get, getLong, getOrDefault, getOrDefault, put, put, remove, removeLong

Field Details

rangeMap

protected Object2ObjectFunction<CharSequence,Interval> rangeMap

A cached view of the map as a range map.

prefixMap

protected Object2ObjectFunction<Interval,MutableString> prefixMap

A cached view of the map as a prefix map.

list

protected ObjectList<MutableString> list

A cached view of the map as a list of mutable strings.

Constructor Details

AbstractPrefixMap

public AbstractPrefixMap()

Method Details

getInterval

protected abstract Interval getInterval(CharSequence prefix)

Returns the range of strings having a given prefix.

Parameters:

prefix - a prefix.

Returns:

the corresponding range of strings as an interval.

getTerm

protected abstract MutableString getTerm(int index,
 MutableString string)

Writes a string specified by index into a MutableString.

Parameters:

index - the index of a string.

string - a mutable string.

Returns:

string.

rangeMap

public Object2ObjectFunction<CharSequence,Interval> rangeMap()

Description copied from interface: PrefixMap

Returns a function mapping prefixes to ranges of strings.

Specified by:

rangeMap in interface PrefixMap<MutableString>

Returns:

a function mapping prefixes to ranges of strings.

prefixMap

public Object2ObjectFunction<Interval,MutableString> prefixMap()

Description copied from interface: PrefixMap

Returns a function mapping ranges of strings to common prefixes (optional operation).

Specified by:

prefixMap in interface PrefixMap<MutableString>

Returns:

a function mapping ranges of strings to common prefixes, or null if this map does not support prefixes.

list

public ObjectList<MutableString> list()

Description copied from interface: StringMap

Returns a list view of the domain of this string map (optional operation).

Note that the list view acts as an inverse of the mapping implemented by this map.

Specified by:

list in interface StringMap<MutableString>

Returns:

a list view of the domain of this string map, or null if this map does not support this operation.