Package it.unimi.dsi.big.util
Interface StringMap<S extends java.lang.CharSequence>
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- All Superinterfaces:
it.unimi.dsi.fastutil.Function<java.lang.CharSequence,java.lang.Long>
,java.util.function.Function<java.lang.CharSequence,java.lang.Long>
,it.unimi.dsi.fastutil.objects.Object2LongFunction<java.lang.CharSequence>
,java.io.Serializable
,it.unimi.dsi.fastutil.Size64
,java.util.function.ToLongFunction<java.lang.CharSequence>
- All Known Subinterfaces:
PrefixMap<S>
- All Known Implementing Classes:
AbstractPrefixMap
,ImmutableExternalPrefixMap
,LiterallySignedStringMap
,LongBigListSignedStringMap
,ShiftAddXorSignedStringMap
,StringMaps.PrefixMapWrapper
,StringMaps.StringMapWrapper
,StringMaps.SynchronizedPrefixMap
,StringMaps.SynchronizedStringMap
,TernaryIntervalSearchTree
public interface StringMap<S extends java.lang.CharSequence> extends it.unimi.dsi.fastutil.objects.Object2LongFunction<java.lang.CharSequence>, it.unimi.dsi.fastutil.Size64, java.io.Serializable
A map from strings to longs (and possibly vice versa).String maps represent mappings from strings (actually, any subclass of
CharSequence
) to numbers; they can support reverse mapping, too. The latter has usually sense only if the map is minimal and perfect (e.g., a bijection of a set of string with an initial segment of the natural numbers of the same size). String maps are useful for terms of an MG4J inverted index, URLs of a WebGraph-compressed web snapshot, and so on.- Since:
- 2.0
- Author:
- Sebastiano Vigna
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Field Summary
Fields Modifier and Type Field Description static long
serialVersionUID
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Method Summary
All Methods Instance Methods Abstract Methods Default Methods Deprecated Methods Modifier and Type Method Description it.unimi.dsi.fastutil.objects.ObjectBigList<? extends S>
list()
Returns a list view of the domain of this string map (optional operation).default int
size()
Deprecated.Please usesize64()
instead.default long
size64()
Returns the intended number of keys in this function, or -1 if no such number exists.-
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
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Field Detail
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serialVersionUID
static final long serialVersionUID
- See Also:
- Constant Field Values
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Method Detail
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list
it.unimi.dsi.fastutil.objects.ObjectBigList<? extends S> list()
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.
- Returns:
- a list view of the domain of this string map, or
null
if this map does not support this operation.
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size64
default long size64()
Returns the intended number of keys in this function, or -1 if no such number exists.Most function implementations will have some knowledge of the intended number of keys in their domain. In some cases, however, this might not be possible. This default implementation, in particular, returns -1.
- Specified by:
size64
in interfaceit.unimi.dsi.fastutil.Size64
- Returns:
- the intended number of keys in this function, or -1 if that number is not available.
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size
@Deprecated default int size()
Deprecated.Please usesize64()
instead.- Specified by:
size
in interfaceit.unimi.dsi.fastutil.Function<java.lang.CharSequence,java.lang.Long>
- Specified by:
size
in interfaceit.unimi.dsi.fastutil.Size64
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