me.lucko.helper.utils

Class Indexing

java.lang.Object

me.lucko.helper.utils.Indexing

public final class Indexing
extends Object

An indexing utility.

Method Summary

Modifier and Type	Method and Description
static <I,R> Map<I,R>	build(Iterable<? extends R> values, Function<? super R,? extends I> indexFunction) Builds an index for the given values, using the indexing function.
static <I,R> Map<I,R>	build(R[] values, Function<? super R,? extends I> indexFunction) Builds an index for the given values, using the indexing function.
static <R extends Enum<?>> Map<String,R>	buildFromEnumName(Class<? extends R> enumClass) Builds an index for the given enum using Enum.name().
static <I,R> Map<I,R>	buildMultiple(Iterable<? extends R> values, Function<? super R,? extends Iterable<? extends I>> indexFunction) Builds an index for the given values, using the indexing function.
static <I,R> Map<I,R>	buildMultiple(R[] values, Function<? super R,? extends Iterable<? extends I>> indexFunction) Builds an index for the given values, using the indexing function.

Methods inherited from class java.lang.Object

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

Method Detail

build

public static <I,R> Map<I,R> build(Iterable<? extends R> values,
                                   Function<? super R,? extends I> indexFunction)

Builds an index for the given values, using the indexing function.

Type Parameters:

I - the index type

R - the actual (value) type

Parameters:

values - the values to index

indexFunction - the index function

Returns:

the index

buildMultiple

public static <I,R> Map<I,R> buildMultiple(Iterable<? extends R> values,
                                           Function<? super R,? extends Iterable<? extends I>> indexFunction)

Builds an index for the given values, using the indexing function.

Type Parameters:

I - the index type

R - the actual (value) type

Parameters:

values - the values to index

indexFunction - the index function

Returns:

the index

build

public static <I,R> Map<I,R> build(R[] values,
                                   Function<? super R,? extends I> indexFunction)

Builds an index for the given values, using the indexing function.

Type Parameters:

I - the index type

R - the actual (value) type

Parameters:

values - the values to index

indexFunction - the index function

Returns:

the index

buildMultiple

public static <I,R> Map<I,R> buildMultiple(R[] values,
                                           Function<? super R,? extends Iterable<? extends I>> indexFunction)

Builds an index for the given values, using the indexing function.

Type Parameters:

I - the index type

R - the actual (value) type

Parameters:

values - the values to index

indexFunction - the index function

Returns:

the index

buildFromEnumName

public static <R extends Enum<?>> Map<String,R> buildFromEnumName(Class<? extends R> enumClass)

Builds an index for the given enum using Enum.name().

Type Parameters:

R - the enum type

Parameters:

enumClass - the enum class

Returns:

the index