Package cz.cvut.kbss.jsonld.common

Class EnumUtil

java.lang.Object

cz.cvut.kbss.jsonld.common.EnumUtil

public class EnumUtil
extends Object

Utilities for mapping enum constants.

Constructor Summary

Constructors

Constructor	Description
EnumUtil()

Method Summary

Modifier and Type	Method	Description
static <T, E extends Enum<?>> Optional<T>	findMatchingConstant(Class<E> enumType, BiPredicate<E,String> filter, BiFunction<E,String,T> mapper)	Finds an enum constant matching the specified filtering predicate and transforms it using the specified mapper.
static String	resolveMappedIndividual(Enum<?> value)	Resolves an individual mapped by the specified enum constant.

Methods inherited from class java.lang.Object

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

Constructor Details

EnumUtil

public EnumUtil()

Method Details

resolveMappedIndividual

public static String resolveMappedIndividual(Enum<?> value)

Resolves an individual mapped by the specified enum constant.

This method looks for the value of the Individual annotation.

Parameters:

value - Value to map to individual

Returns:

Matching individual identifier

Throws:

InvalidEnumMappingException - When no matching individual is found

findMatchingConstant

public static <T,
E extends Enum<?>> Optional<T> findMatchingConstant(Class<E> enumType,
 BiPredicate<E,String> filter,
 BiFunction<E,String,T> mapper)

Finds an enum constant matching the specified filtering predicate and transforms it using the specified mapper.

Note that the enum constants are also filtered so that only those annotated with Individual are accepted.

Type Parameters:

T - Target type

E - Enum type

Parameters:

enumType - Enum class

filter - BiFilter to apply to the processed enum constants and their individual IRIs

mapper - BiFunction mapping enum constant and its individual IRI to the required target type

Returns:

Matching enum constant transformed according to the specified mapper. Empty Optional if no constant of the specified enum type matches the filter predicate