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/*
 * Hibernate Search, full-text search for your domain model
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later
 * See the lgpl.txt file in the root directory or .
 */
package org.hibernate.search.engine.cfg.impl;

import java.util.Optional;
import java.util.function.Function;
import java.util.function.Supplier;

import org.hibernate.search.engine.cfg.ConfigurationPropertySource;
import org.hibernate.search.engine.cfg.spi.OptionalConfigurationProperty;

final class OptionalConfigurationPropertyImpl extends AbstractConfigurationProperty>
		implements OptionalConfigurationProperty {

	private final Function converter;

	OptionalConfigurationPropertyImpl(String key, Function converter) {
		super( key );
		this.converter = converter;
	}

	@Override
	public  Optional getAndMap(ConfigurationPropertySource source, Function transform) {
		return getAndTransform( source, optional -> optional.map( transform ) );
	}

	@Override
	public T getOrThrow(ConfigurationPropertySource source, Supplier exceptionSupplier) {
		return getAndTransform( source, optional -> optional.orElseThrow( exceptionSupplier ) );
	}

	@Override
	public  R getAndMapOrThrow(ConfigurationPropertySource source, Function transform,
			Supplier exceptionSupplier) {
		return getAndTransform( source, optional -> optional.map( transform ).orElseThrow( exceptionSupplier ) );
	}

	@Override
	 R convert(Optional rawValue, Function, R> transform) {
		return transform.apply( rawValue.map( converter ) );
	}

}