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/* Copyright (C) 2013-2020 TU Dortmund
 * This file is part of LearnLib, http://www.learnlib.de/.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package de.learnlib.api.oracle;

import java.util.List;

import net.automatalib.automata.concepts.Output;
import net.automatalib.automata.fsa.DFA;
import net.automatalib.automata.transducers.MealyMachine;
import net.automatalib.words.Word;

/**
 * Decides whether some words that do not satisfy properties evaluated by {@link #getPropertyOracles()} on a given
 * hypothesis, are included in a language.
 * If there is such a word not included, it serves as a counter example for the given hypothesis.
 *
 * @author Jeroen Meijer
 *
 * @param  the automaton type
 * @param  the input type
 * @param  the output type
 */
public interface BlackBoxOracle, I, D> extends InclusionOracle {

    /**
     * Returns the property oracles that this black-box oracle uses to evaluate properties.
     *
     * @return the property oracles.
     */
    List> getPropertyOracles();

    interface DFABlackBoxOracle extends BlackBoxOracle, I, Boolean> {}

    interface MealyBlackBoxOracle extends BlackBoxOracle, I, Word> {}
}