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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.Collection;

import de.learnlib.api.query.OmegaQuery;
import net.automatalib.commons.util.Pair;
import net.automatalib.words.Word;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * An {@link OmegaMembershipOracle} that answers single queries.
 *
 * @author Jeroen Meijer
 *
 * @see OmegaMembershipOracle
 * @see SingleQueryOracle
 */
public interface SingleQueryOmegaOracle extends OmegaMembershipOracle {

    @Override
    default void processQuery(OmegaQuery query) {
        Pair<@Nullable D, Integer> output = answerQuery(query.getPrefix(), query.getLoop(), query.getRepeat());
        query.answer(output.getFirst(), output.getSecond());
    }

    @Override
    default void processQueries(Collection> queries) {
        queries.forEach(this::processQuery);
    }

    interface SingleQueryOmegaOracleDFA extends SingleQueryOmegaOracle, DFAOmegaMembershipOracle {}

    interface SingleQueryOmegaOracleMealy extends SingleQueryOmegaOracle>, MealyOmegaMembershipOracle {}
}