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/*-
 * #%L
 * Coffee
 * %%
 * Copyright (C) 2020 i-Cell Mobilsoft Zrt.
 * %%
 * 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.
 * #L%
 */
package hu.icellmobilsoft.coffee.module.ruleng.rule;

import java.util.Collections;
import java.util.List;

import hu.icellmobilsoft.coffee.se.api.exception.BaseException;

/**
 * General rule interface
 *
 * @author imre.scheffer
 * @param 
 *           The class type of the input object on which the rule can be applied.
 * @param 
 *            The class type of the evaluation result.
 * @since 1.0.0
 */
public interface IRule {

    /**
     * Rule evaluation
     *
     * @param input
     *            object to be evaluated
     * @return evaluation result
     * @throws RuleException
     *             error violating the rule evaluation
     * @throws BaseException
     *            General, unexpected error during evaluation
     */
    RULERESULT apply(INPUT input) throws RuleException, BaseException;

    /**
     * Evaluation with multiple results
     *
     * @param input
     *            object to be evaluated
     * @return evaluation result
     * @throws RuleException
     *             error violating the rule evaluation
     * @throws BaseException
     *             General, unexpected error during evaluation
     */
    default List applyList(INPUT input) throws RuleException, BaseException {
        return Collections.emptyList();
    }
}




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