fr.lirmm.graphik.graal.api.forward_chaining.RuleApplicationHandler Maven / Gradle / Ivy

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This module provides all interfaces of Graal.

There is a newer version: 1.2.0

/*
 * Copyright (C) Inria Sophia Antipolis - Méditerranée / LIRMM
 * (Université de Montpellier & CNRS) (2014 - 2015)
 *
 * Contributors :
 *
 * Clément SIPIETER 
 * Mélanie KÖNIG
 * Swan ROCHER
 * Jean-François BAGET
 * Michel LECLÈRE
 * Marie-Laure MUGNIER 
 *
 *
 * This file is part of Graal .
 *
 * This software is governed by the CeCILL  license under French law and
 * abiding by the rules of distribution of free software.  You can  use,
 * modify and/ or redistribute the software under the terms of the CeCILL
 * license as circulated by CEA, CNRS and INRIA at the following URL
 * "http://www.cecill.info".
 *
 * As a counterpart to the access to the source code and  rights to copy,
 * modify and redistribute granted by the license, users are provided only
 * with a limited warranty  and the software's author,  the holder of the
 * economic rights,  and the successive licensors  have only  limited
 * liability.
 *
 * In this respect, the user's attention is drawn to the risks associated
 * with loading,  using,  modifying and/or developing or reproducing the
 * software by the user in light of its specific status of free software,
 * that may mean  that it is complicated to manipulate,  and  that  also
 * therefore means  that it is reserved for developers  and  experienced
 * professionals having in-depth computer knowledge. Users are therefore
 * encouraged to load and test the software's suitability as regards their
 * requirements in conditions enabling the security of their systems and/or
 * data to be ensured and,  more generally, to use and operate it in the
 * same conditions as regards security.
 *
 * The fact that you are presently reading this means that you have had
 * knowledge of the CeCILL license and that you accept its terms.
 */
 package fr.lirmm.graphik.graal.api.forward_chaining;

import fr.lirmm.graphik.graal.api.core.Atom;
import fr.lirmm.graphik.graal.api.core.AtomSet;
import fr.lirmm.graphik.graal.api.core.Rule;
import fr.lirmm.graphik.graal.api.core.Substitution;
import fr.lirmm.graphik.util.stream.GIterator;

public interface RuleApplicationHandler {

	public boolean preRuleApplication(Rule rule, Substitution substitution, AtomSet data);

	public GIterator postRuleApplication(Rule rule, Substitution substitution, AtomSet data, GIterator atomsToAdd);

	public static RuleApplicationHandler DEFAULT = new RuleApplicationHandler() {

		@Override
		public boolean preRuleApplication(Rule rule, Substitution substitution, AtomSet data) {
			return true;
		}

		@Override
		public GIterator postRuleApplication(Rule rule, Substitution substitution, AtomSet data, GIterator atomsToAdd) {
			return atomsToAdd;
		}

	};

};