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/*
 * This file is part of the OWL API.
 *
 * The contents of this file are subject to the LGPL License, Version 3.0.
 *
 * Copyright (C) 2011, The University of Manchester
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/.
 *
 *
 * Alternatively, the contents of this file may be used under the terms of the Apache License, Version 2.0
 * in which case, the provisions of the Apache License Version 2.0 are applicable instead of those above.
 *
 * Copyright 2011, University of Manchester
 *
 * 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 org.semanticweb.owlapi.reasoner;

import org.semanticweb.owlapi.model.OWLOntology;

/**
 * An OWLReasonerFactory is a point for creating instances of
 * {@link org.semanticweb.owlapi.reasoner.OWLReasoner} objects. A reasoner
 * reasons over a set of ontologies that is defined by an ontology and its
 * imports closure.
 * 
 * @author Matthew Horridge, The University of Manchester, Information
 *         Management Group, Date: 21-Jan-2009
 * @see org.semanticweb.owlapi.reasoner.OWLReasoner
 */
public interface OWLReasonerFactory {

    /**
     * Gets the name of the reasoner created by this factory.
     * 
     * @return A string that represents the name of the reasoner created by this
     *         factory.
     */
    String getReasonerName();

    /**
     * Creates an OWLReasoner that reasons over the imports closure of the
     * specified ontology. The reasoner will obtain the imports closure from the
     * ontology manager associated with {@code ontology}. The reasoner will
     * listen for ontology changes to the ontologies that it is reasoning over
     * and will always answer queries with respect to the changed ontologies
     * (see {@link org.semanticweb.owlapi.reasoner.OWLReasoner} for further
     * details).
     * 
     * @param ontology
     *        The ontology whose imports closure will be reasoned over by the
     *        reasoner that is created.
     * @return The reasoner that reasons over the imports closure of the
     *         specified ontology. Note that calling this method multiple times
     *         with the same manager and ontology will return fresh
     *         instances of OWLReasoner.
     * @throws NullPointerException
     *         if the {@code manager} or {@code ontology} are {@code null}.
     */
    OWLReasoner createNonBufferingReasoner(OWLOntology ontology);

    /**
     * Creates a buffering reasoner that reasons over the imports closure of the
     * specified ontology. The reasoner will obtain the imports closure from the
     * ontology manager associated with {@code ontology}. The reasoner will
     * listen for ontology changes to the ontologies it is reasoning over but
     * will only answer queries with respect to the changed ontologies when the
     * {@link OWLReasoner#flush()} method is called (see
     * {@link org.semanticweb.owlapi.reasoner.OWLReasoner} for further details).
     * 
     * @param ontology
     *        The ontology whose imports closure will be reasoned over by the
     *        reasoner that is created.
     * @return The reasoner that reasons over the imports closure of the
     *         specified ontology. Note that calling this method multiple times
     *         with the same manager and ontology will return fresh
     *         instances of OWLReasoner.
     * @throws NullPointerException
     *         if the {@code manager} or {@code ontology} are {@code null}.
     */
    OWLReasoner createReasoner(OWLOntology ontology);

    /**
     * Creates an OWLReasoner that reasons over the imports closure of the
     * specified ontology. The reasoner will obtain the imports closure from the
     * ontology manager associated with {@code ontology}. The reasoner will
     * listen for ontology changes to the ontologies that it is reasoning over
     * and will always answer queries with respect to the changed ontologies
     * (see {@link org.semanticweb.owlapi.reasoner.OWLReasoner} for further
     * details).
     * 
     * @param ontology
     *        The ontology whose imports closure will be reasoned over by the
     *        reasoner that is created.
     * @param config
     *        A configuration object that can be used to customise the setup of
     *        the reasoner that will be created by calling this method.
     * @return The reasoner that reasons over the imports closure of the
     *         specified ontology. Note that calling this method multiple times
     *         with the same manager and ontology will return fresh
     *         instances of OWLReasoner.
     * @throws IllegalConfigurationException
     *         if the configuration object is inappropriate for reasoners
     *         created by this factory, or if there is an illegal setting on the
     *         configuration.
     * @throws NullPointerException
     *         if any of {@code manager}, {@code ontology} or {@code config} are
     *         {@code null}.
     */
    OWLReasoner createNonBufferingReasoner(OWLOntology ontology,
            OWLReasonerConfiguration config)
            throws IllegalConfigurationException;

    /**
     * Creates a buffering reasoner that reasons over the imports closure of the
     * specified ontology. The reasoner will obtain the imports closure from the
     * ontology manager associated with {@code ontology}. The reasoner will
     * listen for ontology changes to the ontologies it is reasoning over but
     * will only answer queries with respect to the changed ontologies when the
     * {@link OWLReasoner#flush()} method is called (see
     * {@link org.semanticweb.owlapi.reasoner.OWLReasoner} for further details).
     * 
     * @param ontology
     *        The ontology whose imports closure will be reasoned over by the
     *        reasoner that is created.
     * @param config
     *        A configuration object that can be used to customise the setup of
     *        the reasoner that will be created by calling this method.
     * @return The reasoner that reasons over the imports closure of the
     *         specified ontology. Note that calling this method multiple times
     *         with the same manager and ontology will return fresh
     *         instances of OWLReasoner.
     * @throws IllegalConfigurationException
     *         if the configuration object is inappropriate for reasoners
     *         created by this factory, or if there is an illegal setting on the
     *         configuration.
     * @throws NullPointerException
     *         if any of {@code manager}, {@code ontology} or {@code config} are
     *         {@code null}.
     */
    OWLReasoner createReasoner(OWLOntology ontology,
            OWLReasonerConfiguration config)
            throws IllegalConfigurationException;
}