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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 2014, 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.
 * 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.profiles;

import static org.semanticweb.owlapi.util.OWLAPIPreconditions.verifyNotNull;

import java.util.Collections;
import java.util.List;
import java.util.Optional;
import javax.annotation.Nullable;
import org.semanticweb.owlapi.model.AddAxiom;
import org.semanticweb.owlapi.model.OWLAxiom;
import org.semanticweb.owlapi.model.OWLDataFactory;
import org.semanticweb.owlapi.model.OWLEntity;
import org.semanticweb.owlapi.model.OWLOntology;
import org.semanticweb.owlapi.model.OWLOntologyChange;
import org.semanticweb.owlapi.model.OWLOntologyID;
import org.semanticweb.owlapi.model.RemoveAxiom;
import org.semanticweb.owlapi.util.CollectionFactory;

/**
 * Describes a violation of an OWLProfile by an axiom. Ultimately, there may be
 * part of the axiom that violates the profile rather than the complete axiom.
 *
 * @author Matthew Horridge, The University of Manchester, Information Management Group
 * @since 4.0.0
 */
public abstract class OWLProfileViolation {

    protected final OWLOntology ontology;
    protected final OWLDataFactory df;
    @Nullable
    protected final OWLAxiom axiom;
    @Nullable
    protected final Object expression;

    /**
     * @param ontology the ontology with the violation
     * @param axiom the axiom with the violation
     * @param o violation expression
     */
    public OWLProfileViolation(OWLOntology ontology, @Nullable OWLAxiom axiom, @Nullable Object o) {
        this.axiom = axiom;
        this.ontology = ontology;
        df = ontology.getOWLOntologyManager().getOWLDataFactory();
        expression = o;
    }

    /**
     * @return ontology id
     */
    public OWLOntologyID getOntologyID() {
        return ontology.getOntologyID();
    }

    /**
     * @return ontology
     */
    public OWLOntology getOntology() {
        return ontology;
    }

    /**
     * @return the expression object of this violation
     */
    public Object getExpression() {
        return verifyNotNull(expression);
    }

    /**
     * @return the offending axiom
     */
    public OWLAxiom getAxiom() {
        return verifyNotNull(axiom);
    }

    /**
     * @return a set of changes to fix the violation - it might be just an axiom removal, or a
     * rewrite, or addition of other needed axioms.
     */
    public List repair() {
        // default fix is to drop the axiom
        if (axiom != null) {
            return list(new RemoveAxiom(ontology, getAxiom()));
        }
        return Collections.emptyList();
    }

    protected AddAxiom addDeclaration(OWLEntity e) {
        return new AddAxiom(ontology, df.getOWLDeclarationAxiom(e));
    }

    /**
     * Visitor accept method.
     *
     * @param visitor visitor
     */
    public abstract void accept(OWLProfileViolationVisitor visitor);

    /**
     * @param visitor visitor
     * @param  visitor return type
     * @return visitor return value
     */
    public abstract  Optional accept(OWLProfileViolationVisitorEx visitor);

    protected String toString(String template) {
        return String.format(template + " [%s in %s]", axiom, ontology.getOntologyID());
    }

    protected String toString(String template, Object object) {
        return String.format(template + " [%s in %s]", object, axiom, ontology.getOntologyID());
    }

    protected String toString(String template, Object object1, Object object2) {
        return String
            .format(template + " [%s in %s]", object1, object2, axiom, ontology.getOntologyID());
    }

    protected List list(OWLOntologyChange... changes) {
        return CollectionFactory.list(changes);
    }
}