org.coode.oppl.rendering.VariableOWLEntityRenderer Maven / Gradle / Ivy

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/**
 * Copyright (C) 2008, University of Manchester
 *
 * Modifications to the initial code base are copyright of their
 * respective authors, or their employers as appropriate.  Authorship
 * of the modifications may be determined from the ChangeLog placed at
 * the end of this file.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.

 * This library 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
 * Lesser General Public License for more details.

 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
package org.coode.oppl.rendering;

import org.coode.oppl.ConstraintSystem;
import org.coode.oppl.Variable;
import org.coode.oppl.entity.OWLEntityRenderer;
import org.semanticweb.owlapi.model.IRI;
import org.semanticweb.owlapi.model.OWLEntity;

/** @author Luigi Iannone */
public class VariableOWLEntityRenderer implements OWLEntityRenderer {
    private ConstraintSystem constraintSystem;
    private OWLEntityRenderer delegate;

    /** Builds a VariableOWLEntityRenderer from a generic one and a
     * ConstraintSystem instance.
     * 
     * @param constraintSystem
     *            the ConstraintSystem containing all the variables. Cannot be
     *            {@code null}.
     * @param delegate
     *            the OWLEntityRenderer instance for the non-variable entities.
     *            Cannot be {@code null}.
     * @throws NullPointerException
     *             when either of the inputs is {@code null}. */
    public VariableOWLEntityRenderer(ConstraintSystem constraintSystem,
            OWLEntityRenderer delegate) {
        this.constraintSystem = constraintSystem;
        this.delegate = delegate;
    }

    @Override
    public String render(OWLEntity entity) {
        String toReturn = null;
        IRI uri = entity.getIRI();
        Variable variable = constraintSystem.getVariable(uri);
        if (variable != null) {
            toReturn = constraintSystem.render(variable);
        } else {
            toReturn = delegate.render(entity);
        }
        return toReturn;
    }

    /** @return the constraintSystem */
    public ConstraintSystem getConstraintSystem() {
        return constraintSystem;
    }

    /** @param constraintSystem
     *            the constraintSystem to set */
    public void setConstraintSystem(ConstraintSystem constraintSystem) {
        this.constraintSystem = constraintSystem;
    }

    /** @return the delegate */
    public OWLEntityRenderer getDelegate() {
        return delegate;
    }

    /** @param delegate
     *            the delegate to set */
    public void setDelegate(OWLEntityRenderer delegate) {
        this.delegate = delegate;
    }
}