fr.lirmm.graphik.graal.core.term.DefaultLiteral.java Source code

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Here is the source code for fr.lirmm.graphik.graal.core.term.DefaultLiteral.java

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/*
 * Copyright (C) Inria Sophia Antipolis - Mditerrane / LIRMM
 * (Universit de Montpellier & CNRS) (2014 - 2015)
 *
 * Contributors :
 *
 * Clment SIPIETER <clement.sipieter@inria.fr>
 * Mlanie KNIG
 * Swan ROCHER
 * Jean-Franois BAGET
 * Michel LECLRE
 * Marie-Laure MUGNIER <mugnier@lirmm.fr>
 *
 *
 * This file is part of Graal <https://graphik-team.github.io/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.core.term;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.lang3.StringUtils;

import fr.lirmm.graphik.graal.api.core.AbstractTerm;
import fr.lirmm.graphik.graal.api.core.Literal;
import fr.lirmm.graphik.graal.api.core.Term;
import fr.lirmm.graphik.util.URI;
import fr.lirmm.graphik.util.URIUtils;

/**
 * Not immutable but it is not possible with an Object as constructor parameter
 * 
 * @author Clment Sipieter (INRIA) {@literal <clement@6pi.fr>}
 *
 */
final class DefaultLiteral extends AbstractTerm implements Literal {

    private static final long serialVersionUID = -8168240181900479256L;
    private static Pattern pattern = Pattern.compile("\"(.*)\"\\^\\^<(.*)>");

    private final Object value;
    private final URI datatype;
    private final String identifier;

    // /////////////////////////////////////////////////////////////////////////
    // CONSTRUCTORS
    // /////////////////////////////////////////////////////////////////////////

    public DefaultLiteral(Literal lit) {
        this(lit.getDatatype(), lit.getValue());
    }

    public DefaultLiteral(Object value) {
        boolean test = false;
        Matcher m = null;
        if (value instanceof String) {
            m = pattern.matcher((String) value);
            test = m.matches();
        }
        if (test) {
            this.datatype = URIUtils.createURI(m.group(2));
            this.value = m.group(1);
        } else {
            this.datatype = URIUtils
                    .createURI("java:" + StringUtils.reverseDelimited(value.getClass().getCanonicalName(), '.'));
            this.value = value;
        }
        this.identifier = "\"" + this.value.toString() + "\"^^<" + this.getDatatype().toString() + ">";
    }

    public DefaultLiteral(URI datatype, Object value) {
        this.datatype = datatype;
        this.value = value;
        this.identifier = "\"" + this.value.toString() + "\"^^<" + this.getDatatype().toString() + ">";
    }

    // /////////////////////////////////////////////////////////////////////////
    // PUBLIC METHODS
    // /////////////////////////////////////////////////////////////////////////

    @Override
    public boolean isConstant() {
        return true;
    }

    @Override
    public Term.Type getType() {
        return Term.Type.LITERAL;
    }

    @Override
    public Object getValue() {
        return this.value;
    }

    @Override
    public String getLabel() {
        return this.value.toString();
    }

    @Override
    public URI getDatatype() {
        return this.datatype;
    }

    @Override
    public String getIdentifier() {
        return this.identifier;
    }

    // /////////////////////////////////////////////////////////////////////////
    // OBJECT OVERRIDE METHODS
    // /////////////////////////////////////////////////////////////////////////

}