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HermiT is reasoner for ontologies written using the Web Ontology Language (OWL). Given an OWL file, HermiT can determine whether or not the ontology is consistent, identify subsumption relationships between classes, and much more. This is the maven build of HermiT and is designed for people who wish to use HermiT from within the OWL API. It is now versioned in the main HermiT version repository, although not officially supported by the HermiT developers. The version number of this package is a composite of the HermiT version and a value representing the OWLAPI release it is compatible with. Note that the group id for the upstream HermiT is com.hermit-reasoner, while this fork is released under net.sourceforge.owlapi. This fork exists to allow HermiT users to use newer OWLAPI versions than the ones supported by the original HermiT codebase. This package includes the Jautomata library (http://jautomata.sourceforge.net/), and builds with it directly. This library appears to be no longer under active development, and so a "fork" seems appropriate. No development is intended or anticipated on this code base.

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/* Copyright 2008, 2009, 2010 by the Oxford University Computing Laboratory

   This file is part of HermiT.

   HermiT 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 3 of the License, or
   (at your option) any later version.

   HermiT 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 HermiT.  If not, see .
*/
package org.semanticweb.HermiT.model;

import org.semanticweb.HermiT.Prefixes;
import org.semanticweb.HermiT.datatypes.DatatypeRegistry;
import org.semanticweb.HermiT.datatypes.MalformedLiteralException;

/**
 * Represents a constants.
 */
public class Constant extends Term {
    private static final long serialVersionUID=-8143911431654640690L;

    protected final String m_lexicalForm;
    protected final String m_datatypeURI;
    protected final Object m_dataValue;

    protected Constant(String lexicalForm,String datatypeURI,Object dataValue) {
        m_lexicalForm=lexicalForm;
        m_datatypeURI=datatypeURI;
        m_dataValue=dataValue;
    }
    /**
     * @return lexical form
     */
    public String getLexicalForm() {
        return m_lexicalForm;
    }
    /**
     * @return datatype iri
     */
    public String getDatatypeURI() {
        return m_datatypeURI;
    }
    /**
     * @return data value
     */
    public Object getDataValue() {
        return m_dataValue;
    }
    /**
     * @return true if anonymous
     */
    public boolean isAnonymous() {
        return "internal:anonymous-constants".equals(m_datatypeURI);
    }
    @Override
    public String toString() {
        return toString(Prefixes.STANDARD_PREFIXES);
    }
    @Override
    public String toString(Prefixes prefixes) {
        StringBuilder buffer=new StringBuilder();
        buffer.append('"');
        for (int index=0;index s_interningManager=new InterningManager() {
        @Override
        protected boolean equal(Constant object1,Constant object2) {
            return object1.m_lexicalForm.equals(object2.m_lexicalForm) && object1.m_datatypeURI.equals(object2.m_datatypeURI);
        }
        @Override
        protected int getHashCode(Constant object) {
            return object.m_lexicalForm.hashCode()+object.m_datatypeURI.hashCode();
        }
    };

    /**
     * @param lexicalForm lexicalForm
     * @param datatypeURI datatypeURI
     * @return constant
     * @throws MalformedLiteralException if literal is malformed
     */
    public static Constant create(String lexicalForm,String datatypeURI) throws MalformedLiteralException {
        Object dataValue=DatatypeRegistry.parseLiteral(lexicalForm,datatypeURI);
        return s_interningManager.intern(new Constant(lexicalForm,datatypeURI,dataValue));
    }
    /**
     * @param id id
     * @return anonymous constant
     */
    public static Constant createAnonymous(String id) {
        return create(id,"internal:anonymous-constants");
    }
}