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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 an value representing releases of this packaged version. So, 1.3.7.1 is the first release of the mavenized version of HermiT based on the 1.3.7 release of HermiT. 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 2005 Arnaud Bailly - NORSYS/LIFL
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * (1) Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 * (2) Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *
 * (3) The name of the author may not be used to endorse or promote
 *     products derived from this software without specific prior
 *     written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Created on 1 avr. 2005
 *
 */
package rationals;

import java.util.Collection;
import java.util.List;
import java.util.Set;

/**
 * An interface for defining various synchronization schemes.
 * This interface is used in {@see rationals.transformations.Synchronize} for
 * and allows various strategies of synchronization between transitions
 * of two automata.
 * 
 * @author nono
 * @version $Id: Synchronization.java 2 2006-08-24 14:41:48Z oqube $
 */
public interface Synchronization {

    /**
     * Synchronize two transitions.
     * This method should return a letter denoting the result of synchronizing 
     * the two transitions' labels. If the result is null, then no synchronization
     * occurs.
     * 
     * @param t1 first label to synchronize
     * @param t2 second label to synchronize
     * @return a non null Object if the two transitions can be synchronized.
     */
    Object synchronize(Object t1, Object t2);
    
    /**
     * Compute the synchronizable letters from two alphabets.
     * This method returns the set of letters from a and b that can be synchronized.
     * In the default case, this method simply computes the intersection of the two
     * sets.
     * 
     * @param a an alphabet 
     * @param b another alphabet
     * @return a new Set of letters (may be empty) from a and b that can be synchronized.
     */
    Set synchronizable(Set a,Set b);

    /**
     * Construct the synchronization alphabet from a collection of
     * alphabets.
     * 
     * @param alphl
     * @return a Set implementation containing all letters of all alphabets 
     * in alphl that could be synchronized.
     */
    Set synchronizable(Collection alphl);

    /**
     * Checks whether or not the given letter is synchronizable in the
     * given automaton's alphabet.
     * This method checks in a synchronization dependant way that the 
     * given letter pertains to the synchronization set.
     *  
     * @param object the letter to check
     * @param alph the alphabet
     * @return true if object is synchronizable with some letter in alph, 
     * false otherwise.
     */
    boolean synchronizeWith(Object object, Set alph);
    
}