Compose.java example

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ptii-master
/* Compute the composition of interface automata.

 Copyright (c) 1999-2009 The Regents of the University of California.
 All rights reserved.
 Permission is hereby granted, without written agreement and without
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 software and its documentation for any purpose, provided that the above
 copyright notice and the following two paragraphs appear in all copies
 of this software.

 IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
 FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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 */
package ptolemy.domains.modal.kernel.test;

import java.net.URL;

import ptolemy.actor.gui.ConfigurationApplication;
import ptolemy.domains.modal.kernel.ia.InterfaceAutomaton;
import ptolemy.moml.MoMLParser;

//////////////////////////////////////////////////////////////////////////
//// Compose

/**
 Compute the composition of interface automata.
 This class reads the MoML description of a number of interface automata,
 computes their composition, then writes the MoML description of the
 composition to stdout. The usage is:
 <pre>
 java ptolemy.domains.modal.kernel.test.Compose <automaton1.xml> <automaton2.xml> ...
 </pre>

 @author Yuhong Xiong
 @version $Id$
 @since Ptolemy II 7.1
 @Pt.ProposedRating Red (yuhong)
 @Pt.AcceptedRating Red (reviewmoderator)
 */
public class Compose {
    /** Compose the interface automata in the argument array and write
     *  the MoML description for the composition to stdout.
     *  @param momls An array of MoML file names for InterfaceAutomaton.
     *  @param considerTransient True to indicate to treat transient state
     *   differently.
     *  @exception Exception If the automata cannot be composed.
     */
    public Compose(String[] momls, boolean considerTransient) throws Exception {
        InterfaceAutomaton[] automata = new InterfaceAutomaton[momls.length];

        for (int i = 0; i < momls.length; i++) {
            URL url = ConfigurationApplication.specToURL(momls[i]);

            // following the comments in MoMLApplication, use the same URL for
            // the two arguments (base and URL) to parse(). Also, a instance
            // of MoMLParser must be used to parse each file, otherwise
            // the same automaton will be returned the second time parse() is
            // called.
            MoMLParser parser = new MoMLParser();
            automata[i] = (InterfaceAutomaton) parser.parse(url, url);
            automata[i].addPorts();
        }

        InterfaceAutomaton composition = automata[0];

        for (int i = 1; i < momls.length; i++) {
            composition = composition.compose(automata[i], considerTransient);
        }

        System.out.println(composition.exportMoML());
    }

    /** Pass the command line arguments to the constructor. The command line
     *  argument is a list of MoML files for InterfaceAutomaton.
     *  @param args The command line arguments.
     */
    public static void main(String[] args) {
        try {
            boolean considerTransient = false;
            String[] momls = args;

            if (args[0].equals("-transient")) {
                considerTransient = true;
                momls = new String[args.length - 1];

                for (int i = 1; i < args.length; i++) {
                    momls[i - 1] = args[i];
                }
            }

            new Compose(momls, considerTransient);
        } catch (Exception exception) {
            System.out.println(exception.getMessage());
        }
    }

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}