001/* Demonstrate using Serializable classes
002
003 Copyright (c) 1998-2014 The Regents of the University of California.
004 All rights reserved.
005 Permission is hereby granted, without written agreement and without
006 license or royalty fees, to use, copy, modify, and distribute this
007 software and its documentation for any purpose, provided that the above
008 copyright notice and the following two paragraphs appear in all copies
009 of this software.
010
011 IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
012 FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
013 ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
014 THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
015 SUCH DAMAGE.
016
017 THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
018 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
019 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
020 PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
021 CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
022 ENHANCEMENTS, OR MODIFICATIONS.
023
024 PT_COPYRIGHT_VERSION_2
025 COPYRIGHTENDKEY
026 */
027package ptolemy.kernel.test;
028
029import java.io.FileInputStream;
030import java.io.FileOutputStream;
031import java.io.IOException;
032import java.io.ObjectInputStream;
033import java.io.ObjectOutput;
034import java.io.ObjectOutputStream;
035
036import ptolemy.kernel.util.IllegalActionException;
037import ptolemy.kernel.util.NameDuplicationException;
038
039///////////////////////////////////////////////////////////////////
040//// TestSerializable
041
042/**
043 This class constructs a system from the Ptolemy II design document, Figure 8,
044 saves it to a file and then reloads it.
045 @author Christopher Hylands
046 @version $Id$
047 @since Ptolemy II 0.2
048 @Pt.ProposedRating Red
049 @Pt.AcceptedRating Red
050 */
051public class TestSerializable {
052    ///////////////////////////////////////////////////////////////////
053    ////                         public methods                    ////
054
055    /** Create an Example System, then print it out.
056     * @exception NameDuplicationException if the example system cannot
057     * be built because of a duplicate name
058     * @exception IllegalActionException if the example system cannot
059     * be built.
060     */
061    public static void main(String[] args)
062            throws NameDuplicationException, IllegalActionException {
063        ExampleSystem exampleSystem = new ExampleSystem();
064        String filename = "TestSerializable.data";
065
066        if (args.length > 0 && args[0].equals("write")) {
067            FileOutputStream f = null;
068            ObjectOutput s = null;
069
070            try {
071                // Write the system out.
072                f = new FileOutputStream(filename);
073                s = new ObjectOutputStream(f);
074                s.writeObject(exampleSystem);
075            } catch (IOException e) {
076                System.err.println("Exception while writing: " + e);
077                e.printStackTrace();
078            } finally {
079                if (f != null) {
080                    try {
081                        f.close();
082                    } catch (Throwable throwable) {
083                        System.out.println("Ignoring failure to close stream "
084                                + "on '" + filename + "'");
085                        throwable.printStackTrace();
086                    }
087                }
088
089                if (s != null) {
090                    try {
091                        s.close();
092                    } catch (Throwable throwable) {
093                        System.out.println("Ignoring failure to close stream "
094                                + "on '" + filename + "'");
095                        throwable.printStackTrace();
096                    }
097                }
098            }
099
100            System.out.println("Wrote to " + filename);
101        } else {
102            FileInputStream f = null;
103            ObjectInputStream s = null;
104
105            try {
106                // Read the system in
107                f = new FileInputStream(filename);
108                s = new ObjectInputStream(f);
109
110                ExampleSystem newExampleSystem = (ExampleSystem) s.readObject();
111                String newDescription = newExampleSystem.toString();
112                String oldDescription = exampleSystem.toString();
113
114                if (oldDescription.equals(newDescription)) {
115                    System.out.println("OK: Description read in from "
116                            + filename + " is the same as the original\n");
117                } else {
118                    System.out.println("ERROR\nDescription read in from "
119                            + filename + "\n" + newDescription + "\n"
120                            + "is NOT the same as the original:\n"
121                            + oldDescription);
122                    System.exit(1);
123                }
124            } catch (IOException e) {
125                System.err.println("IOException while reading: " + e);
126                e.printStackTrace();
127            } catch (ClassNotFoundException e) {
128                System.err
129                        .println("ClassNotFoundException while reading: " + e);
130            } finally {
131                if (f != null) {
132                    try {
133                        f.close();
134                    } catch (Throwable throwable) {
135                        System.out.println("Ignoring failure to close stream "
136                                + "on '" + filename + "'");
137                        throwable.printStackTrace();
138                    }
139                }
140
141                if (s != null) {
142                    try {
143                        s.close();
144                    } catch (Throwable throwable) {
145                        System.out.println("Ignoring failure to close stream "
146                                + "on '" + filename + "'");
147                        throwable.printStackTrace();
148                    }
149                }
150            }
151        }
152    }
153}