Source Code Cross Referenced for FormsVersion2.java in  » Swing-Library » abeille-forms-designer » com » jeta » forms » store » memento » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Swing Library » abeille forms designer » com.jeta.forms.store.memento 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright (c) 2004 JETA Software, Inc.  All rights reserved.
003:         * 
004:         * Redistribution and use in source and binary forms, with or without modification, 
005:         * are permitted provided that the following conditions are met:
006:         *
007:         *  o Redistributions of source code must retain the above copyright notice, 
008:         *    this list of conditions and the following disclaimer.
009:         *
010:         *  o Redistributions in binary form must reproduce the above copyright notice, 
011:         *    this list of conditions and the following disclaimer in the documentation 
012:         *    and/or other materials provided with the distribution.
013:         *
014:         *  o Neither the name of JETA Software nor the names of its contributors may 
015:         *    be used to endorse or promote products derived from this software without 
016:         *    specific prior written permission.
017:         *
018:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
019:         * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
020:         * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
021:         * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
022:         * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
023:         * INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
024:         * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
025:         * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
026:         * INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
027:         * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
028:         */
029:
030:        package com.jeta.forms.store.memento;
031:
032:        import java.io.IOException;
033:
034:        import com.jeta.forms.store.AbstractJETAPersistable;
035:        import com.jeta.forms.store.JETAObjectInput;
036:        import com.jeta.forms.store.JETAObjectOutput;
037:
038:        /**
039:         * This class is used to provide a version stamp to a forms file. This is not
040:         * the version of the forms designer product. Rather, this allows the runtime to
041:         * check the form file version. If this is an older runtime that is trying to
042:         * load a file stored with a more recent, incompatible runtime, an error message
043:         * can be displayed to the user. Incompatible changes should be marked by an
044:         * increase in the major version number. Changes to the minor and sub versions
045:         * should be reserved for bug fixes or changes that can be loaded and safely
046:         * ignored by older runtimes.
047:         * 
048:         * @deprecated. Use FormsVersion2
049:         * @author Jeff Tassin
050:         */
051:        public class FormsVersion2 extends AbstractJETAPersistable implements 
052:                Comparable {
053:
054:            static final long serialVersionUID = -1159397996359121427L;
055:
056:            /**
057:             * The version of this class.
058:             */
059:            public static final int VERSION = 1;
060:
061:            /**
062:             * The version of the forms runtime file. Update these values when the forms
063:             * runtime is changed.
064:             */
065:            private int m_major = 2;
066:
067:            private int m_minor = 0;
068:
069:            private int m_sub = 0;
070:
071:            /**
072:             * Comparable implementation
073:             */
074:            public int compareTo(Object o) {
075:                if (o instanceof  FormsVersion2) {
076:                    FormsVersion2 version = (FormsVersion2) o;
077:                    if (m_major > version.m_major)
078:                        return 1;
079:                    else if (m_major < version.m_major)
080:                        return -1;
081:                    else {
082:                        /** major versions are the same, check minor */
083:                        if (m_minor > version.m_minor)
084:                            return 1;
085:                        else if (m_minor < version.m_minor)
086:                            return -1;
087:                        else {
088:                            /** major and minor versions are the same, check sub */
089:                            if (m_sub > version.m_sub)
090:                                return 1;
091:                            else if (m_sub < version.m_sub)
092:                                return -1;
093:                            else
094:                                return 0; // versions are equal
095:                        }
096:                    }
097:                } else {
098:                    return -1;
099:                }
100:
101:            }
102:
103:            /**
104:             * Externalizable Implementation
105:             */
106:            public void read(JETAObjectInput in) throws ClassNotFoundException,
107:                    IOException {
108:                int classversion = in.readVersion();
109:                m_major = in.readInt("major");
110:                m_minor = in.readInt("minor");
111:                m_sub = in.readInt("sub");
112:            }
113:
114:            /**
115:             * Externalizable Implementation
116:             */
117:            public void write(JETAObjectOutput out) throws IOException {
118:                out.writeVersion(VERSION);
119:                out.writeInt("major", m_major);
120:                out.writeInt("minor", m_minor);
121:                out.writeInt("sub", m_sub);
122:            }
123:
124:            public String toString() {
125:                return m_major + "." + m_minor + "." + m_sub;
126:            }
127:        }
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