Source Code : Version

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Version

        
/*
 * Version.java
 *
 *  Version object for maintaining an application version. Used for version checking over the internet.
 *
 *   @author Guy Wittig
 *   @version 18-Jun-2006
 *
 *   This program is part of MV-Plan
 *   Copywrite 2006 Guy Wittig
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program 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 General Public License for more details.
 *
 *   The GNU General Public License can be read at http://www.gnu.org/licenses/licenses.html
 */

//package mvplan.util;

import java.util.HashMap;

public class Version implements Comparable<Version> {

  private int majorVersion;
  private int minorVersion;
  private int patchVersion;
  private String statusString;
  private String dateString;
  private HashMap lookupTable;

  public static final int UNDEFINED = 0;
  public static final int TEST = 10;
  public static final int ALPHA = 20;
  public static final int BETA = 30;
  public static final int RELEASED = 100;

  /** Creates a new instance of Version */
  public Version() {
    this(0, 0, 0, "UNDEFINED", "");
  }

  public Version(int major, int minor, int patch, String status, String date) {
    // Create hashmap
    lookupTable = new HashMap();
    lookupTable.put("UNDEFINED", new Integer(0));
    lookupTable.put("TEST", new Integer(1));
    lookupTable.put("ALPHA", new Integer(2));
    lookupTable.put("BETA", new Integer(3));
    lookupTable.put("RELEASED", new Integer(4));
    // Initialise fields
    majorVersion = major;
    minorVersion = minor;
    patchVersion = patch;
    setStatus(status);
    dateString = date;
  }

  public String toString() {
    String s = majorVersion + "." + minorVersion;
    if (patchVersion > 0)
      s = s + "." + patchVersion;
    if (!statusString.equals("RELEASED"))
      s = s + " " + statusString;
    // if(dateString.length()>0) s=s+" "+dateString;
    return s;
  }

  // * Compares two status strings based on their status numbers in the
  // hashtable */
  private int compareStatus(String s1, String s2) {
    Integer n1 = (Integer) lookupTable.get(s1);
    Integer n2 = (Integer) lookupTable.get(s2);
    if (n1 == null || n2 == null)
      return -1;
    return n1 - n2;
  }

  public int compareTo(Version v) {
    if (v.getMajorVersion() == majorVersion)
      if (v.getMinorVersion() == minorVersion)
        if (compareStatus(v.getStatus(), statusString) == 0)
          // if(v.getPatchVersion()==patchVersion)
          return v.getPatchVersion() - patchVersion;
        // return compareStatus(v.getStatus(),statusString);
        else
          return compareStatus(v.getStatus(), statusString);
      // else return v.getPatchVersion()-patchVersion;
      else
        return v.getMinorVersion() - minorVersion;
    else
      return v.getMajorVersion() - majorVersion;
  }

  public int getMajorVersion() {
    return majorVersion;
  }

  public void setMajorVersion(int majorVersion) {
    this.majorVersion = (majorVersion >= 0) ? majorVersion : 0;
  }

  public int getMinorVersion() {
    return minorVersion;
  }

  public void setMinorVersion(int minorVersion) {
    this.minorVersion = (minorVersion >= 0) ? minorVersion : 0;
  }

  public int getPatchVersion() {
    return patchVersion;
  }

  public void setPatchVersion(int patchVersion) {
    this.patchVersion = (patchVersion >= 0) ? patchVersion : 0;
  }

  public Object[] getLookupTable() {
    return lookupTable.keySet().toArray();
  }

  public String getStatus() {
    return statusString;
  }

  public void setStatus(String status) {
    if (lookupTable.get(status.toUpperCase()) != null)
      statusString = status.toUpperCase();
    else
      statusString = "UNKNOWN";
  }

  public String getDateString() {
    return dateString;
  }

  public void setDateString(String dateString) {
    this.dateString = dateString;
  }

}

   
    
    
    
    
    
    
    
  

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