Examples of org.apache.derby.iapi.services.info.ProductVersionHolder

Package org.apache.derby.iapi.services.info

Examples of org.apache.derby.iapi.services.info.ProductVersionHolder

org.apache.derby.iapi.services.info.ProductVersionHolder
Class to hold a Derby Product version. This class includes the following product version features.
1. Save the product version information this holds as a String. We call the string a 'product version string'.
2. Construct a ProductVersionHolder from a valid 'product version string'.
3. Determine if two product versions are feature compatible. This means products of these versions may interoperate with ***NO*** compatibility problems.
4. Determine if two product versions are the same. This is a stronger test than the test for feature compatibility.
Cloudscape 5.1 and older versions used the majorVersion, minorVersion, maintVersion versions directly. That is a three part version number, majorVersion.minorVersion.maintVersion, e.g. 5.1.21. For Cloudscape 5.2 onwards a four part name is required. majorVersion.minorVersion.fixPack.bugVersion e.g. 5.2.1.2 This follows the IBM standard and allows us to state that a fix pack will be 5.2.3 without worrying about how many maintence fixes there are between fix packs. We implement this using the existing format of ProductVersionHolder to reduce disruption to the code, however we make the maintVersion encode the {fixPack.bugVersion}. Since the maintVersion is represented by a int (2G values) we have plenty of room for encoding. If we assign a given majorVersion.minorVersion.fixPack a 10 year life, then we about the maximum number of individual releases it can have is 10 years * 365 days/year = 3650. Thus with the pre 5.2 scheme we would not expect a 5.1.x to have an x > 3650 (approximately). Usually the rate of point releases has been much less than one per day, 5.1.31 is released about 225 days after GA which makes around a point release every 7 days. But in the encoding we need to be conservative. With fix packs the maximum is about 2 per year and fix packs are only made to the current release, thus with a yearly minor release cycle we would imagine only 2 fixpacks per major.minor. However like other IBM products or release cycle may be extended thus we can expect up to a handful of fix packs. Thus we might imagine releases like 5.2.0.12 5.2.0.234 5.2.1.34 5.2.4.2445 but highly unlikey to have 5.2.2.59321 5.2.23.1 The encoding number must continue to increase so that the encodedMaintB > encodedMaintA if (fixPackB > fixPackA) || ((fixPackB == fixPackA) && (bugB > bugA)) Selected encoding encodedMaint = (fixPack * 1,000,000) + (bugVersion); Handles many many fixpacks and upto one million bug fixes per fix pack and remains somewhat human readable. Special fix packs fixpack == 0 = alpha (version off main codeline) fixpack == 1 = first release of major.minor (may be marked with beta) fixpack == 2 = first fix pack (displayed as 1) The drdaMaintVersion is sent in the Network Server PRDID. It never displays but may be used by the client for version specific behaviour. It should be reset to 0 with each minor release. The product version string has the form:
```
 productVendorName - ProductName - majorVersion.minorVersion.maintVersion [beta] - (buildNumber) 
```




    // Create ProductVersionHolder in security block for Java 2 security.
    private static ProductVersionHolder buildProductVersionHolder() throws
            java.security.PrivilegedActionException, IOException {
        ProductVersionHolder myPVH = null;
        myPVH = AccessController.doPrivileged(
                new PrivilegedExceptionAction<ProductVersionHolder>() {


                    public ProductVersionHolder run() throws IOException {
                        InputStream versionStream = getClass().getResourceAsStream(ProductGenusNames.DNC_INFO);

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     * What's the version of this database product?
     *
     * @return database version
     */
  public String getDatabaseProductVersion() {
    ProductVersionHolder myPVH = Monitor.getMonitor().getEngineVersion();


    return myPVH.getVersionBuildString(false);
  }

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    *
    * @return the underlying database's major version
  */
  public int getDatabaseMajorVersion()
  {
    ProductVersionHolder pvh = Monitor.getMonitor().getEngineVersion();
    if (pvh == null)
    {
      return -1;
    }
    return pvh.getMajorVersion();
  }

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    *
    * @return the underlying database's minor version
  */
  public int getDatabaseMinorVersion()
  {
    ProductVersionHolder pvh = Monitor.getMonitor().getEngineVersion();
    if (pvh == null)
    {
      return -1;
    }
    return pvh.getMinorVersion();
  }

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    boolean fullUpgrade = Boolean.valueOf(startParams.getProperty(org.apache.derby.iapi.reference.Attribute.UPGRADE_ATTR)).booleanValue();


    if (true || !fullUpgrade) {


      ProductVersionHolder engineVersion = Monitor.getMonitor().getEngineVersion();


      if (engineVersion.isBeta() || engineVersion.isAlpha()) {
        // soft upgrade not supported for beta.
        throw StandardException.newException(SQLState.NO_UPGRADE, oldVersionInfo, engineVersion.getSimpleVersionString());
      }


      // Gandalf release does not support any soft or hard upgrade,
      // remove this exception when upgrade support is added, and
      // add back in the following code which has been commented out

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    m = c.getMethod("getMajorVersion", null);
    major = (Integer)m.invoke(o,null);
    m = c.getMethod("getMinorVersion", null);
    minor = (Integer)m.invoke(o,null);


    ProductVersionHolder jccVersion = ProductVersionHolder.getProductVersionHolder(
      "IBM Corp.",
      "DB2 Java Common Client",
      "DRDA:jcc",
      major.intValue(),
      minor.intValue(),

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      // figure out which version this is
      InputStream versionStream = (InputStream) java.security.AccessController.doPrivileged(this);


      // figure out which version this is
      ProductVersionHolder ijVersion = 
        ProductVersionHolder.getProductVersionHolderFromMyEnv(versionStream);


      String version;
      if (ijVersion != null)
      {
        version = "" + ijVersion.getMajorVersion() + "." +
          ijVersion.getMinorVersion();
      }
      else
      {
        version = "?";
      }

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    langUtil = new LocalizedResource(null,null,DRDA_PROP_MESSAGES);


    serverInstance = this;
    
    //set Server attributes to be used in EXCSAT
    ProductVersionHolder myPVH = getNetProductVersionHolder();
    att_extnam = ATT_SRVNAM + " " + java.lang.Thread.currentThread().getName();
    
    att_srvclsnm = myPVH.getProductName();


    String majorStr = String.valueOf(myPVH.getMajorVersion());
    String minorStr = String.valueOf(myPVH.getMinorVersion());
    // Maintenance version. Server protocol version.
    // Only changed if client needs to recognize a new server version.
    String drdaMaintStr = String.valueOf(myPVH.getDrdaMaintVersion());


    // PRDID format as JCC expects it: CSSMMmx
    // MM = major version
    // mm = minor version
    // x = drda MaintenanceVersion


    prdId = "CSS";
    if (majorStr.length() == 1)
      prdId += "0";
    prdId += majorStr;


    if (minorStr.length() == 1)
      prdId += "0";


    prdId += minorStr;
    
    prdId += drdaMaintStr;
    att_srvrlslv = prdId + "/" + myPVH.getVersionBuildString(false);
    
    if (SanityManager.DEBUG)
    {
      if (majorStr.length() > 2  || 
        minorStr.length() > 2 || 
        drdaMaintStr.length() > 1)
        SanityManager.THROWASSERT("version values out of expected range  for PRDID");
    }


    buildNumber = myPVH.getBuildNumber();
  }

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   * and won't be readily available to ProductVersionHolder when running
   * under security manager.
   */
  private ProductVersionHolder getNetProductVersionHolder() throws Exception
  {
    ProductVersionHolder myPVH= null;
    try {
      myPVH = (ProductVersionHolder) AccessController.doPrivileged(
                new PrivilegedExceptionAction() {
                    
                  public Object run() throws UnknownHostException,IOException

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   */
  private int getJBMSMinorVersionNumber() 
  {
    ProductVersionHolder jbmsVersion = Monitor.getMonitor().getEngineVersion();


    return jbmsVersion.getMinorVersion()*100 +jbmsVersion.getMaintVersion() + (jbmsVersion.isBeta() ? 0 : 1) + 2;
  }

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