Examples of ucar.nc2.iosp.IOServiceProvider

ucar.nc2.iosp.IOServiceProvider
This is the service provider interface for the low-level I/O access classes (read only). This is only used by service implementors. The NetcdfFile class manages all registered IOServiceProvider classes. When NetcdfFile.open() is called:
1. the file is opened as a ucar.unidata.io.RandomAccessFile;
2. the file is handed to the isValidFile() method of each registered IOServiceProvider class (until one returns true, which means it can read the file).
3. the open() method on the resulting IOServiceProvider class is handed the file.

  }


  void compareNC(String fileBinary, String fileText) throws IOException {


    Class c = ucar.nc2.iosp.grib.GribGridServiceProvider.class;
    IOServiceProvider spiB = null;
    try {
      spiB = (IOServiceProvider) c.newInstance();
    } catch (InstantiationException e) {
      throw new IOException("IOServiceProvider " + c.getName() + "must have no-arg constructor.");
    } catch (IllegalAccessException e) {

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  void compareNC(String fileBinary, String fileText) throws IOException {


    long start = System.currentTimeMillis();


    Class c = ucar.nc2.iosp.grib.GribGridServiceProvider.class;
    IOServiceProvider spiB = null;
    try {
      spiB = (IOServiceProvider) c.newInstance();
    } catch (InstantiationException e) {
      throw new IOException("IOServiceProvider " + c.getName() + "must have no-arg constructor.");
    } catch (IllegalAccessException e) {
      throw new IOException("IOServiceProvider " + c.getName() + " IllegalAccessException: " + e.getMessage());
    }
    ucar.unidata.io.RandomAccessFile rafB = new ucar.unidata.io.RandomAccessFile(fileBinary, "r");
    rafB.order(ucar.unidata.io.RandomAccessFile.BIG_ENDIAN);
    NetcdfFile ncfileBinary = new NetcdfFileSPI(spiB, rafB, fileBinary, null);
    //System.out.println( "Time to create Netcdf object using GridGrib Iosp "+
    //  (System.currentTimeMillis() - start) );
    System.out.println("Binary Netcdf created");


    start = System.currentTimeMillis();


    IOServiceProvider spiT = null;
    try {
      spiT = (IOServiceProvider) c.newInstance();
    } catch (InstantiationException e) {
      throw new IOException("IOServiceProvider " + c.getName() + "must have no-arg constructor.");
    } catch (IllegalAccessException e) {

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     * @param args file name
     *
     * @throws IOException  problem reading the file
     */
    public static void main(String[] args) throws IOException {
        IOServiceProvider mciosp = new GempakSoundingIOSP();
        RandomAccessFile  rf     = new RandomAccessFile(args[0], "r", 2048);
        NetcdfFile ncfile = new MakeNetcdfFile(mciosp, rf, args[0], null);
        if (args.length > 1) {
            ucar.nc2.FileWriter.writeToFile(ncfile, args[1]);
        } else {

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     * @param args [0] input file name [0] output file name
     *
     * @throws IOException  problem reading the file
     */
    public static void main(String[] args) throws IOException {
        IOServiceProvider areaiosp = new AreaServiceProvider();
        RandomAccessFile  rf     = new RandomAccessFile(args[0], "r", 2048);
        NetcdfFile ncfile = new MakeNetcdfFile(areaiosp, rf, args[0], null);
        if (args.length > 1) {
            ucar.nc2.FileWriter.writeToFile(ncfile, args[1]);
        }

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     * @param args [0] input file name [0] output file name
     *
     * @throws IOException  problem reading the file
     */
    public static void main(String[] args) throws IOException {
        IOServiceProvider areaiosp = new Vis5DIosp();
        RandomAccessFile  rf       = new RandomAccessFile(args[0], "r", 2048);
        NetcdfFile ncfile = new MakeNetcdfFile(areaiosp, rf, args[0], null);
        System.out.println(ncfile);
        if (args.length > 1) {
            ucar.nc2.FileWriter.writeToFile(ncfile, args[1]);

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    while (ncfile instanceof NetcdfDataset) {
      ncd = (NetcdfDataset) ncfile;
      ncfile = ncd.getReferencedFile();
    }
    if (ncfile == null) return;
    IOServiceProvider iosp = ncfile.getIosp();
    if (iosp == null) return;
    if (!(iosp instanceof GridServiceProvider)) return;
    gribIosp = (GridServiceProvider) iosp;
  }

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     * @param args file name
     *
     * @throws IOException  problem reading the file
     */
    public static void main(String[] args) throws IOException {
        IOServiceProvider mciosp = new GempakSurfaceIOSP();
        RandomAccessFile  rf     = new RandomAccessFile(args[0], "r", 2048);
        NetcdfFile ncfile = new MakeNetcdfFile(mciosp, rf, args[0], null);
        if (args.length > 1) {
            ucar.nc2.FileWriter.writeToFile(ncfile, args[1]);
        } else {

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    void compareNC(String fileBinary, String fileText) throws IOException {


    long start = System.currentTimeMillis() ;
     
    Class c = ucar.nc2.iosp.grib.GribGridServiceProvider.class;
    IOServiceProvider spiB = null;
    try {
      spiB = (IOServiceProvider) c.newInstance();
    } catch (InstantiationException e) {
      throw new IOException("IOServiceProvider " + c.getName() + "must have no-arg constructor.");
    } catch (IllegalAccessException e) {

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   * @throws IllegalAccessException if class is not accessible.
   * @throws InstantiationException if class doesnt have a no-arg constructor.
   * @throws ClassCastException     if class doesnt implement IOServiceProvider interface.
   */
  static public void registerIOProvider(Class iospClass) throws IllegalAccessException, InstantiationException {
    IOServiceProvider spi;
    spi = (IOServiceProvider) iospClass.newInstance(); // fail fast


    if (userLoads) registeredProviders.add(0, spi);  // put user stuff first
    else registeredProviders.add(spi);
  }

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   */
  static public NetcdfFile open(String location, String iospClassName, int bufferSize, CancelTask cancelTask, Object iospMessage)
          throws ClassNotFoundException, IllegalAccessException, InstantiationException, IOException {


    Class iospClass = NetcdfFile.class.getClassLoader().loadClass(iospClassName);
    IOServiceProvider spi = (IOServiceProvider) iospClass.newInstance(); // fail fast


    // send before iosp is opened
    if (iospMessage != null)
      spi.sendIospMessage(iospMessage);


    // get rid of file prefix, if any
    String uriString = location.trim();
    if (uriString.startsWith("file://"))
      uriString = uriString.substring(7);
    else if (uriString.startsWith("file:"))
      uriString = uriString.substring(5);


    // get rid of crappy microsnot \ replace with happy /
    uriString = StringUtil.replace(uriString, '\\', "/");


    if (bufferSize <= 0)
      bufferSize = default_buffersize;
    ucar.unidata.io.RandomAccessFile raf = new ucar.unidata.io.RandomAccessFile(uriString, "r", bufferSize);


    NetcdfFile result = new NetcdfFile(spi, raf, location, cancelTask);


    // send after iosp is opened
    if (iospMessage != null)
      spi.sendIospMessage(iospMessage);


    return result;
  }

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