Examples of ucar.nc2.thredds.ThreddsDataFactory

ucar.nc2.thredds.ThreddsDataFactory
This tries to translate a THREDDS InvDataset into a data object that can be used, either as a NetcdfDataset or as a FeatureDataset.
As input, it can take
1. An InvAccess object.
2. An InvDataset object. If the InvDataset has more that one InvAccess, it has to try to choose which to use, based on what Service type we know how to work with.
3. A url of the form [thredds:]catalog.xml#datasetId. In this case it opens the catalog, and looks for the InvDataset with the given datasetId.
4. A url of the form thredds:resolve:resolveURL. In this case it expects that the URL will return a catalog with a single top level dataset, which is the "resolved" dataset.
It annotates the NetcdfDataset with info from the InvDataset.
You can reuse a ThreddsDataFactory, but only within a single thread. @author caron

  protected void open(GridIndex index, CancelTask cancelTask) throws IOException {
    long start = System.currentTimeMillis();
    GridTableLookup lookup = (saveEdition == 2) ? getLookup2() : getLookup1();


    // make it into netcdf objects
    GridIndexToNC convert = new GridIndexToNC(index.filename);
    convert.open(index, lookup, saveEdition, ncfile, fmrcCoordSys, cancelTask);


    ncfile.finish();


    if (debugTiming) {
      long took = System.currentTimeMillis() - start;

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    private ucar.unidata.io.RandomAccessFile myRaf;
    // private Nidsheader.Vinfo myInfo;
    protected UFheader headerParser;


    public boolean isValidFile(ucar.unidata.io.RandomAccessFile raf) {
        UFheader localHeader = new UFheader();
        return (localHeader.isValidFile(raf));
    }

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    public void open(ucar.unidata.io.RandomAccessFile raf, ucar.nc2.NetcdfFile file,
                   ucar.nc2.util.CancelTask cancelTask) throws IOException {
        ncfile = file;
        myRaf = raf;


        headerParser = new UFheader();
        headerParser.read(myRaf, ncfile);
        //myInfo = headerParser.getVarInfo();
        HashMap variables = headerParser.variableGroup;


        Set vSet = variables.keySet();

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   * @param showCoords shoe the values of coordinate axes
   * @param uri        use this for the uri attribute; if null use getLocation().
   * @throws IOException on write error
   */
  public void writeNcMLG(java.io.OutputStream os, boolean showCoords, String uri) throws IOException {
    new NcMLGWriter().writeXML(this, os, showCoords, uri);
  }

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   * @param os  write to this Output Stream.
   * @param uri use this for the uri attribute; if null use getLocation().
   * @throws IOException
   */
  public void writeNcML(java.io.OutputStream os, String uri) throws IOException {
    new NcMLWriter().writeXML(this, os, uri);
  }

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    } else { // pointed to the station file
      stnRaf = raff;
      dataDir = new File(file.getParentFile(), DAT_DIR);
    }


    NcmlConstructor ncmlc = new NcmlConstructor();
    if (!ncmlc.populateFromResource("resources/nj22/iosp/igra-por.ncml", ncfile)) {
      throw new IllegalStateException(ncmlc.getErrlog().toString());
    }
    ncfile.finish();


    //dataVinfo = setVinfo(dataRaf, ncfile, dataPattern, "all_data");
    stnVinfo = setVinfo(stnRaf, ncfile, stnPattern, "station");

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    }
  }


  static private NetcdfFile acquireRemote(FileCache cache, FileFactory factory, Object hashKey,
                                          String location, int buffer_size, ucar.nc2.util.CancelTask cancelTask, Object spiObject) throws IOException {
    if (cache == null) return new CdmRemote(location);


    if (factory == null) factory = new RemoteFactory();
    return (NetcdfFile) cache.acquire(factory, hashKey, location, buffer_size, cancelTask, spiObject);
  }

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    return (NetcdfFile) cache.acquire(factory, hashKey, location, buffer_size, cancelTask, spiObject);
  }


  static private class RemoteFactory implements FileFactory {
    public NetcdfFile open(String location, int buffer_size, ucar.nc2.util.CancelTask cancelTask, Object spiObject) throws IOException {
      return new CdmRemote(location);
    }

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      return acquireRemote(cache, factory, hashKey, location, buffer_size, cancelTask, spiObject);  // open through ncstream


      // thredds:
    } else if (location.startsWith(ThreddsDataFactory.SCHEME)) {
      Formatter log = new Formatter();
      ThreddsDataFactory tdf = new ThreddsDataFactory();
      NetcdfFile ncfile = tdf.openDataset(location, false, cancelTask, log); // LOOK acquire ??
      if (ncfile == null)
        throw new IOException(log.toString());
      return ncfile;


    } else if (location.endsWith(".xml") || location.endsWith(".ncml")) { //open as a NetcdfDataset through NcML

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  @Override
  public void getDataset(InvDataset ds, Object context) {


    if (ds.hasAccess()) {
      ThreddsDataFactory tdataFactory = new ThreddsDataFactory();
      InvAccess access = tdataFactory.chooseDatasetAccess(ds.getAccess());
      MFileRemote mfile = new MFileRemote(access);
      if (mfile.getPath().endsWith(".xml")) return; // eliminate latest.xml  LOOK kludge-o-rama
      java.util.Map<String, MFile> map = (java.util.Map<String, MFile>) context;
      map.put(mfile.getPath(), mfile);
      if (debug) System.out.format("add %s %n", mfile.getPath());

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