ucar.unidata.io.RandomAccessFile.acquire()方法的使用及代码示例

x33g5p2x  于2022-01-29 转载在 其他  
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本文整理了Java中ucar.unidata.io.RandomAccessFile.acquire方法的一些代码示例，展示了RandomAccessFile.acquire的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。RandomAccessFile.acquire方法的具体详情如下：
包路径：ucar.unidata.io.RandomAccessFile
类名称：RandomAccessFile
方法名：acquire

RandomAccessFile.acquire介绍

暂无

代码示例

代码示例来源：origin: Unidata/thredds

  1. @Override
  2. public boolean isPartition(Path indexFile) throws IOException {
  3.  if (debug) System.out.printf("GribCdmIndex.isPartition %s%n", indexFile);
  4.  try (RandomAccessFile raf = RandomAccessFile.acquire(indexFile.toString())) {
  5.   GribCollectionType type = getType(raf);
  6.   return (type == GribCollectionType.Partition1) || (type == GribCollectionType.Partition2);
  7.  }
  8. }

代码示例来源：origin: Unidata/thredds

  1. public void reacquire() throws IOException {
  2.  raf = RandomAccessFile.acquire(location);
  3.  this.raf.order(rafOrder);
  4. }

代码示例来源：origin: Unidata/thredds

  1. private void init() {
  2.  if (!exists) return;
  3.  try {
  4.   if (dataRaf != null)
  5.    this.timeSeriesRaf = dataRaf; // single station case - data file already open
  6.   else
  7.    this.timeSeriesRaf = RandomAccessFile.acquire(file.getPath());
  8.   totalBytes = timeSeriesRaf.length();
  9.   timeSeriesRaf.seek(0);
  10.  } catch (IOException e) {
  11.   throw new RuntimeException(e);
  12.  }
  13. }

代码示例来源：origin: Unidata/thredds

  1. public RandomAccessFile getDataRaf(int fileno) throws IOException {
  2.  // absolute location
  3.  MFile mfile = fileMap.get(fileno);
  4.  String filename = mfile.getPath();
  5.  File dataFile = new File(filename);
  6.  // if data file does not exist, check reletive location - eg may be /upc/share instead of Q:
  7.  if (!dataFile.exists()) {
  8.   if (fileMap.size() == 1) {
  9.    dataFile = new File(directory, name); // single file case
  10.   } else {
  11.    dataFile = new File(directory, dataFile.getName()); // must be in same directory as the ncx file
  12.   }
  13.  }
  14.  // data file not here
  15.  if (!dataFile.exists()) {
  16.   throw new FileNotFoundException("data file not found = " + dataFile.getPath());
  17.  }
  18.  RandomAccessFile want = RandomAccessFile.acquire(dataFile.getPath());
  19.  want.order(RandomAccessFile.BIG_ENDIAN);
  20.  return want;
  21. }

代码示例来源：origin: Unidata/thredds

  1. public static BufrCdmIndex readIndex(String indexFilename) throws IOException {
  2.  BufrCdmIndex index =  new BufrCdmIndex();
  3.  try (RandomAccessFile raf = RandomAccessFile.acquire(indexFilename)) {
  4.    index.readIndex(raf);
  5.  }
  6.  return index;
  7. }

代码示例来源：origin: Unidata/thredds

  1. static private boolean isUpdateNeeded(String idxFilenameOrg, CollectionUpdateType updateType, GribCollectionType wantType, Logger logger) {
  2.  if (updateType == CollectionUpdateType.never) return false;
  3.  // see if index already exists
  4.  File collectionIndexFile = GribIndexCache.getExistingFileOrCache(idxFilenameOrg);
  5.  if (collectionIndexFile != null) {   // it exists
  6.   boolean bad;
  7.   try (RandomAccessFile raf = RandomAccessFile.acquire(collectionIndexFile.getPath())) {  // read it to verify its good
  8.    GribCollectionType type = getType(raf);
  9.    bad = (type != wantType);
  10.    if (!bad && updateType == CollectionUpdateType.nocheck) return false;  // use if index is ok
  11.   } catch (IOException ioe) {
  12.    bad = true;
  13.   }
  14.   if (bad) { // delete the file and remove from cache if its in there
  15.    RandomAccessFile.eject(collectionIndexFile.getPath());
  16.    if (!collectionIndexFile.delete())
  17.     logger.warn("failed to delete {}", collectionIndexFile.getPath());
  18.   }
  19.  }
  20.  return true;
  21. }

代码示例来源：origin: Unidata/thredds

  1. dataRaf = RandomAccessFile.acquire(base+DAT_EXT);
  2. stnRaf = RandomAccessFile.acquire(base+STN_EXT);
  3. stnRaf = RandomAccessFile.acquire(base+STN_EXT);
  4. dataRaf = RandomAccessFile.acquire(base+DAT_EXT);

代码示例来源：origin: Unidata/thredds

  1. ucar.unidata.io.RandomAccessFile.acquire(canonicalizeUriString(location), bufferSize);

代码示例来源：origin: Unidata/thredds

  1. /**
  2.  * This is can only be used for local netcdf-3 files.
  3.  *
  4.  * @param filename location
  5.  * @throws java.io.IOException if error
  6.  * @deprecated use NetcdfFile.open( location) or NetcdfDataset.openFile( location)
  7.  */
  8. public NetcdfFile(String filename) throws IOException {
  9.  this.location = filename;
  10.  ucar.unidata.io.RandomAccessFile raf = ucar.unidata.io.RandomAccessFile.acquire(filename);
  11.  //ucar.unidata.io.RandomAccessFile raf = new ucar.unidata.io.MMapRandomAccessFile(filename, "r");
  12.  this.spi = SPFactory.getServiceProvider();
  13.  spi.open(raf, this, null);
  14.  finish();
  15. }

代码示例来源：origin: Unidata/thredds

  1. raf = ucar.unidata.io.RandomAccessFile.acquire(uncompressedFileName, buffer_size);
  2. raf = ucar.unidata.io.RandomAccessFile.acquire(uriString, buffer_size);

代码示例来源：origin: Unidata/thredds

  1. public FileCacheable open(DatasetUrl durl, int buffer_size, CancelTask cancelTask, Object iospMessage) throws IOException {
  2.   try (RandomAccessFile raf = RandomAccessFile.acquire(durl.trueurl)) {
  3.    Partition p = (Partition) iospMessage;
  4.    return GribCdmIndex.openGribCollectionFromIndexFile(raf, p.getConfig(), p.getLogger()); // do we know its a partition ?
  5.   } catch (Throwable t) {
  6.    RandomAccessFile.eject(durl.trueurl);
  7.    throw t;
  8.   }
  9.  }
  10. };

代码示例来源：origin: Unidata/thredds

  1. public void write() throws IOException {
  2.  try (RandomAccessFile raf = RandomAccessFile.acquire(fileIn)) {
  3.   Grib2RecordScanner scanner = new Grib2RecordScanner(raf);
  4.   while (scanner.hasNext()) {
  5.    Grib2Record gr = scanner.next();
  6.    float[] data = gr.readData(raf);
  7.    for (int i=0; i<data.length; i++) {
  8.     data[i] = bitShave(data[i], mask11);
  9.     if (i % 10 == 0)
  10.      System.out.println();
  11.    }
  12.   }
  13.  }
  14. }

代码示例来源：origin: Unidata/thredds

  1. GribCollectionImmutable result = null;
  2. try (RandomAccessFile raf = RandomAccessFile.acquire(indexFilenameInCache)) {
  3.  GribCollectionType type = getType(raf);

代码示例来源：origin: Unidata/thredds

  1. GribCollectionMutable result = null;
  2. try (RandomAccessFile raf = RandomAccessFile.acquire(indexFilenameInCache)) {
  3.  GribCollectionType type = getType(raf);

代码示例来源：origin: Unidata/thredds

  1. @Override
  2. public boolean readMFiles(Path indexFile, List<MFile> result) throws IOException {
  3.  if (debug) System.out.printf("GribCdmIndex.readMFiles %s%n", indexFile);
  4.  try (RandomAccessFile raf = RandomAccessFile.acquire(indexFile.toString())) {
  5.   // GribCollectionType type = getType(raf);
  6.   // if (type == GribCollectionType.GRIB1 || type == GribCollectionType.GRIB2) {
  7.   if (openIndex(raf, logger)) {
  8.    File protoDir = new File(gribCollectionIndex.getTopDir());
  9.    int n = gribCollectionIndex.getMfilesCount();
  10.    for (int i = 0; i < n; i++) {
  11.     GribCollectionProto.MFile mfilep = gribCollectionIndex.getMfiles(i);
  12.     result.add(new GcMFile(protoDir, mfilep.getFilename(), mfilep.getLastModified(), mfilep.getLength(), mfilep.getIndex()));
  13.    }
  14.   }
  15.   return true;
  16.   //}
  17.  }
  18.  //return false;
  19. }

代码示例来源：origin: Unidata/thredds

  1. /**
  2.   * Get the data file to use (if this is a template)
  3.   *
  4.   * @param eIndex ensemble index
  5.   * @param tIndex time index
  6.   * @return the current file
  7.   * @throws IOException couldn't open the current file
  8.   */
  9.  private RandomAccessFile getDataFile(int eIndex, int tIndex) throws IOException {
  11.   String dataFilePath = gradsDDF.getFileName(eIndex, tIndex);
  12.   if (!gradsDDF.isTemplate()) {  // we only have one file
  13.    if (dataFile != null) {
  14.     return dataFile;
  15.    }
  16.   }
  17.   if (dataFile != null) {
  18.    String path = dataFile.getLocation();
  19.    if (path.equals(dataFilePath)) {
  20.     return dataFile;
  21.    } else {
  22.     dataFile.close();
  23.    }
  24.   }
  25.   dataFile = RandomAccessFile.acquire(dataFilePath);
  26.   dataFile.order(getByteOrder());
  27.   return dataFile;
  28.  }
  29. }

代码示例来源：origin: Unidata/thredds

  1. @Override
  2. public boolean readChildren(Path indexFile, AddChildCallback callback) throws IOException {
  3.  if (debug) System.out.printf("GribCdmIndex.readChildren %s%n", indexFile);
  4.  try (RandomAccessFile raf = RandomAccessFile.acquire(indexFile.toString())) {
  5.   GribCollectionType type = getType(raf);
  6.   if (type == GribCollectionType.Partition1 || type == GribCollectionType.Partition2) {
  7.    if (openIndex(raf, logger)) {
  8.     String topDir = gribCollectionIndex.getTopDir();
  9.     int n = gribCollectionIndex.getMfilesCount(); // partition index files stored in MFiles
  10.     for (int i = 0; i < n; i++) {
  11.      GribCollectionProto.MFile mfilep = gribCollectionIndex.getMfiles(i);
  12.      callback.addChild(topDir, mfilep.getFilename(), mfilep.getLastModified());
  13.     }
  14.     return true;
  15.    }
  16.   }
  17.   return false;
  18.  }
  19. }

代码示例来源：origin: Unidata/thredds

  1. @Test
  2. public void testCheckFileType()
  3.     throws Exception
  4. {
  5.   String location = canonjoin(tdsContentRootPath, canonjoin(PREFIX, filename));
  6.   try (RandomAccessFile raf = RandomAccessFile.acquire(location)) {
  7.     // Verify type
  8.     int found = NCheader.checkFileType(raf);
  9.     String foundname = NCheader.formatName(found);
  10.     String kindname = NCheader.formatName(kind);
  11.     System.err.println("Testing format: " + kindname);
  12.     Assert.assertTrue(String.format("***Fail: expected=%s found=%s%n", kindname, foundname),
  13.         kind == found);
  14.   }
  15. }

代码示例来源：origin: Unidata/thredds

  1. @Test
  2. public void testReadSubsection()
  3.     throws IOException, InvalidRangeException
  4. {
  5.   String location = canonjoin(tdsContentRootPath,"thredds/public/testdata/nc_test_cdf5.nc");
  6.   try (RandomAccessFile raf  = RandomAccessFile.acquire(location)) {
  7.     // Verify that this is a netcdf-5 file
  8.     int format = NCheader.checkFileType(raf);
  9.     Assert.assertTrue("Fail: file format is not CDF-5",format == NCheader.NC_FORMAT_64BIT_DATA);
  10.   }
  11.   try (NetcdfFile jni = openJni(location)) {
  12.     jni.setLocation(location + " (jni)");
  13.     Array data = read(jni, "f4", "0:2");
  14.     if(prop_visual) {
  15.       String dump = NCdumpW.toString(data);
  16.       logger.debug(dump);
  17.       String testresult = dump.replace('r', ' ').replace('\n', ' ').trim();
  18.       visual("CDF Read", testresult);
  19.     }
  20.     Assert.assertTrue(String.format("***Fail: data mismatch"),
  21.                      MAMath.nearlyEquals(data, BASELINE));
  22.     System.err.println("***Pass");
  23.   }
  24. }

代码示例来源：origin: Unidata/thredds

  1. byte[] b = new byte[recordsLen];
  2. try (RandomAccessFile indexRaf = RandomAccessFile.acquire(indexFilename)) {

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