Examples of org.apache.lucene.store.SimpleFSDirectory$SimpleFSIndexInput$Descriptor

org.apache.lucene.store.SimpleFSDirectory
A straightforward implementation of {@link FSDirectory}using java.io.RandomAccessFile. However, this class has poor concurrent performance (multiple threads will bottleneck) as it synchronizes when multiple threads read from the same file. It's usually better to use {@link NIOFSDirectory} or {@link MMapDirectory} instead.

    public void setUp() throws Exception {
       super.setUp();
       File file = new File(System.getProperty("tempDir"), "testIndex");
       _TestUtil.rmDir(file);
       // use a simple FSDir here, to be sure to have SimpleFSInputs
       dir = new SimpleFSDirectory(file,null);
    }

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    @Override
    public void setUp() throws Exception {
       super.setUp();
       File file = _TestUtil.getTempDir("testIndex");
       // use a simple FSDir here, to be sure to have SimpleFSInputs
       dir = new SimpleFSDirectory(file,null);
    }

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   * local FS implementation based on the current OS. However, we have seen cases
   * where using this leads to an implementation that hits {@link java.lang.OutOfMemoryError}
   * when building large indexes.
   */
  protected Directory getDirectoryImplementation(File location) throws IOException {
    return new SimpleFSDirectory(location, NoLockFactory.getNoLockFactory());
  }

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    File tmpDirFile = Files.createTempDir();
    int maxMergeFactor = conf.getInt(MAX_MERGE_FACTOR_KEY, -1);
    Preconditions.checkArgument(maxMergeFactor > 0);


    Directory directory = new SimpleFSDirectory(tmpDirFile, NoLockFactory.getNoLockFactory());
    IndexWriter writer = LuceneIndexOutputFormat.createIndexWriter(
        directory,
        new LuceneIndexOutputFormat.NeverTokenizeAnalyzer(),
        maxMergeFactor);

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