Package org.apache.lucene.store

Examples of org.apache.lucene.store.FSDirectory

Unfortunately, because of system peculiarities, there is no single overall best implementation. Therefore, we've added the {@link #open} method, to allow Lucene to choosethe best FSDirectory implementation given your environment, and the known limitations of each implementation. For users who have no reason to prefer a specific implementation, it's best to simply use {@link #open}. For all others, you should instantiate the desired implementation directly.

The locking implementation is by default {@link NativeFSLockFactory}, but can be changed by passing in a custom {@link LockFactory} instance. @see Directory

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    long s = System.nanoTime();
    IndexWriterConfig conf = new IndexWriterConfig(LuceneVersionConstant.LUCENE_VERSION, new KeywordAnalyzer());
    IndexDeletionPolicyReader indexDeletionPolicy = new IndexDeletionPolicyReader(
        new KeepOnlyLastCommitDeletionPolicy());
    conf.setIndexDeletionPolicy(indexDeletionPolicy);
    FSDirectory control = FSDirectory.open(fileControl);
    Directory dir = getControlDir(control, directory);
    // The serial merge scheduler can be useful for debugging.
    // conf.setMergeScheduler(new SerialMergeScheduler());
    IndexWriter writer = new IndexWriter(dir, conf);
    int numDocs = 10000;
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      sb.append("commit{");

      Directory dir = commit.getDirectory();

      if (dir instanceof FSDirectory) {
        FSDirectory fsd = (FSDirectory) dir;
        sb.append("dir=").append(fsd.getFile());
      } else {
        sb.append("dir=").append(dir);
      }

      sb.append(",segFN=").append(commit.getSegmentsFileName());
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    Directory dir = commit.getDirectory();

    // For anything persistent, make something that will
    // be the same, regardless of the Directory instance.
    if (dir instanceof FSDirectory) {
      FSDirectory fsd = (FSDirectory) dir;
      File fdir = fsd.getFile();
      sb.append(fdir.getPath());
    } else {
      sb.append(dir);
    }
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    log.info("Opening " + this.name);

    SolrIndexReader.setSearcher(reader, this);

    if (r.directory() instanceof FSDirectory) {
      FSDirectory fsDirectory = (FSDirectory) r.directory();
      indexDir = fsDirectory.getFile().getAbsolutePath();
    }

    this.closeReader = closeReader;
    setSimilarity(schema.getSimilarity());
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  }

  private void initSourceReader() {
    if (sourceLocation != null) {
      try {
        FSDirectory luceneIndexDir = FSDirectory.getDirectory(sourceLocation);
        this.reader = IndexReader.open(luceneIndexDir);
      } catch (IOException e) {
        throw new RuntimeException(e);
      }
    }
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  }

  private static Directory newFSDirectoryImpl(
      Class<? extends FSDirectory> clazz, File file)
      throws IOException {
    FSDirectory d = null;
    try {
      // Assuming every FSDirectory has a ctor(File), but not all may take a
      // LockFactory too, so setting it afterwards.
      Constructor<? extends FSDirectory> ctor = clazz.getConstructor(File.class);
      d = ctor.newInstance(file);
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  }
 
  private final static String storePathname = "testLuceneMmap";

  public void testMmapIndex() throws Exception {
    FSDirectory storeDirectory;
    storeDirectory = FSDirectory.getDirectory(storePathname);

    // plan to add a set of useful stopwords, consider changing some of the
    // interior filters.
    StandardAnalyzer analyzer = new StandardAnalyzer(new HashSet());
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    String tmpIODir = System.getProperty("tempDir");
    String userName = System.getProperty("user.name");
    String path = tmpIODir + File.separator + "lazyDir" + userName;
    File file = new File(path);
    _TestUtil.rmDir(file);
    FSDirectory tmpDir = FSDirectory.getDirectory(file);
    assertTrue(tmpDir != null);
    DocumentWriter writer = new DocumentWriter(tmpDir, new WhitespaceAnalyzer(),
            Similarity.getDefault(), 50);
    assertTrue(writer != null);
    writer.addDocument("test", testDoc);
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    setIndexReaderSearcher();
  }

  static synchronized void setIndexReaderSearcher() {
    try{
    FSDirectory index = NIOFSDirectory.open(indexDir);
    if(reader == null){
      reader = DirectoryReader.open(index);
      searcher = new IndexSearcher(reader);
    }else{
      DirectoryReader newreader = DirectoryReader.openIfChanged(reader);
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    indexDir = new File(indexDirStr);
  }


  void setIndexReaderSearcher() throws IOException {
    FSDirectory index = FSDirectory.open(indexDir);
    if(reader == null){
      reader = DirectoryReader.open(index);
      searcher = new IndexSearcher(reader);
    }else{
      DirectoryReader newreader = DirectoryReader.openIfChanged(reader);
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