Examples of org.apache.lucene.store.Directory.listAll()

org.apache.lucene.store.Directory.listAll()
Returns an array of strings, one for each file in the directory. @throws IOException

    writer.rollback();
    assertEquals("no files should exist in the directory after rollback", 0, dir.listAll().length);


    // Since we rolled-back above, that close should be a no-op
    writer.close();
    assertEquals("expected a no-op close after IW.rollback()", 0, dir.listAll().length);
    dir.close();
  }


  public void testNoSegmentFile() throws IOException {
    BaseDirectoryWrapper dir = newDirectory();

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      w.deleteAll();
      w.commit();
      // Make sure we accumulate no files except for empty
      // segments_N and segments.gen:
      assertTrue(d.listAll().length <= 2);
    }


    w.close();
    d.close();
  }

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    bw.write("  <capabilities>" + indexInfo.getIndexFormat().capabilities + "</capabilities>\n");
    bw.write(" </indexFormat>\n");
    bw.write(" <directoryImpl>" + indexInfo.getDirImpl() + "</directoryImpl>\n");
    Directory dir = indexInfo.getDirectory();
    if (dir != null) {
      bw.write(" <files count='" + dir.listAll().length + "'>\n");
      String[] files = dir.listAll();
      Arrays.sort(files);
      for (String file : files) {
        bw.write("  <file name='" + file +
            "' size='" + dir.fileLength(file) +

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    bw.write(" </indexFormat>\n");
    bw.write(" <directoryImpl>" + indexInfo.getDirImpl() + "</directoryImpl>\n");
    Directory dir = indexInfo.getDirectory();
    if (dir != null) {
      bw.write(" <files count='" + dir.listAll().length + "'>\n");
      String[] files = dir.listAll();
      Arrays.sort(files);
      for (String file : files) {
        bw.write("  <file name='" + file +
            "' size='" + dir.fileLength(file) +
            "' func='" + IndexGate.getFileFunction(file) + "'/>\n");

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                               "_0_1.del",
                               "_0_1.s" + contentFieldIndex,
                               "segments_2",
                               "segments.gen"};


      String[] actual = dir.listAll();
      Arrays.sort(expected);
      Arrays.sort(actual);
      if (!Arrays.equals(expected, actual)) {
        fail("incorrect filenames in index: expected:\n    " + asString(expected) + "\n  actual:\n    " + asString(actual));
      }

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    lmp.setUseCompoundFile(true);
    IndexWriter w3 = new IndexWriter(dir, conf);
    w3.addIndexes(readers);
    w3.close();
    
    assertEquals("Only one compound segment should exist", 3, dir.listAll().length);
  }
 
  // LUCENE-2996: tests that addIndexes(IndexReader) applies existing deletes correctly.
  public void testExistingDeletes() throws Exception {
    Directory[] dirs = new Directory[2];

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        writer.close();


        long gen = SegmentInfos.getCurrentSegmentGeneration(dir);
        assertTrue("segment generation should be > 1 but got " + gen, gen > 1);


        String[] files = dir.listAll();
        for(int i=0;i<files.length;i++) {
          if (files[i].endsWith(".cfs")) {
            dir.deleteFile(files[i]);
            break;
          }

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                    "_0_1.del",
                    "_0_1.s" + contentFieldIndex,
                    "segments_3",
                    "segments.gen"};


        String[] actual = dir.listAll();
        Arrays.sort(expected);
        Arrays.sort(actual);
        if (!Arrays.equals(expected, actual)) {
          fail("incorrect filenames in index: expected:\n    " + asString(expected) + "\n  actual:\n    " + asString(actual));
        }

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        // don't use NRT
        w.commit();
        r = IndexReader.open(dir);
      }


      List<String> files = Arrays.asList(dir.listAll());
      assertTrue(files.contains("_0.cfs"));
      w.addDocument(doc);
      w.optimize();
      if (iter == 1) {
        w.commit();

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      if (iter == 1) {
        w.commit();
      }
      IndexReader r2 = r.reopen();
      assertTrue(r != r2);
      files = Arrays.asList(dir.listAll());


      // NOTE: here we rely on "Windows" behavior, ie, even
      // though IW wanted to delete _0.cfs since it was
      // optimized away, because we have a reader open
      // against this file, it should still be here:

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