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.deleteDocuments(searchTerm);
    writer.close();


    // Now, artificially create an extra .del file & extra
    // .s0 file:
    String[] files = dir.listAll();


    /*
    for(int j=0;j<files.length;j++) {
      System.out.println(j + ": " + files[j]);
    }

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    // TODO: assert is bogus (relies upon codec-specific filenames)
    assertTrue(dir.fileExists("_3.fdt") || dir.fileExists("_3.fld"));
    assertTrue(!dir.fileExists("_3.cfs"));
    copyFile(dir, "_1.cfs", "_3.cfs");
    
    String[] filesPre = dir.listAll();


    // Open & close a writer: it should delete the above 4
    // files and nothing more:
    writer = new IndexWriter(dir, newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random())).setOpenMode(OpenMode.APPEND));
    writer.close();

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    // Open & close a writer: it should delete the above 4
    // files and nothing more:
    writer = new IndexWriter(dir, newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random())).setOpenMode(OpenMode.APPEND));
    writer.close();


    String[] files2 = dir.listAll();
    dir.close();


    Arrays.sort(files);
    Arrays.sort(files2);

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    IndexWriter w3 = new IndexWriter(dir, conf);
    w3.addIndexes(readers);
    w3.close();
    // we should now see segments_X,
    // segments.gen,_Y.cfs,_Y.cfe, _Z.si
    assertEquals("Only one compound segment should exist, but got: " + Arrays.toString(dir.listAll()), 5, dir.listAll().length);
    dir.close();
  }
  
  private static final class UnRegisteredCodec extends FilterCodec {
    public UnRegisteredCodec() {

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    IndexWriter w3 = new IndexWriter(dir, conf);
    w3.addIndexes(readers);
    w3.close();
    // we should now see segments_X,
    // segments.gen,_Y.cfs,_Y.cfe, _Z.si
    assertEquals("Only one compound segment should exist, but got: " + Arrays.toString(dir.listAll()), 5, dir.listAll().length);
    dir.close();
  }
  
  private static final class UnRegisteredCodec extends FilterCodec {
    public UnRegisteredCodec() {

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      IndexOutput os = csw.createOutput("seg_" + j + "_foo.txt", newIOContext(random()));
      for (int i = 0; i < size; i++) {
        os.writeInt(i*j);
      }
      os.close();
      String[] listAll = newDir.listAll();
      assertEquals(1, listAll.length);
      assertEquals("d.cfs", listAll[0]);
    }
    createSequenceFile(dir, "d1", (byte) 0, 15);
    dir.copy(csw, "d1", "d1", newIOContext(random()));

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      assertEquals(1, listAll.length);
      assertEquals("d.cfs", listAll[0]);
    }
    createSequenceFile(dir, "d1", (byte) 0, 15);
    dir.copy(csw, "d1", "d1", newIOContext(random()));
    String[] listAll = newDir.listAll();
    assertEquals(1, listAll.length);
    assertEquals("d.cfs", listAll[0]);
    csw.close();
    CompoundFileDirectory csr = new CompoundFileDirectory(newDir, "d.cfs", newIOContext(random()), false);
    for (int j = 0; j < 2; j++) {

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    newDir.copy(csw, "b.cfe", "b.cfe", newIOContext(random()));
    newDir.deleteFile("b.cfs");
    newDir.deleteFile("b.cfe");
    csw.close();
    
    assertEquals(2, newDir.listAll().length);
    csw = new CompoundFileDirectory(newDir, "d.cfs", newIOContext(random()), false);
    
    assertEquals(2, csw.listAll().length);
    nested = new CompoundFileDirectory(csw, "b.cfs", newIOContext(random()), false);

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                  }
               })
               .create();


         AssertJUnit.assertEquals(0, dir.listAll().length);
      } finally {
         if (dir != null) dir.close();
      }
   }

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      file2.setSize(worldText.length());


      Set<String> s = new HashSet<String>();
      s.add("Hello.txt");
      s.add("World.txt");
      Set other = new HashSet(Arrays.asList(dir.listAll()));


      // ok, file listing works.
      AssertJUnit.assertEquals(s, other);


      IndexInput ii = dir.openInput("Hello.txt", IOContext.DEFAULT);

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