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


                  }
               })
               .create();


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

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          IOUtils.close(writer, reader);
        } else {
          IOUtils.closeWhileHandlingException(writer, reader);
        }
      } finally {
        for(String file : dir.listAll()) {
          File path = new File(tempIndexPath, file);
          if (path.delete() == false) {
            throw new IllegalStateException("failed to remove " + path);
          }
        }

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                                                  "_0_1.liv",
                                                  "_0.si",
                                                  "segments_2",
                                                  "segments.gen"};


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

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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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          dir,
          newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random())).
              setRAMBufferSizeMB(0.000001).
              setMergePolicy(newLogMergePolicy(10))
      );
      int lastNumFile = dir.listAll().length;
      for(int j=0;j<9;j++) {
        Document doc = new Document();
        doc.add(newField("field", "aaa" + j, storedTextType));
        writer.addDocument(doc);
        int numFile = dir.listAll().length;

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      int lastNumFile = dir.listAll().length;
      for(int j=0;j<9;j++) {
        Document doc = new Document();
        doc.add(newField("field", "aaa" + j, storedTextType));
        writer.addDocument(doc);
        int numFile = dir.listAll().length;
        // Verify that with a tiny RAM buffer we see new
        // segment after every doc
        assertTrue(numFile > lastNumFile);
        lastNumFile = numFile;
      }

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


      List<String> files = new ArrayList<String>(Arrays.asList(dir.listAll()));


      // RAMDir won't have a write.lock, but fs dirs will:
      files.remove("write.lock");


      assertTrue(files.contains("_0.cfs"));

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        w.commit();
      }
      IndexReader r2 = DirectoryReader.openIfChanged(r);
      assertNotNull(r2);
      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
      // merged away, because we have a reader open
      // against this file, it should still be here:

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      assertTrue(files.contains("_0.cfs"));
      // forceMerge created this
      //assertTrue(files.contains("_2.cfs"));
      w.deleteUnusedFiles();


      files = Arrays.asList(dir.listAll());
      // r still holds this file open
      assertTrue(files.contains("_0.cfs"));
      //assertTrue(files.contains("_2.cfs"));


      r.close();

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