Package org.apache.avro.file

Examples of org.apache.avro.file.SeekableFileInput.seek()

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      new DataFileReader<Object>(file, new GenericDatumReader<Object>());
    // get a header for this file
    DataFileStream.Header header = reader.getHeader();
    // re-open to an arbitrary position near the middle, with sync == true
    SeekableFileInput sin = new SeekableFileInput(file);
    sin.seek(sin.length() / 2);
    reader = DataFileReader.<Object>openReader(sin, new GenericDatumReader<Object>(),
        header, true);
    assertNotNull("Should be able to reopen from arbitrary point", reader.next());
    long validPos = reader.previousSync();
    // post sync, we know of a valid sync point: re-open with seek (sync == false)
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    reader = DataFileReader.<Object>openReader(sin, new GenericDatumReader<Object>(),
        header, true);
    assertNotNull("Should be able to reopen from arbitrary point", reader.next());
    long validPos = reader.previousSync();
    // post sync, we know of a valid sync point: re-open with seek (sync == false)
    sin.seek(validPos);
    reader = DataFileReader.<Object>openReader(sin, new GenericDatumReader<Object>(),
        header, false);
    assertEquals("Should not move from sync point on reopen", validPos, sin.tell());
    assertNotNull("Should be able to reopen at sync point", reader.next());
  }
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      new DataFileReader<Object>(file, new GenericDatumReader<Object>());
    // get a header for this file
    DataFileStream.Header header = reader.getHeader();
    // re-open to an arbitrary position near the middle, with sync == true
    SeekableFileInput sin = new SeekableFileInput(file);
    sin.seek(sin.length() / 2);
    reader = DataFileReader.<Object>openReader(sin, new GenericDatumReader<Object>(),
        header, true);
    assertNotNull("Should be able to reopen from arbitrary point", reader.next());
    long validPos = reader.previousSync();
    // post sync, we know of a valid sync point: re-open with seek (sync == false)
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    reader = DataFileReader.<Object>openReader(sin, new GenericDatumReader<Object>(),
        header, true);
    assertNotNull("Should be able to reopen from arbitrary point", reader.next());
    long validPos = reader.previousSync();
    // post sync, we know of a valid sync point: re-open with seek (sync == false)
    sin.seek(validPos);
    reader = DataFileReader.<Object>openReader(sin, new GenericDatumReader<Object>(),
        header, false);
    assertEquals("Should not move from sync point on reopen", validPos, sin.tell());
    assertNotNull("Should be able to reopen at sync point", reader.next());
  }
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      new DataFileReader<Object>(file, new GenericDatumReader<Object>());
    // get a header for this file
    DataFileStream.Header header = reader.getHeader();
    // re-open to an arbitrary position near the middle, with sync == true
    SeekableFileInput sin = new SeekableFileInput(file);
    sin.seek(sin.length() / 2);
    reader = DataFileReader.<Object>openReader(sin, new GenericDatumReader<Object>(),
        header, true);
    assertNotNull("Should be able to reopen from arbitrary point", reader.next());
    long validPos = reader.previousSync();
    // post sync, we know of a valid sync point: re-open with seek (sync == false)
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    reader = DataFileReader.<Object>openReader(sin, new GenericDatumReader<Object>(),
        header, true);
    assertNotNull("Should be able to reopen from arbitrary point", reader.next());
    long validPos = reader.previousSync();
    // post sync, we know of a valid sync point: re-open with seek (sync == false)
    sin.seek(validPos);
    reader = DataFileReader.<Object>openReader(sin, new GenericDatumReader<Object>(),
        header, false);
    assertEquals("Should not move from sync point on reopen", validPos, sin.tell());
    assertNotNull("Should be able to reopen at sync point", reader.next());
  }
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      new DataFileReader<Object>(file, new GenericDatumReader<Object>());
    // get a header for this file
    DataFileStream.Header header = reader.getHeader();
    // re-open to an arbitrary position near the middle, with sync == true
    SeekableFileInput sin = new SeekableFileInput(file);
    sin.seek(sin.length() / 2);
    reader = DataFileReader.<Object>openReader(sin, new GenericDatumReader<Object>(),
        header, true);
    assertNotNull("Should be able to reopen from arbitrary point", reader.next());
    long validPos = reader.previousSync();
    // post sync, we know of a valid sync point: re-open with seek (sync == false)
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    reader = DataFileReader.<Object>openReader(sin, new GenericDatumReader<Object>(),
        header, true);
    assertNotNull("Should be able to reopen from arbitrary point", reader.next());
    long validPos = reader.previousSync();
    // post sync, we know of a valid sync point: re-open with seek (sync == false)
    sin.seek(validPos);
    reader = DataFileReader.<Object>openReader(sin, new GenericDatumReader<Object>(),
        header, false);
    assertEquals("Should not move from sync point on reopen", validPos, sin.tell());
    assertNotNull("Should be able to reopen at sync point", reader.next());
  }
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      new DataFileReader<Object>(file, new GenericDatumReader<Object>());
    // get a header for this file
    DataFileStream.Header header = reader.getHeader();
    // re-open to an arbitrary position near the middle, with sync == true
    SeekableFileInput sin = new SeekableFileInput(file);
    sin.seek(sin.length() / 2);
    reader = DataFileReader.<Object>openReader(sin, new GenericDatumReader<Object>(),
        header, true);
    assertNotNull("Should be able to reopen from arbitrary point", reader.next());
    long validPos = reader.previousSync();
    // post sync, we know of a valid sync point: re-open with seek (sync == false)
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    reader = DataFileReader.<Object>openReader(sin, new GenericDatumReader<Object>(),
        header, true);
    assertNotNull("Should be able to reopen from arbitrary point", reader.next());
    long validPos = reader.previousSync();
    // post sync, we know of a valid sync point: re-open with seek (sync == false)
    sin.seek(validPos);
    reader = DataFileReader.<Object>openReader(sin, new GenericDatumReader<Object>(),
        header, false);
    assertEquals("Should not move from sync point on reopen", validPos, sin.tell());
    assertNotNull("Should be able to reopen at sync point", reader.next());
  }
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