java/core/src/java/org/apache/orc/impl/TreeReaderFactory.java [519:547]:
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    @Override
    public void seek(PositionProvider[] index, ReadPhase readPhase) throws IOException {
      seek(index[columnId], readPhase);
    }

    @Override
    public void seek(PositionProvider index, ReadPhase readPhase) throws IOException {
      super.seek(index, readPhase);
      reader.seek(index);
    }

    @Override
    public void nextVector(ColumnVector previousVector,
                           boolean[] isNull,
                           final int batchSize,
                           FilterContext filterContext,
                           ReadPhase readPhase) throws IOException {
      final LongColumnVector result = (LongColumnVector) previousVector;

      // Read present/isNull stream
      super.nextVector(result, isNull, batchSize, filterContext, readPhase);

      // Read value entries based on isNull entries
      reader.nextVector(result, result.vector, batchSize);
    }

    @Override
    public void skipRows(long items, ReadPhase readPhase) throws IOException {
      reader.skip(countNonNulls(items));
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java/core/src/java/org/apache/orc/impl/TreeReaderFactory.java [586:614]:
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    @Override
    public void seek(PositionProvider[] index, ReadPhase readPhase) throws IOException {
      seek(index[columnId], readPhase);
    }

    @Override
    public void seek(PositionProvider index, ReadPhase readPhase) throws IOException {
      super.seek(index, readPhase);
      reader.seek(index);
    }

    @Override
    public void nextVector(ColumnVector previousVector,
                           boolean[] isNull,
                           final int batchSize,
                           FilterContext filterContext,
                           ReadPhase readPhase) throws IOException {
      final LongColumnVector result = (LongColumnVector) previousVector;

      // Read present/isNull stream
      super.nextVector(result, isNull, batchSize, filterContext, readPhase);

      // Read value entries based on isNull entries
      reader.nextVector(result, result.vector, batchSize);
    }

    @Override
    public void skipRows(long items, ReadPhase readPhase) throws IOException {
      reader.skip(countNonNulls(items));
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