public void extractRow(VectorizedRowBatch batch, int batchIndex, Object[] objects) {
    for (int i = 0; i < projectionColumnNums.length; i++) {
      objects[i] = extractRowColumn(batch, batchIndex, i, OutputType.WRITABLES);
    }
  }
Extract an row object from a VectorizedRowBatch at batchIndex.

@param batch VRB instance to lookup the row from
@param batchIndex index of the row within this batch
@param objects output
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/VectorExtractRow.java