@Override
  protected LazyObjectBase createLazyObjectBase(ObjectInspector objectInspector) {
    return LazyFactory.createLazyObject(objectInspector);
  }
Construct a ColumnarStruct object with the TypeInfo. It creates the first
level object at the first place

@param oi
         the ObjectInspector representing the type of this LazyStruct.
@param notSkippedColumnIDs
         the column ids that should not be skipped
serde/src/java/org/apache/hadoop/hive/serde2/columnar/ColumnarStruct.java