assertEquals(null, ((OrcLazyObject) row.getFieldValue(0)).materialize());
union = (OrcUnion) ((OrcLazyUnion) row.getFieldValue(1)).materialize();
assertEquals(0, union.getTag());
assertEquals(null, union.getObject());
lazyRow = (OrcLazyStruct) rows.next(lazyRow);
row = (OrcStruct) lazyRow.materialize();
assertEquals(null, ((OrcLazyObject) row.getFieldValue(0)).materialize());
((OrcLazyUnion) row.getFieldValue(1)).materialize();
assertEquals(1, union.getTag());
assertEquals(null, union.getObject());
lazyRow = (OrcLazyStruct) rows.next(lazyRow);