// HKey column from row of parent table
if (parentStoreData == null) {
// Initialize parent metadata and state
RowDef parentRowDef = rowDef.table().getParentTable().rowDef();
TableIndex parentPkIndex = parentRowDef.getPKIndex();
indexToHKey = parentPkIndex.indexToHKey();
parentStoreData = createStoreData(session, parentPkIndex);
parentPKIndexRow = readIndexRow(session, parentPkIndex, parentStoreData, rowDef, rowData);
i2hPosition = hKeyColumn.positionInHKey();
}
if(indexToHKey.isOrdinal(i2hPosition)) {