@Override
public Row next() {
// If we've ever seen a row, just defer to input
if (sawOne) {
return input.next();
}
Row result = input.next();
// If we saw a row, mark it as such and defer to input
if (result != null) {
sawOne = true;
return result;
}
// Our search is at an end; return our answer
if (atTable == null || atTable == stopSearchTable) {
return null;
}
// Close the input, shorten our hkey, re-open and try again
input.close();
assert atTable.getParentTable() != null : atTable;
atTable = atTable.getParentTable();
HKey hkey = getHKeyFromBindings();
hkey.useSegments(atTable.getDepth() + 1);
input.rebind(hkey, deep);
input.open();
return next();
}
