returns the tupledesc with field names from the underlying heapfile , prefixed with the tablealias string from the constructor . this prefix becomes useful when joining tables containing a field s with the same name . concode_field_sep boolean isOpen concode_elem_sep String alias concode_elem_sep long serialVersionUID concode_elem_sep DbFileIterator it concode_elem_sep String tablename concode_elem_sep TransactionId tid concode_elem_sep TupleDesc myTd concode_field_sep Tuple next concode_elem_sep void rewind concode_elem_sep String getTableName concode_elem_sep void reset concode_elem_sep boolean hasNext concode_elem_sep String getAlias concode_elem_sep void close concode_elem_sep void open
TupleDesc function ( ) { return myTd ; }