moves the scan to the next record . the method moves to the next rhs record , if possible . otherwise , it moves to the next lhs record and the first rhs record . if there are no more lhs records , the method returns false . concode_field_sep Scan s1 concode_elem_sep Scan s2 concode_field_sep int getInt concode_elem_sep Constant getVal concode_elem_sep void beforeFirst concode_elem_sep String getString concode_elem_sep void close concode_elem_sep boolean hasField