fetchRow receives a *sql.Rows value and tries to map all the rows into a single struct given by the pointer `dst`.
(iter *iterator, dst interface{})
| 47 | // fetchRow receives a *sql.Rows value and tries to map all the rows into a |
| 48 | // single struct given by the pointer `dst`. |
| 49 | func fetchRow(iter *iterator, dst interface{}) error { |
| 50 | var columns []string |
| 51 | var err error |
| 52 | |
| 53 | rows := iter.cursor |
| 54 | |
| 55 | dstv := reflect.ValueOf(dst) |
| 56 | |
| 57 | if dstv.IsNil() || dstv.Kind() != reflect.Ptr { |
| 58 | return ErrExpectingPointer |
| 59 | } |
| 60 | |
| 61 | itemV := dstv.Elem() |
| 62 | |
| 63 | if columns, err = rows.Columns(); err != nil { |
| 64 | return err |
| 65 | } |
| 66 | |
| 67 | reset(dst) |
| 68 | |
| 69 | next := rows.Next() |
| 70 | |
| 71 | if !next { |
| 72 | if err = rows.Err(); err != nil { |
| 73 | return err |
| 74 | } |
| 75 | return db.ErrNoMoreRows |
| 76 | } |
| 77 | |
| 78 | itemT := itemV.Type() |
| 79 | item, err := fetchResult(iter, itemT, columns) |
| 80 | if err != nil { |
| 81 | return err |
| 82 | } |
| 83 | |
| 84 | if itemT.Kind() == reflect.Ptr { |
| 85 | itemV.Set(item) |
| 86 | } else { |
| 87 | itemV.Set(reflect.Indirect(item)) |
| 88 | } |
| 89 | |
| 90 | return nil |
| 91 | } |
| 92 | |
| 93 | // fetchRows receives a *sql.Rows value and tries to map all the rows into a |
| 94 | // slice of structs given by the pointer `dst`. |