vole
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| 1 | package index |
| 2 | |
| 3 | // The `#42` alias, as the index sees it. |
| 4 | // |
| 5 | // The number is derived from history (metadata.LoadNumbers) and cached here so a |
| 6 | // page render does not walk git. It is not authoritative: `vole admin index |
| 7 | // rebuild` recomputes every row from the metadata branch, and the answer is the |
| 8 | // same because the history is. |
| 9 | |
| 10 | // Numbers returns every entity number in a repo, keyed by entity id. |
| 11 | func (s *Store) Numbers(repoID string) (map[string]int, error) { |
| 12 | rows, err := s.db.Query(`SELECT id, number FROM entity_numbers WHERE repo_id=?`, repoID) |
| 13 | if err != nil { |
| 14 | return nil, err |
| 15 | } |
| 16 | defer rows.Close() |
| 17 | out := map[string]int{} |
| 18 | for rows.Next() { |
| 19 | var id string |
| 20 | var number int |
| 21 | if err := rows.Scan(&id, &number); err != nil { |
| 22 | return nil, err |
| 23 | } |
| 24 | out[id] = number |
| 25 | } |
| 26 | return out, rows.Err() |
| 27 | } |
| 28 | |
| 29 | // Number returns the alias for one entity and which kind it is. An entity the |
| 30 | // branch does not number (a stale index, or one that does not exist) reports |
| 31 | // ok=false rather than zero. |
| 32 | func (s *Store) Number(repoID, id string) (number int, kind string, ok bool) { |
| 33 | err := s.db.QueryRow(`SELECT number, kind FROM entity_numbers WHERE repo_id=? AND id=?`, repoID, id). |
| 34 | Scan(&number, &kind) |
| 35 | return number, kind, err == nil |
| 36 | } |
| 37 | |
| 38 | // ByNumber resolves `#42` to the entity it names and its kind. Issues and change |
| 39 | // requests share one sequence, so the kind is part of the answer: the caller |
| 40 | // decides whether an issue or a request was asked for. |
| 41 | func (s *Store) ByNumber(repoID string, number int) (id, kind string, ok bool) { |
| 42 | err := s.db.QueryRow(`SELECT id, kind FROM entity_numbers WHERE repo_id=? AND number=?`, repoID, number). |
| 43 | Scan(&id, &kind) |
| 44 | return id, kind, err == nil |
| 45 | } |
| 46 |