Always defer *sql.Rows.Close and consult with Err (#844)

* Always defer *sql.Rows.Close and consult with Err

database/sql.Rows.Next() makes sure to call Close only after exhausting
result rows which would NOT happen when returning early from a bad Scan.
Close being idempotent makes it a great candidate to get always deferred
regardless of what happens later on the result set.

This change also makes sure call Err() after exhausting Next() and
propagate non-nil results from it as the documentation advises.

Closes #764

Signed-off-by: Kiril Vladimiroff <kiril@vladimiroff.org>

* Override named result parameters in last returns

Signed-off-by: Kiril Vladimiroff <kiril@vladimiroff.org>

* Do the same over new changes that got merged

Signed-off-by: Kiril Vladimiroff <kiril@vladimiroff.org>

Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
This commit is contained in:
Kiril Vladimiroff 2020-02-11 16:12:21 +02:00 committed by GitHub
parent d45f869cdd
commit d5dbe546e4
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24 changed files with 81 additions and 49 deletions

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@ -203,6 +203,7 @@ func (s *publicRoomsStatements) selectPublicRooms(
if err != nil {
return []types.PublicRoom{}, nil
}
defer rows.Close() // nolint: errcheck
rooms := []types.PublicRoom{}
for rows.Next() {
@ -222,7 +223,7 @@ func (s *publicRoomsStatements) selectPublicRooms(
rooms = append(rooms, r)
}
return rooms, nil
return rooms, rows.Err()
}
func (s *publicRoomsStatements) selectRoomVisibility(