func NewDBBackend(db *gomodel.DB, timeFormat string) (b gotmsq.Backend, err error) {
d := &DB{timeFormat: timeFormat}
b = d
defer func(d *DB, err *error) {
if *err == nil {
return
}
if d.stmtClearTimeout != nil {
d.stmtClearTimeout.Close()
}
if d.stmtInsert != nil {
d.stmtInsert.Close()
}
if d.stmtQueryMessage != nil {
d.stmtQueryMessage.Close()
}
if d.stmtDeleteById != nil {
d.stmtDeleteById.Close()
}
}(d, &err)
d.stmtClearTimeout, err = db.StmtById(deleteTimeoutMessagesSQL)
if err != nil {
return
}
d.stmtQueryMessage, err = db.StmtById(queryMessageSQL)
if err != nil {
return
}
d.stmtDeleteById, err = db.StmtById(deleteMessageByIdSQL)
if err != nil {
return
}
d.stmtInsert, err = db.StmtById(insertMessageSQL)
if err != nil {
return
}
return
}
