Пример #1
0
func ctxDriverStmtExec(ctx context.Context, si driver.Stmt, nvdargs []driver.NamedValue) (driver.Result, error) {
	if siCtx, is := si.(driver.StmtExecContext); is {
		return siCtx.ExecContext(ctx, nvdargs)
	}
	dargs, err := namedValueToValue(nvdargs)
	if err != nil {
		return nil, err
	}

	resi, err := si.Exec(dargs)
	if err == nil {
		select {
		default:
		case <-ctx.Done():
			return resi, ctx.Err()
		}
	}
	return resi, err
}
Пример #2
0
func ctxDriverStmtExec(ctx context.Context, si driver.Stmt, nvdargs []driver.NamedValue) (driver.Result, error) {
	if siCtx, is := si.(driver.StmtExecContext); is {
		return siCtx.ExecContext(ctx, nvdargs)
	}
	dargs, err := namedValueToValue(nvdargs)
	if err != nil {
		return nil, err
	}
	if ctx.Done() == context.Background().Done() {
		return si.Exec(dargs)
	}

	type R struct {
		err   error
		panic interface{}
		resi  driver.Result
	}

	rc := make(chan R, 1)
	go func() {
		r := R{}
		defer func() {
			if v := recover(); v != nil {
				r.panic = v
			}
			rc <- r
		}()
		r.resi, r.err = si.Exec(dargs)
	}()
	select {
	case <-ctx.Done():
		go func() {
			<-rc
			close(rc)
		}()
		return nil, ctx.Err()
	case r := <-rc:
		if r.panic != nil {
			panic(r.panic)
		}
		return r.resi, r.err
	}
}
Пример #3
0
func resultFromStatement(si driver.Stmt, args ...interface{}) (Result, error) {
	// -1 means the driver doesn't know how to count the number of
	// placeholders, so we won't sanity check input here and instead let the
	// driver deal with errors.
	if want := si.NumInput(); want != -1 && len(args) != want {
		return nil, fmt.Errorf("sql: expected %d arguments, got %d", want, len(args))
	}

	dargs, err := driverArgs(si, args)
	if err != nil {
		return nil, err
	}

	resi, err := si.Exec(dargs)
	if err != nil {
		return nil, err
	}
	return result{resi}, nil
}