1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
// SPDX-FileCopyrightText: 2026 Stefan Majewsky <majewsky@gmx.net>
// SPDX-License-Identifier: Apache-2.0
package oblast
import (
"fmt"
"reflect"
"strings"
)
// MissingRecordError is returned by [Store.Update] if one of the rows to be updated does not exist in the DB.
type MissingRecordError[R any] struct {
// The record that was provided to [Store.Update],
// but for which no row with the same primary key values could be located.
Record R
plan plan
}
// Error implements the builtin/error interface.
func (e MissingRecordError[R]) Error() string {
keyDescs := make([]string, len(e.plan.PrimaryKeyColumnNames))
v := reflect.ValueOf(e.Record)
for idx, columnName := range e.plan.PrimaryKeyColumnNames {
keyDescs[idx] = fmt.Sprintf("%s = %#v", columnName, v.FieldByIndex(e.plan.IndexByColumnName[columnName]))
}
return "could not UPDATE record that does not exist in the database: " + strings.Join(keyDescs, ", ")
}
// ioError is an error type that contains:
// - (optionally) a main error from an IO operation (e.g. a database read)
// - an auxiliary error from closing or otherwise cleaning up the respective IO handle
//
// This is only used when there is a cleanup error.
// Otherwise, the main error will be returned without being wrapped in this type.
type ioError struct {
MainError error
CleanupError error
CleanupOperation string
}
func newIOError(err error, cleanupOperation string, cleanupErr error) error {
if cleanupErr == nil {
return err
}
return ioError{err, cleanupErr, cleanupOperation}
}
// Error implements the builtin/error interface.
func (e ioError) Error() string {
if e.MainError == nil {
return fmt.Sprintf("during %s(): %s", e.CleanupOperation, e.CleanupError.Error())
} else {
return fmt.Sprintf("%s (additional error during %s(): %s)", e.MainError.Error(), e.CleanupOperation, e.CleanupError.Error())
}
}
// Unwrap implements the interface implied by the documentation of package errors.
func (e ioError) Unwrap() []error {
if e.MainError == nil {
return []error{e.CleanupError}
} else {
return []error{e.MainError, e.CleanupError}
}
}
|
