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
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
package pgdialect
import (
"fmt"
"io"
"reflect"
"github.com/uptrace/bun/schema"
)
func hstoreScanner(typ reflect.Type) schema.ScannerFunc {
kind := typ.Kind()
switch kind {
case reflect.Ptr:
if fn := hstoreScanner(typ.Elem()); fn != nil {
return schema.PtrScanner(fn)
}
case reflect.Map:
// ok:
default:
return nil
}
if typ.Key() == stringType && typ.Elem() == stringType {
return scanMapStringStringValue
}
return func(dest reflect.Value, src interface{}) error {
return fmt.Errorf("bun: Hstore(unsupported %s)", dest.Type())
}
}
func scanMapStringStringValue(dest reflect.Value, src interface{}) error {
dest = reflect.Indirect(dest)
if !dest.CanSet() {
return fmt.Errorf("bun: Scan(non-settable %s)", dest.Type())
}
m, err := decodeMapStringString(src)
if err != nil {
return err
}
dest.Set(reflect.ValueOf(m))
return nil
}
func decodeMapStringString(src interface{}) (map[string]string, error) {
if src == nil {
return nil, nil
}
b, err := toBytes(src)
if err != nil {
return nil, err
}
m := make(map[string]string)
p := newHStoreParser(b)
for {
key, err := p.NextKey()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
value, err := p.NextValue()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
m[key] = value
}
return m, nil
}
|
