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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
package acudego
import (
"database/sql"
"database/sql/driver"
"encoding/json"
"errors"
"log"
"os"
)
type Tag struct {
Name string `json:"name"`
Place string `json:"place"`
}
func (t *Tag) Scan(value interface{}) error {
return json.Unmarshal([]byte(value.(string)), t)
}
func (t *Tag) Value() (driver.Value, error) {
b, err := json.Marshal(t)
return string(b), err
}
func MainTest() {
os.Remove("json.db")
defer os.Remove("json.db")
db, err := sql.Open(DriverName, "json.db")
if err != nil {
log.Fatal(err)
}
defer db.Close()
_, err = db.Exec(`create table myjsontable (tag jsonb)`)
if err != nil {
log.Fatal(err)
}
stmt, err := db.Prepare("insert into myjsontable(tag) values(?)")
if err != nil {
log.Fatal(err)
}
defer stmt.Close()
_, err = stmt.Exec(`{"name": "name1", "place": "right-here"}`)
if err != nil {
log.Fatal(err)
}
_, err = stmt.Exec(`{"name": "michael", "place": "usa"}`)
if err != nil {
log.Fatal(err)
}
var place string
err = db.QueryRow("select tag->>'place' from myjsontable where tag->>'name' = 'name1'").Scan(&place)
if err != nil {
log.Fatal(err)
}
if place != "right-here" {
log.Fatal(errors.New("expected right-here, got: " + place))
}
var tag Tag
err = db.QueryRow("select tag from myjsontable where tag->>'name' = 'name1'").Scan(&tag)
if err != nil {
log.Fatal(err)
}
if tag.Name != "name1" {
log.Fatal(errors.New("expected name1, got: " + tag.Name))
}
if tag.Place != "right-here" {
log.Fatal(errors.New("expected right-here, got: " + tag.Place))
}
tag.Place = "日本"
_, err = db.Exec(`update myjsontable set tag = ? where tag->>'name' == 'name1'`, &tag)
if err != nil {
log.Fatal(err)
}
err = db.QueryRow("select tag->>'place' from myjsontable where tag->>'name' = 'name1'").Scan(&place)
if err != nil {
log.Fatal(err)
}
if place != "日本" {
log.Fatal(errors.New("expected 日本, got: " + place))
}
}
|