/
bun.go
194 lines (159 loc) · 4.29 KB
/
bun.go
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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
package bun
import (
"bytes"
"context"
"database/sql"
"encoding/json"
"fmt"
"reflect"
"time"
"github.com/uptrace/bun/dialect"
"github.com/uptrace/bun/internal"
"github.com/uptrace/bun/schema"
)
type (
Safe = schema.Safe
Ident = schema.Ident
)
type BaseModel struct{}
type (
BeforeScanHook = schema.BeforeScanHook
AfterScanHook = schema.AfterScanHook
AfterSelectHook = schema.AfterSelectHook
BeforeInsertHook = schema.BeforeInsertHook
AfterInsertHook = schema.AfterInsertHook
BeforeUpdateHook = schema.BeforeUpdateHook
AfterUpdateHook = schema.AfterUpdateHook
BeforeDeleteHook = schema.BeforeDeleteHook
AfterDeleteHook = schema.AfterDeleteHook
)
// type BeforeSelectQueryHook interface {
// BeforeSelectQuery(ctx context.Context, query *SelectQuery) error
// }
// type AfterSelectQueryHook interface {
// AfterSelectQuery(ctx context.Context, query *SelectQuery) error
// }
// type BeforeInsertQueryHook interface {
// BeforeInsertQuery(ctx context.Context, query *InsertQuery) error
// }
// type AfterInsertQueryHook interface {
// AfterInsertQuery(ctx context.Context, query *InsertQuery) error
// }
// type BeforeUpdateQueryHook interface {
// BeforeUpdateQuery(ctx context.Context, query *UpdateQuery) error
// }
// type AfterUpdateQueryHook interface {
// AfterUpdateQuery(ctx context.Context, query *UpdateQuery) error
// }
// type BeforeDeleteQueryHook interface {
// BeforeDeleteQuery(ctx context.Context, query *DeleteQuery) error
// }
// type AfterDeleteQueryHook interface {
// AfterDeleteQuery(ctx context.Context, query *DeleteQuery) error
// }
type BeforeCreateTableQueryHook interface {
BeforeCreateTableQuery(ctx context.Context, query *CreateTableQuery) error
}
type AfterCreateTableQueryHook interface {
AfterCreateTableQuery(ctx context.Context, query *CreateTableQuery) error
}
type BeforeDropTableQueryHook interface {
BeforeDropTableQuery(ctx context.Context, query *DropTableQuery) error
}
type AfterDropTableQueryHook interface {
AfterDropTableQuery(ctx context.Context, query *DropTableQuery) error
}
//------------------------------------------------------------------------------
var jsonNull = []byte("null")
// NullTime is a time.Time wrapper that marshals zero time as JSON null and SQL NULL.
type NullTime struct {
time.Time
}
var (
_ json.Marshaler = (*NullTime)(nil)
_ json.Unmarshaler = (*NullTime)(nil)
_ sql.Scanner = (*NullTime)(nil)
_ schema.QueryAppender = (*NullTime)(nil)
)
func (tm NullTime) MarshalJSON() ([]byte, error) {
if tm.IsZero() {
return jsonNull, nil
}
return tm.Time.MarshalJSON()
}
func (tm *NullTime) UnmarshalJSON(b []byte) error {
if bytes.Equal(b, jsonNull) {
tm.Time = time.Time{}
return nil
}
return tm.Time.UnmarshalJSON(b)
}
func (tm NullTime) AppendQuery(fmter schema.Formatter, b []byte) ([]byte, error) {
if tm.IsZero() {
return dialect.AppendNull(b), nil
}
return dialect.AppendTime(b, tm.Time), nil
}
func (tm *NullTime) Scan(src interface{}) error {
if src == nil {
tm.Time = time.Time{}
return nil
}
switch src := src.(type) {
case []byte:
newtm, err := internal.ParseTime(internal.String(src))
if err != nil {
return err
}
tm.Time = newtm
return nil
case time.Time:
tm.Time = src
return nil
default:
return fmt.Errorf("bun: can't scan %#v into NullTime", src)
}
}
//------------------------------------------------------------------------------
type InValues struct {
slice reflect.Value
err error
}
var _ schema.QueryAppender = InValues{}
func In(slice interface{}) InValues {
v := reflect.ValueOf(slice)
if v.Kind() != reflect.Slice {
return InValues{
err: fmt.Errorf("bun: In(non-slice %T)", slice),
}
}
return InValues{
slice: v,
}
}
func (in InValues) AppendQuery(fmter schema.Formatter, b []byte) (_ []byte, err error) {
if in.err != nil {
return nil, in.err
}
return appendIn(fmter, b, in.slice), nil
}
func appendIn(fmter schema.Formatter, b []byte, slice reflect.Value) []byte {
sliceLen := slice.Len()
for i := 0; i < sliceLen; i++ {
if i > 0 {
b = append(b, ", "...)
}
elem := slice.Index(i)
if elem.Kind() == reflect.Interface {
elem = elem.Elem()
}
if elem.Kind() == reflect.Slice {
b = append(b, '(')
b = appendIn(fmter, b, elem)
b = append(b, ')')
} else {
b = fmter.AppendValue(b, elem)
}
}
return b
}