/
session_schema.go
313 lines (267 loc) · 7.46 KB
/
session_schema.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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
// Copyright 2016 The Xorm Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package xorm
import (
"bufio"
"context"
"database/sql"
"fmt"
"io"
"os"
"strings"
"github.com/misu99/xorm/dialects"
"github.com/misu99/xorm/internal/utils"
)
// Ping test if database is ok
func (session *Session) Ping() error {
if session.isAutoClose {
defer session.Close()
}
session.engine.logger.Infof("PING DATABASE %v", session.engine.DriverName())
return session.DB().PingContext(session.ctx)
}
// CreateTable create a table according a bean
func (session *Session) CreateTable(bean interface{}) error {
if session.isAutoClose {
defer session.Close()
}
return session.createTable(bean)
}
func (session *Session) createTable(bean interface{}) error {
if err := session.statement.SetRefBean(bean); err != nil {
return err
}
session.statement.RefTable.StoreEngine = session.statement.StoreEngine
session.statement.RefTable.Charset = session.statement.Charset
tableName := session.statement.TableName()
refTable := session.statement.RefTable
if refTable.AutoIncrement != "" && session.engine.dialect.Features().AutoincrMode == dialects.SequenceAutoincrMode {
sqlStr, err := session.engine.dialect.CreateSequenceSQL(context.Background(), session.engine.db, utils.SeqName(tableName))
if err != nil {
return err
}
if _, err := session.exec(sqlStr); err != nil {
return err
}
}
sqlStr, _, err := session.engine.dialect.CreateTableSQL(context.Background(), session.engine.db, refTable, tableName)
if err != nil {
return err
}
if _, err := session.exec(sqlStr); err != nil {
return err
}
return nil
}
// CreateIndexes create indexes
func (session *Session) CreateIndexes(bean interface{}) error {
if session.isAutoClose {
defer session.Close()
}
return session.createIndexes(bean)
}
func (session *Session) createIndexes(bean interface{}) error {
if err := session.statement.SetRefBean(bean); err != nil {
return err
}
sqls := session.statement.GenIndexSQL()
for _, sqlStr := range sqls {
_, err := session.exec(sqlStr)
if err != nil {
return err
}
}
return nil
}
// CreateUniques create uniques
func (session *Session) CreateUniques(bean interface{}) error {
if session.isAutoClose {
defer session.Close()
}
return session.createUniques(bean)
}
func (session *Session) createUniques(bean interface{}) error {
if err := session.statement.SetRefBean(bean); err != nil {
return err
}
sqls := session.statement.GenUniqueSQL()
for _, sqlStr := range sqls {
_, err := session.exec(sqlStr)
if err != nil {
return err
}
}
return nil
}
// DropIndexes drop indexes
func (session *Session) DropIndexes(bean interface{}) error {
if session.isAutoClose {
defer session.Close()
}
return session.dropIndexes(bean)
}
func (session *Session) dropIndexes(bean interface{}) error {
if err := session.statement.SetRefBean(bean); err != nil {
return err
}
sqls := session.statement.GenDelIndexSQL()
for _, sqlStr := range sqls {
_, err := session.exec(sqlStr)
if err != nil {
return err
}
}
return nil
}
// DropTable drop table will drop table if exist, if drop failed, it will return error
func (session *Session) DropTable(beanOrTableName interface{}) error {
if session.isAutoClose {
defer session.Close()
}
return session.dropTable(beanOrTableName)
}
func (session *Session) dropTable(beanOrTableName interface{}) error {
tableName := session.engine.TableName(beanOrTableName)
sqlStr, checkIfExist := session.engine.dialect.DropTableSQL(session.engine.TableName(tableName, true))
if !checkIfExist {
exist, err := session.engine.dialect.IsTableExist(session.getQueryer(), session.ctx, tableName)
if err != nil {
return err
}
checkIfExist = exist
}
if !checkIfExist {
return nil
}
if _, err := session.exec(sqlStr); err != nil {
return err
}
if session.engine.dialect.Features().AutoincrMode == dialects.IncrAutoincrMode {
return nil
}
seqName := utils.SeqName(tableName)
exist, err := session.engine.dialect.IsSequenceExist(session.ctx, session.getQueryer(), seqName)
if err != nil {
return err
}
if !exist {
return nil
}
sqlStr, err = session.engine.dialect.DropSequenceSQL(seqName)
if err != nil {
return err
}
_, err = session.exec(sqlStr)
return err
}
// IsTableExist if a table is exist
func (session *Session) IsTableExist(beanOrTableName interface{}) (bool, error) {
if session.isAutoClose {
defer session.Close()
}
tableName := session.engine.TableName(beanOrTableName)
return session.isTableExist(tableName)
}
func (session *Session) isTableExist(tableName string) (bool, error) {
return session.engine.dialect.IsTableExist(session.getQueryer(), session.ctx, tableName)
}
// IsTableEmpty if table have any records
func (session *Session) IsTableEmpty(bean interface{}) (bool, error) {
if session.isAutoClose {
defer session.Close()
}
return session.isTableEmpty(session.engine.TableName(bean))
}
func (session *Session) isTableEmpty(tableName string) (bool, error) {
var total int64
sqlStr := fmt.Sprintf("select count(*) from %s", session.engine.Quote(session.engine.TableName(tableName, true)))
err := session.queryRow(sqlStr).Scan(&total)
if err != nil {
if err == sql.ErrNoRows {
err = nil
}
return true, err
}
return total == 0, nil
}
func (session *Session) addColumn(colName string) error {
col := session.statement.RefTable.GetColumn(colName)
sql := session.engine.dialect.AddColumnSQL(session.statement.TableName(), col)
_, err := session.exec(sql)
return err
}
func (session *Session) addIndex(tableName, idxName string) error {
index := session.statement.RefTable.Indexes[idxName]
sqlStr := session.engine.dialect.CreateIndexSQL(tableName, index)
_, err := session.exec(sqlStr)
return err
}
func (session *Session) addUnique(tableName, uqeName string) error {
index := session.statement.RefTable.Indexes[uqeName]
sqlStr := session.engine.dialect.CreateIndexSQL(tableName, index)
_, err := session.exec(sqlStr)
return err
}
// ImportFile SQL DDL file
func (session *Session) ImportFile(ddlPath string) ([]sql.Result, error) {
file, err := os.Open(ddlPath)
if err != nil {
return nil, err
}
defer file.Close()
return session.Import(file)
}
// Import SQL DDL from io.Reader
func (session *Session) Import(r io.Reader) ([]sql.Result, error) {
var (
results []sql.Result
lastError error
inSingleQuote bool
startComment bool
)
scanner := bufio.NewScanner(r)
semiColSpliter := func(data []byte, atEOF bool) (advance int, token []byte, err error) {
if atEOF && len(data) == 0 {
return 0, nil, nil
}
oriInSingleQuote := inSingleQuote
for i, b := range data {
if startComment {
if b == '\n' {
startComment = false
}
} else {
if !inSingleQuote && i > 0 && data[i-1] == '-' && data[i] == '-' {
startComment = true
continue
}
if b == '\'' {
inSingleQuote = !inSingleQuote
}
if !inSingleQuote && b == ';' {
return i + 1, data[0:i], nil
}
}
}
// If we're at EOF, we have a final, non-terminated line. Return it.
if atEOF {
return len(data), data, nil
}
inSingleQuote = oriInSingleQuote
// Request more data.
return 0, nil, nil
}
scanner.Split(semiColSpliter)
for scanner.Scan() {
query := strings.Trim(scanner.Text(), " \t\n\r")
if len(query) > 0 {
result, err := session.Exec(query)
if err != nil {
return nil, err
}
results = append(results, result)
}
}
return results, lastError
}