|
1
|
|
|
<?php |
|
2
|
|
|
namespace yentu\manipulators; |
|
3
|
|
|
|
|
4
|
|
|
use yentu\Parameters; |
|
5
|
|
|
|
|
6
|
|
|
/** |
|
7
|
|
|
* SQLite Database Structure Manipulator for the yentu migration engine. |
|
8
|
|
|
* |
|
9
|
|
|
* @author Ekow Abaka Ainooson |
|
10
|
|
|
*/ |
|
11
|
|
|
class Sqlite extends AbstractDatabaseManipulator |
|
12
|
|
|
{ |
|
13
|
|
|
private $placeholders = []; |
|
14
|
|
|
|
|
15
|
|
|
protected function _addAutoPrimaryKey($details) |
|
16
|
|
|
{ |
|
17
|
|
|
$this->rebuildTableFromDefinition($details['table']); |
|
18
|
|
|
} |
|
19
|
|
|
|
|
20
|
|
|
private function renameColumns(&$columns, $options) |
|
21
|
|
|
{ |
|
22
|
|
|
if (isset($options['renamed_column'])) { |
|
23
|
|
|
foreach ($columns as $i => $column) { |
|
24
|
|
|
if ($options['renamed_column']['from']['name'] === $column) { |
|
25
|
|
|
$columns[$i] = $options['renamed_column']['to']['name']; |
|
26
|
|
|
} |
|
27
|
|
|
} |
|
28
|
|
|
} |
|
29
|
|
|
} |
|
30
|
|
|
|
|
31
|
|
|
/** |
|
32
|
|
|
* Generate a query stub to represent the constraints section of a full |
|
33
|
|
|
* query (usually a CREATE TABLE or ADD COlUMN query). |
|
34
|
|
|
* |
|
35
|
|
|
* @param array<string> $columns An array of the names of columns in the constraint. |
|
36
|
|
|
* @param string $type The type of constraint `FOREIGN KEY`, `UNIQUE` etc. |
|
37
|
|
|
* @param string $name The name of the constraint. |
|
38
|
|
|
* @return string |
|
39
|
|
|
*/ |
|
40
|
|
|
private function getConstraintQuery($columns, $type, $name, $options) |
|
41
|
|
|
{ |
|
42
|
|
|
$this->renameColumns($columns, $options); |
|
43
|
|
|
return ", CONSTRAINT `$name` $type (`" . implode('`, `', $columns) . "`)"; |
|
44
|
|
|
} |
|
45
|
|
|
|
|
46
|
|
|
private function createIndices($indices, $table) |
|
47
|
|
|
{ |
|
48
|
|
|
foreach ($indices as $name => $index) { |
|
49
|
|
|
$this->_addIndex(['name' => $name, 'table' => $table, 'columns' => $index['columns']]); |
|
50
|
|
|
} |
|
51
|
|
|
} |
|
52
|
|
|
|
|
53
|
|
|
/** |
|
54
|
|
|
* Generate all the constraint queries of a table. |
|
55
|
|
|
* This function is used when executing UNIQUE or PRIMARY KEY constraints. |
|
56
|
|
|
* |
|
57
|
|
|
* @param array<array> $constraints An array of details of all constraints. |
|
58
|
|
|
* @param string $type The type of constraint 'FOREIGN KEY' ... etc. |
|
59
|
|
|
* @return string |
|
60
|
|
|
*/ |
|
61
|
|
|
private function generateConstraintsQueries($constraints, $type, $options) |
|
62
|
|
|
{ |
|
63
|
|
|
$query = ''; |
|
64
|
|
|
foreach ($constraints as $name => $constraint) { |
|
65
|
|
|
$query .= $this->getConstraintQuery($constraint['columns'], $type, $name, $options); |
|
66
|
|
|
} |
|
67
|
|
|
return $query; |
|
68
|
|
|
} |
|
69
|
|
|
|
|
70
|
|
|
/** |
|
71
|
|
|
* Generate the query for a foreign key constraint. |
|
72
|
|
|
* |
|
73
|
|
|
* @param array<array> $constraintDetails |
|
74
|
|
|
* @return string |
|
75
|
|
|
*/ |
|
76
|
|
|
private function getFKConstraintQuery($constraints, $options) |
|
77
|
|
|
{ |
|
78
|
|
|
$query = ''; |
|
79
|
|
|
foreach ($constraints as $name => $constraint) { |
|
80
|
|
|
$this->renameColumns($constraint['foreign_columns'], $options); |
|
81
|
|
|
$query .= $this->getConstraintQuery($constraint['columns'], 'FOREIGN KEY', $name, $options) . |
|
82
|
|
|
sprintf( |
|
83
|
|
|
" REFERENCES `{$constraint['foreign_table']}` (`" . implode('`, `', $constraint['foreign_columns']) . "`) %s %s", |
|
84
|
|
|
isset($constraint['on_delete']) ? "ON DELETE {$constraint['on_delete']}" : '', |
|
85
|
|
|
isset($constraint['on_update']) ? "ON UPDATE {$constraint['on_update']}" : '' |
|
86
|
|
|
); |
|
87
|
|
|
} |
|
88
|
|
|
return $query; |
|
89
|
|
|
} |
|
90
|
|
|
|
|
91
|
|
|
/** |
|
92
|
|
|
* Generate an SQL query field list to be used in a query for moving data |
|
93
|
|
|
* between a table and its altered counterpart. |
|
94
|
|
|
* This function is called when reconstructing SQLite tables. |
|
95
|
|
|
* New columns would be ignored as their default value would be appended. |
|
96
|
|
|
* Renamed columns would return the old name of the column with the new |
|
97
|
|
|
* name as an alias. Fields which are not altered in any way are returned |
|
98
|
|
|
* just as they are. |
|
99
|
|
|
* |
|
100
|
|
|
* @param array $column An array containing information about the column |
|
101
|
|
|
* @param array $options Contains information about the current operation. |
|
102
|
|
|
* Through this variable we can know whether a new column has been |
|
103
|
|
|
* added or an existing column has been renamed. |
|
104
|
|
|
* @param string $comma The comma state. Helps in comma placements for |
|
105
|
|
|
* correct query generation. |
|
106
|
|
|
* @return string |
|
107
|
|
|
*/ |
|
108
|
|
|
private function getFieldListColumn($column, $options, $comma) |
|
109
|
|
|
{ |
|
110
|
|
|
$return = false; |
|
111
|
|
|
if (isset($options['new_column'])) { |
|
112
|
|
|
if ($column['name'] == $options['new_column']['name']) { |
|
113
|
|
|
$return = ''; |
|
114
|
|
|
} |
|
115
|
|
|
} else if (isset($options['renamed_column'])) { |
|
116
|
|
|
if ($column['name'] == $options['renamed_column']['to']['name']) { |
|
117
|
|
|
$return = $comma . "`{$options['renamed_column']['from']['name']}` as `{$options['renamed_column']['to']['name']}`"; |
|
118
|
|
|
} |
|
119
|
|
|
} |
|
120
|
|
|
|
|
121
|
|
|
if ($return === false) { |
|
122
|
|
|
$return = $comma . "`{$column['name']}`"; |
|
123
|
|
|
} |
|
124
|
|
|
return $return; |
|
125
|
|
|
} |
|
126
|
|
|
|
|
127
|
|
|
/** |
|
128
|
|
|
* Rebuids an entire table based on the current state of yentu's schema |
|
129
|
|
|
* description. |
|
130
|
|
|
* In order to work around SQLite's lack of full table altering routines, |
|
131
|
|
|
* this function does the work of creating new tables based on altered |
|
132
|
|
|
* versions of old tables and moves data between the old and new tables. |
|
133
|
|
|
* It takes advantage of the fact that yentu maintains an internal schema |
|
134
|
|
|
* description of all operations performed. |
|
135
|
|
|
* |
|
136
|
|
|
* @param string $tableName The name of the table to rebuild. |
|
137
|
|
|
* @param array $options An array which contains extra details about the |
|
138
|
|
|
* operation which led to the rebuilding of the table. Currently the |
|
139
|
|
|
* only options that are of interest are those that are passed when |
|
140
|
|
|
* adding new columns and those that are passed when modifying existing |
|
141
|
|
|
* columns. |
|
142
|
|
|
*/ |
|
143
|
|
|
private function rebuildTableFromDefinition($tableName, $options = []) |
|
144
|
|
|
{ |
|
145
|
|
|
$this->query("PRAGMA foreign_keys=OFF"); |
|
146
|
|
|
$table = Parameters::wrap( |
|
147
|
|
|
$this->getDescription()->getTable(['table' => $tableName, 'schema' => false]), |
|
148
|
|
|
['auto_increment'] |
|
149
|
|
|
); |
|
150
|
|
|
$dummyTable = "__yentu_{$table['name']}"; |
|
151
|
|
|
$query = "CREATE TABLE `$dummyTable` ("; |
|
152
|
|
|
$fieldList = ''; |
|
153
|
|
|
$comma = ''; |
|
154
|
|
|
$primaryKeyAdded = false; |
|
155
|
|
|
$primaryKeyColumn = ''; |
|
156
|
|
|
|
|
157
|
|
|
if ($table['auto_increment'] && isset($table['primary_key'][0])) { |
|
158
|
|
|
$key = $table['primary_key'][0]; |
|
159
|
|
|
$primaryKeyColumn = $key['columns'][0]; |
|
160
|
|
|
} |
|
161
|
|
|
if (count($table['columns'])) { |
|
162
|
|
|
foreach ($table['columns'] as $column) { |
|
163
|
|
|
$query .= $comma . $this->getColumnDef($column); |
|
164
|
|
|
$fieldList .= $this->getFieldListColumn($column, $options, $comma); |
|
165
|
|
|
if ($column['name'] === $primaryKeyColumn) { |
|
166
|
|
|
$query .= ' PRIMARY KEY AUTOINCREMENT'; |
|
167
|
|
|
$primaryKeyAdded = true; |
|
168
|
|
|
} |
|
169
|
|
|
$comma = ', '; |
|
170
|
|
|
} |
|
171
|
|
|
} else { |
|
172
|
|
|
// put back the placeholder column so the table can stand |
|
173
|
|
|
$query .= '`__yentu_placeholder_col` INTEGER'; |
|
174
|
|
|
} |
|
175
|
|
|
|
|
176
|
|
|
if (!$primaryKeyAdded && isset($table['primary_key'])) { |
|
177
|
|
|
$query .= $this->generateConstraintsQueries($table['primary_key'], 'PRIMARY KEY', $options); |
|
178
|
|
|
} |
|
179
|
|
|
$query .= $this->generateConstraintsQueries($table['unique_keys'], 'UNIQUE', $options); |
|
180
|
|
|
$query .= $this->getFKConstraintQuery($table['foreign_keys'], $options); |
|
181
|
|
|
|
|
182
|
|
|
$query .= ')'; |
|
183
|
|
|
|
|
184
|
|
|
$this->query($query); |
|
185
|
|
|
|
|
186
|
|
|
if (isset($options['new_column'])) { |
|
187
|
|
|
$this->query("INSERT INTO `$dummyTable` SELECT {$fieldList} , ? FROM `{$table['name']}`", $options['new_column']['default']); |
|
188
|
|
|
} else if (count($table['columns']) > 0) { |
|
189
|
|
|
$this->query("INSERT INTO `$dummyTable` SELECT {$fieldList} FROM `{$table['name']}`"); |
|
190
|
|
|
} |
|
191
|
|
|
|
|
192
|
|
|
$this->query("DROP TABLE `{$table['name']}`"); |
|
193
|
|
|
$this->query("ALTER TABLE `$dummyTable` RENAME TO `{$table['name']}`"); |
|
194
|
|
|
$this->createIndices($table['indices'], $table['name']); |
|
195
|
|
|
$this->query("PRAGMA foreign_keys=ON"); |
|
196
|
|
|
} |
|
197
|
|
|
|
|
198
|
|
|
/** |
|
199
|
|
|
* Generate an SQL query stub which represent a column definition. |
|
200
|
|
|
* |
|
201
|
|
|
* @param array $details |
|
202
|
|
|
* @return string |
|
203
|
|
|
*/ |
|
204
|
|
|
private function getColumnDef($details) |
|
205
|
|
|
{ |
|
206
|
|
|
$details = Parameters::wrap($details, ['length', 'default']); |
|
207
|
|
|
return trim(sprintf( |
|
208
|
|
|
"`%s` %s %s %s", |
|
209
|
|
|
$details['name'], |
|
210
|
|
|
$this->convertTypes( |
|
211
|
|
|
$details['type'], |
|
212
|
|
|
self::CONVERT_TO_DRIVER, |
|
213
|
|
|
$details['length'] |
|
214
|
|
|
), |
|
215
|
|
|
$details['nulls'] === false ? 'NOT NULL' : '', |
|
216
|
|
|
$details['default'] === null ? null : "DEFAULT {$details['default']}" |
|
217
|
|
|
)); |
|
218
|
|
|
} |
|
219
|
|
|
|
|
220
|
|
|
protected function _addColumn($details) |
|
221
|
|
|
{ |
|
222
|
|
|
if (isset($this->placeholders[$details['table']])) { |
|
223
|
|
|
$this->query("DROP TABLE `{$details['table']}`"); |
|
224
|
|
|
$this->query(sprintf("CREATE TABLE `%s` (%s)", |
|
225
|
|
|
$details['table'], |
|
226
|
|
|
$this->getColumnDef($details) |
|
227
|
|
|
) |
|
228
|
|
|
); |
|
229
|
|
|
unset($this->placeholders[$details['table']]); |
|
230
|
|
|
} else if ($details['nulls'] === null || $details['nulls'] == true || ($details['nulls'] === false && $details['default'] !== null)) { |
|
231
|
|
|
$this->query("ALTER TABLE `{$details['table']}` ADD COLUMN " . $this->getColumnDef($details)); |
|
232
|
|
|
} else { |
|
233
|
|
|
$this->rebuildTableFromDefinition($details['table'], ['new_column' => $details]); |
|
234
|
|
|
} |
|
235
|
|
|
} |
|
236
|
|
|
|
|
237
|
|
|
protected function _addForeignKey($details) |
|
238
|
|
|
{ |
|
239
|
|
|
$this->rebuildTableFromDefinition($details['table']); |
|
240
|
|
|
} |
|
241
|
|
|
|
|
242
|
|
|
protected function _addIndex($details) |
|
243
|
|
|
{ |
|
244
|
|
|
$this->query("CREATE INDEX `{$details['name']}` ON `{$details['table']}` (`" . implode("`, `", $details['columns']) . "`)"); |
|
245
|
|
|
} |
|
246
|
|
|
|
|
247
|
|
|
protected function _addPrimaryKey($details) |
|
248
|
|
|
{ |
|
249
|
|
|
$this->rebuildTableFromDefinition($details['table']); |
|
250
|
|
|
} |
|
251
|
|
|
|
|
252
|
|
|
protected function _addSchema($name) |
|
253
|
|
|
{ |
|
254
|
|
|
|
|
255
|
|
|
|
|
256
|
|
|
} |
|
257
|
|
|
|
|
258
|
|
|
protected function _addTable($details) |
|
259
|
|
|
{ |
|
260
|
|
|
$this->query("CREATE TABLE `{$details['name']}` (`__yentu_placeholder_col` INTEGER)"); |
|
261
|
|
|
$this->placeholders[$details['name']] = true; |
|
262
|
|
|
} |
|
263
|
|
|
|
|
264
|
|
|
protected function _addUniqueKey($details) |
|
265
|
|
|
{ |
|
266
|
|
|
$this->rebuildTableFromDefinition($details['table']); |
|
267
|
|
|
} |
|
268
|
|
|
|
|
269
|
|
|
protected function _addView($details) |
|
270
|
|
|
{ |
|
271
|
|
|
$this->query("CREATE VIEW `{$details['name']}` AS {$details['definition']}"); |
|
272
|
|
|
} |
|
273
|
|
|
|
|
274
|
|
|
protected function _changeColumnDefault($details) |
|
275
|
|
|
{ |
|
276
|
|
|
$this->rebuildTableFromDefinition($details['to']['table']); |
|
277
|
|
|
} |
|
278
|
|
|
|
|
279
|
|
|
protected function _changeColumnName($details) |
|
280
|
|
|
{ |
|
281
|
|
|
$this->rebuildTableFromDefinition($details['to']['table'], ['renamed_column' => $details]); |
|
282
|
|
|
} |
|
283
|
|
|
|
|
284
|
|
|
protected function _changeColumnNulls($details) |
|
285
|
|
|
{ |
|
286
|
|
|
$this->rebuildTableFromDefinition($details['to']['table']); |
|
287
|
|
|
} |
|
288
|
|
|
|
|
289
|
|
|
protected function _changeViewDefinition($details) |
|
290
|
|
|
{ |
|
291
|
|
|
$this->query("DROP VIEW `{$details['to']['name']}`"); |
|
292
|
|
|
$this->_addView($details['to']); |
|
293
|
|
|
} |
|
294
|
|
|
|
|
295
|
|
|
protected function _dropAutoPrimaryKey($details) |
|
296
|
|
|
{ |
|
297
|
|
|
$this->rebuildTableFromDefinition($details['table']); |
|
298
|
|
|
} |
|
299
|
|
|
|
|
300
|
|
|
protected function _dropColumn($details) |
|
301
|
|
|
{ |
|
302
|
|
|
$this->rebuildTableFromDefinition($details['table']); |
|
303
|
|
|
|
|
304
|
|
|
} |
|
305
|
|
|
|
|
306
|
|
|
protected function _dropForeignKey($details) |
|
307
|
|
|
{ |
|
308
|
|
|
$this->rebuildTableFromDefinition($details['table']); |
|
309
|
|
|
} |
|
310
|
|
|
|
|
311
|
|
|
protected function _dropIndex($details) |
|
312
|
|
|
{ |
|
313
|
|
|
$this->query("DROP INDEX `{$details['name']}`"); |
|
314
|
|
|
} |
|
315
|
|
|
|
|
316
|
|
|
protected function _dropPrimaryKey($details) |
|
317
|
|
|
{ |
|
318
|
|
|
$this->rebuildTableFromDefinition($details['table']); |
|
319
|
|
|
} |
|
320
|
|
|
|
|
321
|
|
|
protected function _dropSchema($name) |
|
322
|
|
|
{ |
|
323
|
|
|
|
|
324
|
|
|
|
|
325
|
|
|
} |
|
326
|
|
|
|
|
327
|
|
|
protected function _dropTable($details) |
|
328
|
|
|
{ |
|
329
|
|
|
$this->query("DROP TABLE `{$details['name']}`"); |
|
330
|
|
|
} |
|
331
|
|
|
|
|
332
|
|
|
protected function _dropUniqueKey($details) |
|
333
|
|
|
{ |
|
334
|
|
|
$this->rebuildTableFromDefinition($details['table']); |
|
335
|
|
|
} |
|
336
|
|
|
|
|
337
|
|
|
protected function _dropView($details) |
|
338
|
|
|
{ |
|
339
|
|
|
$this->query("DROP VIEW `{$details['name']}`"); |
|
340
|
|
|
} |
|
341
|
|
|
|
|
342
|
|
|
public function convertTypes($type, $direction, $length) |
|
343
|
|
|
{ |
|
344
|
|
|
$destinationType = null; |
|
345
|
|
|
$types = [ |
|
346
|
|
|
['integer', 'integer'], |
|
347
|
|
|
['text', 'string'], |
|
348
|
|
|
['real', 'double'], |
|
349
|
|
|
['text', 'timestamp'], |
|
350
|
|
|
['text', 'text'], |
|
351
|
|
|
['blob', 'blob'], |
|
352
|
|
|
['integer', 'boolean'], |
|
353
|
|
|
['integer', 'bigint'], |
|
354
|
|
|
['text', 'date'] |
|
355
|
|
|
]; |
|
356
|
|
|
|
|
357
|
|
|
$type = strtolower($type); |
|
358
|
|
|
|
|
359
|
|
|
foreach ($types as $testType) { |
|
360
|
|
|
if ($direction === self::CONVERT_TO_DRIVER && $testType[1] === $type) { |
|
361
|
|
|
$destinationType = $testType[0]; |
|
362
|
|
|
break; |
|
363
|
|
|
} else if ($direction === self::CONVERT_TO_YENTU && $testType[0] === $type) { |
|
364
|
|
|
$destinationType = $testType[1]; |
|
365
|
|
|
break; |
|
366
|
|
|
} |
|
367
|
|
|
} |
|
368
|
|
|
|
|
369
|
|
|
if ($destinationType == '') { |
|
370
|
|
|
throw new \yentu\exceptions\DatabaseManipulatorException("Invalid data type {$type} requested"); |
|
371
|
|
|
} else if ($destinationType == 'text') { |
|
372
|
|
|
$destinationType .= $length === null ? '' : "($length)"; |
|
373
|
|
|
} |
|
374
|
|
|
return $destinationType; |
|
375
|
|
|
} |
|
376
|
|
|
|
|
377
|
|
|
protected function _changeTableName($details) |
|
378
|
|
|
{ |
|
379
|
|
|
$this->query( |
|
380
|
|
|
sprintf( |
|
381
|
|
|
"ALTER TABLE `%s` RENAME TO `%s`", |
|
382
|
|
|
$details['from']['name'], $details['to']['name'] |
|
383
|
|
|
) |
|
384
|
|
|
); |
|
385
|
|
|
} |
|
386
|
|
|
|
|
387
|
|
|
} |
|
388
|
|
|
|
|
389
|
|
|
|