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source: github/program/lib/MDB2/Driver/Reverse/mysqli.php @ 95ebbc98

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Last change on this file since 95ebbc98 was 95ebbc98, checked in by till <till@…>, 5 years ago
putting latest MDB2 into SVN adding MDB2 drivers for mssql, mysql, mysqli, pgsql, sqlite
Property mode set to `100644`
File size: 24.8 KB

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1	<?php
2	// +----------------------------------------------------------------------+
3	// \| PHP versions 4 and 5 \|
4	// +----------------------------------------------------------------------+
5	// \| Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox, \|
6	// \| Stig. S. Bakken, Lukas Smith \|
7	// \| All rights reserved. \|
8	// +----------------------------------------------------------------------+
9	// \| MDB2 is a merge of PEAR DB and Metabases that provides a unified DB \|
10	// \| API as well as database abstraction for PHP applications. \|
11	// \| This LICENSE is in the BSD license style. \|
12	// \| \|
13	// \| Redistribution and use in source and binary forms, with or without \|
14	// \| modification, are permitted provided that the following conditions \|
15	// \| are met: \|
16	// \| \|
17	// \| Redistributions of source code must retain the above copyright \|
18	// \| notice, this list of conditions and the following disclaimer. \|
19	// \| \|
20	// \| Redistributions in binary form must reproduce the above copyright \|
21	// \| notice, this list of conditions and the following disclaimer in the \|
22	// \| documentation and/or other materials provided with the distribution. \|
23	// \| \|
24	// \| Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, \|
25	// \| Lukas Smith nor the names of his contributors may be used to endorse \|
26	// \| or promote products derived from this software without specific prior\|
27	// \| written permission. \|
28	// \| \|
29	// \| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \|
30	// \| "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT \|
31	// \| LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS \|
32	// \| FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE \|
33	// \| REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, \|
34	// \| INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, \|
35	// \| BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS\|
36	// \| OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED \|
37	// \| AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT \|
38	// \| LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY\|
39	// \| WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE \|
40	// \| POSSIBILITY OF SUCH DAMAGE. \|
41	// +----------------------------------------------------------------------+
42	// \| Author: Lukas Smith <smith@pooteeweet.org> \|
43	// +----------------------------------------------------------------------+
44	//
45	// $Id: mysqli.php,v 1.69 2007/11/25 13:38:29 quipo Exp $
46	//
47
48	require_once 'MDB2/Driver/Reverse/Common.php';
49
50	/**
51	* MDB2 MySQLi driver for the schema reverse engineering module
52	*
53	* @package MDB2
54	* @category Database
55	* @author Lukas Smith <smith@pooteeweet.org>
56	* @author Lorenzo Alberton <l.alberton@quipo.it>
57	*/
58	class MDB2_Driver_Reverse_mysqli extends MDB2_Driver_Reverse_Common
59	{
60	/**
61	* Array for converting MYSQLI_*_FLAG constants to text values
62	* @var array
63	* @access public
64	*/
65	var $flags = array(
66	MYSQLI_NOT_NULL_FLAG => 'not_null',
67	MYSQLI_PRI_KEY_FLAG => 'primary_key',
68	MYSQLI_UNIQUE_KEY_FLAG => 'unique_key',
69	MYSQLI_MULTIPLE_KEY_FLAG => 'multiple_key',
70	MYSQLI_BLOB_FLAG => 'blob',
71	MYSQLI_UNSIGNED_FLAG => 'unsigned',
72	MYSQLI_ZEROFILL_FLAG => 'zerofill',
73	MYSQLI_AUTO_INCREMENT_FLAG => 'auto_increment',
74	MYSQLI_TIMESTAMP_FLAG => 'timestamp',
75	MYSQLI_SET_FLAG => 'set',
76	// MYSQLI_NUM_FLAG => 'numeric', // unnecessary
77	// MYSQLI_PART_KEY_FLAG => 'multiple_key', // duplicatvie
78	MYSQLI_GROUP_FLAG => 'group_by'
79	);
80
81	/**
82	* Array for converting MYSQLI_TYPE_* constants to text values
83	* @var array
84	* @access public
85	*/
86	var $types = array(
87	MYSQLI_TYPE_DECIMAL => 'decimal',
88	246 => 'decimal',
89	MYSQLI_TYPE_TINY => 'tinyint',
90	MYSQLI_TYPE_SHORT => 'int',
91	MYSQLI_TYPE_LONG => 'int',
92	MYSQLI_TYPE_FLOAT => 'float',
93	MYSQLI_TYPE_DOUBLE => 'double',
94	// MYSQLI_TYPE_NULL => 'DEFAULT NULL', // let flags handle it
95	MYSQLI_TYPE_TIMESTAMP => 'timestamp',
96	MYSQLI_TYPE_LONGLONG => 'bigint',
97	MYSQLI_TYPE_INT24 => 'mediumint',
98	MYSQLI_TYPE_DATE => 'date',
99	MYSQLI_TYPE_TIME => 'time',
100	MYSQLI_TYPE_DATETIME => 'datetime',
101	MYSQLI_TYPE_YEAR => 'year',
102	MYSQLI_TYPE_NEWDATE => 'date',
103	MYSQLI_TYPE_ENUM => 'enum',
104	MYSQLI_TYPE_SET => 'set',
105	MYSQLI_TYPE_TINY_BLOB => 'tinyblob',
106	MYSQLI_TYPE_MEDIUM_BLOB => 'mediumblob',
107	MYSQLI_TYPE_LONG_BLOB => 'longblob',
108	MYSQLI_TYPE_BLOB => 'blob',
109	MYSQLI_TYPE_VAR_STRING => 'varchar',
110	MYSQLI_TYPE_STRING => 'char',
111	MYSQLI_TYPE_GEOMETRY => 'geometry',
112	);
113
114	// {{{ getTableFieldDefinition()
115
116	/**
117	* Get the structure of a field into an array
118	*
119	* @param string $table_name name of table that should be used in method
120	* @param string $field_name name of field that should be used in method
121	* @return mixed data array on success, a MDB2 error on failure
122	* @access public
123	*/
124	function getTableFieldDefinition($table_name, $field_name)
125	{
126	$db =& $this->getDBInstance();
127	if (PEAR::isError($db)) {
128	return $db;
129	}
130
131	$result = $db->loadModule('Datatype', null, true);
132	if (PEAR::isError($result)) {
133	return $result;
134	}
135
136	list($schema, $table) = $this->splitTableSchema($table_name);
137
138	$table = $db->quoteIdentifier($table, true);
139	$query = "SHOW FULL COLUMNS FROM $table LIKE ".$db->quote($field_name);
140	$columns = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
141	if (PEAR::isError($columns)) {
142	return $columns;
143	}
144	foreach ($columns as $column) {
145	$column = array_change_key_case($column, CASE_LOWER);
146	$column['name'] = $column['field'];
147	unset($column['field']);
148	if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
149	if ($db->options['field_case'] == CASE_LOWER) {
150	$column['name'] = strtolower($column['name']);
151	} else {
152	$column['name'] = strtoupper($column['name']);
153	}
154	} else {
155	$column = array_change_key_case($column, $db->options['field_case']);
156	}
157	if ($field_name == $column['name']) {
158	$mapped_datatype = $db->datatype->mapNativeDatatype($column);
159	if (PEAR::isError($mapped_datatype)) {
160	return $mapped_datatype;
161	}
162	list($types, $length, $unsigned, $fixed) = $mapped_datatype;
163	$notnull = false;
164	if (empty($column['null']) \|\| $column['null'] !== 'YES') {
165	$notnull = true;
166	}
167	$default = false;
168	if (array_key_exists('default', $column)) {
169	$default = $column['default'];
170	if (is_null($default) && $notnull) {
171	$default = '';
172	}
173	}
174	$autoincrement = false;
175	if (!empty($column['extra']) && $column['extra'] == 'auto_increment') {
176	$autoincrement = true;
177	}
178	$collate = null;
179	if (!empty($column['collation'])) {
180	$collate = $column['collation'];
181	$charset = preg_replace('/(.+?)(_.+)?/', '$1', $collate);
182	}
183
184	$definition[0] = array(
185	'notnull' => $notnull,
186	'nativetype' => preg_replace('/^([a-z]+)[^a-z].*/i', '\\1', $column['type'])
187	);
188	if (!is_null($length)) {
189	$definition[0]['length'] = $length;
190	}
191	if (!is_null($unsigned)) {
192	$definition[0]['unsigned'] = $unsigned;
193	}
194	if (!is_null($fixed)) {
195	$definition[0]['fixed'] = $fixed;
196	}
197	if ($default !== false) {
198	$definition[0]['default'] = $default;
199	}
200	if ($autoincrement !== false) {
201	$definition[0]['autoincrement'] = $autoincrement;
202	}
203	if (!is_null($collate)) {
204	$definition[0]['collate'] = $collate;
205	$definition[0]['charset'] = $charset;
206	}
207	foreach ($types as $key => $type) {
208	$definition[$key] = $definition[0];
209	if ($type == 'clob' \|\| $type == 'blob') {
210	unset($definition[$key]['default']);
211	} elseif ($type == 'timestamp' && $notnull && empty($definition[$key]['default'])) {
212	$definition[$key]['default'] = '0000-00-00 00:00:00';
213	}
214	$definition[$key]['type'] = $type;
215	$definition[$key]['mdb2type'] = $type;
216	}
217	return $definition;
218	}
219	}
220
221	return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
222	'it was not specified an existing table column', __FUNCTION__);
223	}
224
225	// }}}
226	// {{{ getTableIndexDefinition()
227
228	/**
229	* Get the structure of an index into an array
230	*
231	* @param string $table_name name of table that should be used in method
232	* @param string $index_name name of index that should be used in method
233	* @return mixed data array on success, a MDB2 error on failure
234	* @access public
235	*/
236	function getTableIndexDefinition($table_name, $index_name)
237	{
238	$db =& $this->getDBInstance();
239	if (PEAR::isError($db)) {
240	return $db;
241	}
242
243	list($schema, $table) = $this->splitTableSchema($table_name);
244
245	$table = $db->quoteIdentifier($table, true);
246	$query = "SHOW INDEX FROM $table /!50002 WHERE Key_name = %s /";
247	$index_name_mdb2 = $db->getIndexName($index_name);
248	$result = $db->queryRow(sprintf($query, $db->quote($index_name_mdb2)));
249	if (!PEAR::isError($result) && !is_null($result)) {
250	// apply 'idxname_format' only if the query succeeded, otherwise
251	// fallback to the given $index_name, without transformation
252	$index_name = $index_name_mdb2;
253	}
254	$result = $db->query(sprintf($query, $db->quote($index_name)));
255	if (PEAR::isError($result)) {
256	return $result;
257	}
258	$colpos = 1;
259	$definition = array();
260	while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
261	$row = array_change_key_case($row, CASE_LOWER);
262	$key_name = $row['key_name'];
263	if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
264	if ($db->options['field_case'] == CASE_LOWER) {
265	$key_name = strtolower($key_name);
266	} else {
267	$key_name = strtoupper($key_name);
268	}
269	}
270	if ($index_name == $key_name) {
271	if (!$row['non_unique']) {
272	return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
273	$index_name . ' is not an existing table index', __FUNCTION__);
274	}
275	$column_name = $row['column_name'];
276	if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
277	if ($db->options['field_case'] == CASE_LOWER) {
278	$column_name = strtolower($column_name);
279	} else {
280	$column_name = strtoupper($column_name);
281	}
282	}
283	$definition['fields'][$column_name] = array(
284	'position' => $colpos++
285	);
286	if (!empty($row['collation'])) {
287	$definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'A'
288	? 'ascending' : 'descending');
289	}
290	}
291	}
292	$result->free();
293	if (empty($definition['fields'])) {
294	return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
295	$index_name . ' is not an existing table index', __FUNCTION__);
296	}
297	return $definition;
298	}
299
300	// }}}
301	// {{{ getTableConstraintDefinition()
302
303	/**
304	* Get the structure of a constraint into an array
305	*
306	* @param string $table_name name of table that should be used in method
307	* @param string $constraint_name name of constraint that should be used in method
308	* @return mixed data array on success, a MDB2 error on failure
309	* @access public
310	*/
311	function getTableConstraintDefinition($table_name, $constraint_name)
312	{
313	$db =& $this->getDBInstance();
314	if (PEAR::isError($db)) {
315	return $db;
316	}
317
318	list($schema, $table) = $this->splitTableSchema($table_name);
319	$constraint_name_original = $constraint_name;
320
321	$table = $db->quoteIdentifier($table, true);
322	$query = "SHOW INDEX FROM $table /!50002 WHERE Key_name = %s /";
323	if (strtolower($constraint_name) != 'primary') {
324	$constraint_name_mdb2 = $db->getIndexName($constraint_name);
325	$result = $db->queryRow(sprintf($query, $db->quote($constraint_name_mdb2)));
326	if (!PEAR::isError($result) && !is_null($result)) {
327	// apply 'idxname_format' only if the query succeeded, otherwise
328	// fallback to the given $index_name, without transformation
329	$constraint_name = $constraint_name_mdb2;
330	}
331	}
332	$result = $db->query(sprintf($query, $db->quote($constraint_name)));
333	if (PEAR::isError($result)) {
334	return $result;
335	}
336	$colpos = 1;
337	//default values, eventually overridden
338	$definition = array(
339	'primary' => false,
340	'unique' => false,
341	'foreign' => false,
342	'check' => false,
343	'fields' => array(),
344	'references' => array(
345	'table' => '',
346	'fields' => array(),
347	),
348	'onupdate' => '',
349	'ondelete' => '',
350	'match' => '',
351	'deferrable' => false,
352	'initiallydeferred' => false,
353	);
354	while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
355	$row = array_change_key_case($row, CASE_LOWER);
356	$key_name = $row['key_name'];
357	if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
358	if ($db->options['field_case'] == CASE_LOWER) {
359	$key_name = strtolower($key_name);
360	} else {
361	$key_name = strtoupper($key_name);
362	}
363	}
364	if ($constraint_name == $key_name) {
365	if ($row['non_unique']) {
366	//FOREIGN KEY?
367	$query = 'SHOW CREATE TABLE '. $db->escape($table);
368	$constraint = $db->queryOne($query, 'text', 1);
369	if (!PEAR::isError($constraint) && !empty($constraint)) {
370	if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
371	if ($db->options['field_case'] == CASE_LOWER) {
372	$constraint = strtolower($constraint);
373	} else {
374	$constraint = strtoupper($constraint);
375	}
376	}
377	$pattern = '/\bCONSTRAINT\s+'.$constraint_name.'\s+FOREIGN KEY\s+\(([^\)]+)\) \bREFERENCES\b ([^ ]+) \(([^\)]+)\)/i';
378	if (!preg_match($pattern, str_replace('`', '', $constraint), $matches)) {
379	//fallback to original constraint name
380	$pattern = '/\bCONSTRAINT\s+'.$constraint_name_original.'\s+FOREIGN KEY\s+\(([^\)]+)\) \bREFERENCES\b ([^ ]+) \(([^\)]+)\)/i';
381	}
382	if (preg_match($pattern, str_replace('`', '', $constraint), $matches)) {
383	$definition['foreign'] = true;
384	$column_names = explode(',', $matches[1]);
385	$referenced_cols = explode(',', $matches[3]);
386	$definition['references'] = array(
387	'table' => $matches[2],
388	'fields' => array(),
389	);
390	$colpos = 1;
391	foreach ($column_names as $column_name) {
392	$definition['fields'][trim($column_name)] = array(
393	'position' => $colpos++
394	);
395	}
396	$colpos = 1;
397	foreach ($referenced_cols as $column_name) {
398	$definition['references']['fields'][trim($column_name)] = array(
399	'position' => $colpos++
400	);
401	}
402	$definition['onupdate'] = 'NO ACTION';
403	$definition['ondelete'] = 'NO ACTION';
404	$definition['match'] = 'SIMPLE';
405	return $definition;
406	}
407	}
408
409	return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
410	$constraint_name . ' is not an existing table constraint', __FUNCTION__);
411	}
412	if ($row['key_name'] == 'PRIMARY') {
413	$definition['primary'] = true;
414	} elseif (!$row['non_unique']) {
415	$definition['unique'] = true;
416	}
417	$column_name = $row['column_name'];
418	if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
419	if ($db->options['field_case'] == CASE_LOWER) {
420	$column_name = strtolower($column_name);
421	} else {
422	$column_name = strtoupper($column_name);
423	}
424	}
425	$definition['fields'][$column_name] = array(
426	'position' => $colpos++
427	);
428	if (!empty($row['collation'])) {
429	$definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'A'
430	? 'ascending' : 'descending');
431	}
432	}
433	}
434	$result->free();
435	if (empty($definition['fields'])) {
436	return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
437	$constraint_name . ' is not an existing table constraint', __FUNCTION__);
438	}
439	return $definition;
440	}
441
442	// }}}
443	// {{{ getTriggerDefinition()
444
445	/**
446	* Get the structure of a trigger into an array
447	*
448	* EXPERIMENTAL
449	*
450	* WARNING: this function is experimental and may change the returned value
451	* at any time until labelled as non-experimental
452	*
453	* @param string $trigger name of trigger that should be used in method
454	* @return mixed data array on success, a MDB2 error on failure
455	* @access public
456	*/
457	function getTriggerDefinition($trigger)
458	{
459	$db =& $this->getDBInstance();
460	if (PEAR::isError($db)) {
461	return $db;
462	}
463
464	$query = 'SELECT trigger_name,
465	event_object_table AS table_name,
466	action_statement AS trigger_body,
467	action_timing AS trigger_type,
468	event_manipulation AS trigger_event
469	FROM information_schema.triggers
470	WHERE trigger_name = '. $db->quote($trigger, 'text');
471	$types = array(
472	'trigger_name' => 'text',
473	'table_name' => 'text',
474	'trigger_body' => 'text',
475	'trigger_type' => 'text',
476	'trigger_event' => 'text',
477	);
478	$def = $db->queryRow($query, $types, MDB2_FETCHMODE_ASSOC);
479	if (PEAR::isError($def)) {
480	return $def;
481	}
482	$def['trigger_comment'] = '';
483	$def['trigger_enabled'] = true;
484	return $def;
485	}
486
487	// }}}
488	// {{{ tableInfo()
489
490	/**
491	* Returns information about a table or a result set
492	*
493	* @param object\|string $result MDB2_result object from a query or a
494	* string containing the name of a table.
495	* While this also accepts a query result
496	* resource identifier, this behavior is
497	* deprecated.
498	* @param int $mode a valid tableInfo mode
499	*
500	* @return array an associative array with the information requested.
501	* A MDB2_Error object on failure.
502	*
503	* @see MDB2_Driver_Common::setOption()
504	*/
505	function tableInfo($result, $mode = null)
506	{
507	if (is_string($result)) {
508	return parent::tableInfo($result, $mode);
509	}
510
511	$db =& $this->getDBInstance();
512	if (PEAR::isError($db)) {
513	return $db;
514	}
515
516	$resource = MDB2::isResultCommon($result) ? $result->getResource() : $result;
517	if (!is_object($resource)) {
518	return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
519	'Could not generate result resource', __FUNCTION__);
520	}
521
522	if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
523	if ($db->options['field_case'] == CASE_LOWER) {
524	$case_func = 'strtolower';
525	} else {
526	$case_func = 'strtoupper';
527	}
528	} else {
529	$case_func = 'strval';
530	}
531
532	$count = @mysqli_num_fields($resource);
533	$res = array();
534	if ($mode) {
535	$res['num_fields'] = $count;
536	}
537
538	$db->loadModule('Datatype', null, true);
539	for ($i = 0; $i < $count; $i++) {
540	$tmp = @mysqli_fetch_field($resource);
541
542	$flags = '';
543	foreach ($this->flags as $const => $means) {
544	if ($tmp->flags & $const) {
545	$flags.= $means . ' ';
546	}
547	}
548	if ($tmp->def) {
549	$flags.= 'default_' . rawurlencode($tmp->def);
550	}
551	$flags = trim($flags);
552
553	$res[$i] = array(
554	'table' => $case_func($tmp->table),
555	'name' => $case_func($tmp->name),
556	'type' => isset($this->types[$tmp->type])
557	? $this->types[$tmp->type] : 'unknown',
558	// http://bugs.php.net/?id=36579
559	'length' => $tmp->length,
560	'flags' => $flags,
561	);
562	$mdb2type_info = $db->datatype->mapNativeDatatype($res[$i]);
563	if (PEAR::isError($mdb2type_info)) {
564	return $mdb2type_info;
565	}
566	$res[$i]['mdb2type'] = $mdb2type_info[0][0];
567	if ($mode & MDB2_TABLEINFO_ORDER) {
568	$res['order'][$res[$i]['name']] = $i;
569	}
570	if ($mode & MDB2_TABLEINFO_ORDERTABLE) {
571	$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
572	}
573	}
574
575	return $res;
576	}
577	}
578	?>

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