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source: github/program/lib/MDB2/Driver/Reverse/mssql.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
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File size: 26.9 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, Frank M. Kromann, Lorenzo Alberton \|
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	// \| Authors: Lukas Smith <smith@pooteeweet.org> \|
43	// \| Lorenzo Alberton <l.alberton@quipo.it> \|
44	// +----------------------------------------------------------------------+
45	//
46	// $Id: mssql.php,v 1.48 2007/11/25 13:38:29 quipo Exp $
47	//
48
49	require_once 'MDB2/Driver/Reverse/Common.php';
50
51	/**
52	* MDB2 MSSQL driver for the schema reverse engineering module
53	*
54	* @package MDB2
55	* @category Database
56	* @author Lukas Smith <smith@dybnet.de>
57	* @author Lorenzo Alberton <l.alberton@quipo.it>
58	*/
59	class MDB2_Driver_Reverse_mssql extends MDB2_Driver_Reverse_Common
60	{
61	// {{{ getTableFieldDefinition()
62
63	/**
64	* Get the structure of a field into an array
65	*
66	* @param string $table_name name of table that should be used in method
67	* @param string $field_name name of field that should be used in method
68	* @return mixed data array on success, a MDB2 error on failure
69	* @access public
70	*/
71	function getTableFieldDefinition($table_name, $field_name)
72	{
73	$db =& $this->getDBInstance();
74	if (PEAR::isError($db)) {
75	return $db;
76	}
77
78	$result = $db->loadModule('Datatype', null, true);
79	if (PEAR::isError($result)) {
80	return $result;
81	}
82
83	list($schema, $table) = $this->splitTableSchema($table_name);
84
85	$table = $db->quoteIdentifier($table, true);
86	$fldname = $db->quoteIdentifier($field_name, true);
87
88	$query = "SELECT t.table_name,
89	c.column_name 'name',
90	c.data_type 'type',
91	CASE c.is_nullable WHEN 'YES' THEN 1 ELSE 0 END AS 'is_nullable',
92	c.column_default,
93	c.character_maximum_length 'length',
94	c.numeric_precision,
95	c.numeric_scale,
96	c.character_set_name,
97	c.collation_name
98	FROM INFORMATION_SCHEMA.TABLES t,
99	INFORMATION_SCHEMA.COLUMNS c
100	WHERE t.table_name = c.table_name
101	AND t.table_name = '$table'
102	AND c.column_name = '$fldname'";
103	if (!empty($schema)) {
104	$query .= " AND t.table_schema = '" .$db->quoteIdentifier($schema, true) ."'";
105	}
106	$query .= ' ORDER BY t.table_name';
107	$column = $db->queryRow($query, null, MDB2_FETCHMODE_ASSOC);
108	if (PEAR::isError($column)) {
109	return $column;
110	}
111	if (empty($column)) {
112	return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
113	'it was not specified an existing table column', __FUNCTION__);
114	}
115
116	if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
117	if ($db->options['field_case'] == CASE_LOWER) {
118	$column['name'] = strtolower($column['name']);
119	} else {
120	$column['name'] = strtoupper($column['name']);
121	}
122	} else {
123	$column = array_change_key_case($column, $db->options['field_case']);
124	}
125	$mapped_datatype = $db->datatype->mapNativeDatatype($column);
126	if (PEAR::isError($mapped_datatype)) {
127	return $mapped_datatype;
128	}
129	list($types, $length, $unsigned, $fixed) = $mapped_datatype;
130	$notnull = true;
131	if ($column['is_nullable']) {
132	$notnull = false;
133	}
134	$default = false;
135	if (array_key_exists('column_default', $column)) {
136	$default = $column['column_default'];
137	if (is_null($default) && $notnull) {
138	$default = '';
139	} elseif (strlen($default) > 4
140	&& substr($default, 0, 1) == '('
141	&& substr($default, -1, 1) == ')'
142	) {
143	//mssql wraps the default value in parentheses: "((1234))", "(NULL)"
144	$default = trim($default, '()');
145	if ($default == 'NULL') {
146	$default = null;
147	}
148	}
149	}
150	$definition[0] = array(
151	'notnull' => $notnull,
152	'nativetype' => preg_replace('/^([a-z]+)[^a-z].*/i', '\\1', $column['type'])
153	);
154	if (!is_null($length)) {
155	$definition[0]['length'] = $length;
156	}
157	if (!is_null($unsigned)) {
158	$definition[0]['unsigned'] = $unsigned;
159	}
160	if (!is_null($fixed)) {
161	$definition[0]['fixed'] = $fixed;
162	}
163	if ($default !== false) {
164	$definition[0]['default'] = $default;
165	}
166	foreach ($types as $key => $type) {
167	$definition[$key] = $definition[0];
168	if ($type == 'clob' \|\| $type == 'blob') {
169	unset($definition[$key]['default']);
170	}
171	$definition[$key]['type'] = $type;
172	$definition[$key]['mdb2type'] = $type;
173	}
174	return $definition;
175	}
176
177	// }}}
178	// {{{ getTableIndexDefinition()
179
180	/**
181	* Get the structure of an index into an array
182	*
183	* @param string $table_name name of table that should be used in method
184	* @param string $index_name name of index that should be used in method
185	* @return mixed data array on success, a MDB2 error on failure
186	* @access public
187	*/
188	function getTableIndexDefinition($table_name, $index_name)
189	{
190	$db =& $this->getDBInstance();
191	if (PEAR::isError($db)) {
192	return $db;
193	}
194
195	list($schema, $table) = $this->splitTableSchema($table_name);
196
197	$table = $db->quoteIdentifier($table, true);
198	//$idxname = $db->quoteIdentifier($index_name, true);
199
200	$query = "SELECT OBJECT_NAME(i.id) tablename,
201	i.name indexname,
202	c.name field_name,
203	CASE INDEXKEY_PROPERTY(i.id, i.indid, ik.keyno, 'IsDescending')
204	WHEN 1 THEN 'DESC' ELSE 'ASC'
205	END 'collation',
206	ik.keyno 'position'
207	FROM sysindexes i
208	JOIN sysindexkeys ik ON ik.id = i.id AND ik.indid = i.indid
209	JOIN syscolumns c ON c.id = ik.id AND c.colid = ik.colid
210	WHERE OBJECT_NAME(i.id) = '$table'
211	AND i.name = '%s'
212	AND NOT EXISTS (
213	SELECT *
214	FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE k
215	WHERE k.table_name = OBJECT_NAME(i.id)
216	AND k.constraint_name = i.name";
217	if (!empty($schema)) {
218	$query .= " AND k.table_schema = '" .$db->quoteIdentifier($schema, true) ."'";
219	}
220	$query .= ')
221	ORDER BY tablename, indexname, ik.keyno';
222
223	$index_name_mdb2 = $db->getIndexName($index_name);
224	$result = $db->queryRow(sprintf($query, $index_name_mdb2));
225	if (!PEAR::isError($result) && !is_null($result)) {
226	// apply 'idxname_format' only if the query succeeded, otherwise
227	// fallback to the given $index_name, without transformation
228	$index_name = $index_name_mdb2;
229	}
230	$result = $db->query(sprintf($query, $index_name));
231	if (PEAR::isError($result)) {
232	return $result;
233	}
234
235	$definition = array();
236	while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
237	$column_name = $row['field_name'];
238	if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
239	if ($db->options['field_case'] == CASE_LOWER) {
240	$column_name = strtolower($column_name);
241	} else {
242	$column_name = strtoupper($column_name);
243	}
244	}
245	$definition['fields'][$column_name] = array(
246	'position' => (int)$row['position'],
247	);
248	if (!empty($row['collation'])) {
249	$definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'ASC'
250	? 'ascending' : 'descending');
251	}
252	}
253	$result->free();
254	if (empty($definition['fields'])) {
255	return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
256	'it was not specified an existing table index', __FUNCTION__);
257	}
258	return $definition;
259	}
260
261	// }}}
262	// {{{ getTableConstraintDefinition()
263
264	/**
265	* Get the structure of a constraint into an array
266	*
267	* @param string $table_name name of table that should be used in method
268	* @param string $constraint_name name of constraint that should be used in method
269	* @return mixed data array on success, a MDB2 error on failure
270	* @access public
271	*/
272	function getTableConstraintDefinition($table_name, $constraint_name)
273	{
274	$db =& $this->getDBInstance();
275	if (PEAR::isError($db)) {
276	return $db;
277	}
278
279	list($schema, $table) = $this->splitTableSchema($table_name);
280
281	$table = $db->quoteIdentifier($table, true);
282	$query = "SELECT k.table_name,
283	k.column_name field_name,
284	CASE c.constraint_type WHEN 'PRIMARY KEY' THEN 1 ELSE 0 END 'primary',
285	CASE c.constraint_type WHEN 'UNIQUE' THEN 1 ELSE 0 END 'unique',
286	CASE c.constraint_type WHEN 'FOREIGN KEY' THEN 1 ELSE 0 END 'foreign',
287	CASE c.constraint_type WHEN 'CHECK' THEN 1 ELSE 0 END 'check',
288	CASE c.is_deferrable WHEN 'NO' THEN 0 ELSE 1 END 'deferrable',
289	CASE c.initially_deferred WHEN 'NO' THEN 0 ELSE 1 END 'initiallydeferred',
290	rc.match_option 'match',
291	rc.update_rule 'onupdate',
292	rc.delete_rule 'ondelete',
293	kcu.table_name 'references_table',
294	kcu.column_name 'references_field',
295	k.ordinal_position 'field_position'
296	FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE k
297	LEFT JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS c
298	ON k.table_name = c.table_name
299	AND k.table_schema = c.table_schema
300	AND k.table_catalog = c.table_catalog
301	AND k.constraint_catalog = c.constraint_catalog
302	AND k.constraint_name = c.constraint_name
303	LEFT JOIN INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS rc
304	ON rc.constraint_schema = c.constraint_schema
305	AND rc.constraint_catalog = c.constraint_catalog
306	AND rc.constraint_name = c.constraint_name
307	LEFT JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE kcu
308	ON rc.unique_constraint_schema = kcu.constraint_schema
309	AND rc.unique_constraint_catalog = kcu.constraint_catalog
310	AND rc.unique_constraint_name = kcu.constraint_name
311	AND k.ordinal_position = kcu.ordinal_position
312	WHERE k.constraint_catalog = DB_NAME()
313	AND k.table_name = '$table'
314	AND k.constraint_name = '%s'";
315	if (!empty($schema)) {
316	$query .= " AND k.table_schema = '" .$db->quoteIdentifier($schema, true) ."'";
317	}
318	$query .= ' ORDER BY k.constraint_name,
319	k.ordinal_position';
320
321	$constraint_name_mdb2 = $db->getIndexName($constraint_name);
322	$result = $db->queryRow(sprintf($query, $constraint_name_mdb2));
323	if (!PEAR::isError($result) && !is_null($result)) {
324	// apply 'idxname_format' only if the query succeeded, otherwise
325	// fallback to the given $index_name, without transformation
326	$constraint_name = $constraint_name_mdb2;
327	}
328	$result = $db->query(sprintf($query, $constraint_name));
329	if (PEAR::isError($result)) {
330	return $result;
331	}
332
333	$definition = array(
334	'fields' => array()
335	);
336	while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
337	$row = array_change_key_case($row, CASE_LOWER);
338	$column_name = $row['field_name'];
339	if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
340	if ($db->options['field_case'] == CASE_LOWER) {
341	$column_name = strtolower($column_name);
342	} else {
343	$column_name = strtoupper($column_name);
344	}
345	}
346	$definition['fields'][$column_name] = array(
347	'position' => (int)$row['field_position']
348	);
349	if ($row['foreign']) {
350	$ref_column_name = $row['references_field'];
351	if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
352	if ($db->options['field_case'] == CASE_LOWER) {
353	$ref_column_name = strtolower($ref_column_name);
354	} else {
355	$ref_column_name = strtoupper($ref_column_name);
356	}
357	}
358	$definition['references']['table'] = $row['references_table'];
359	$definition['references']['fields'][$ref_column_name] = array(
360	'position' => (int)$row['field_position']
361	);
362	}
363	//collation?!?
364	/*
365	if (!empty($row['collation'])) {
366	$definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'ASC'
367	? 'ascending' : 'descending');
368	}
369	*/
370	$lastrow = $row;
371	// otherwise $row is no longer usable on exit from loop
372	}
373	$result->free();
374	if (empty($definition['fields'])) {
375	return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
376	$constraint_name . ' is not an existing table constraint', __FUNCTION__);
377	}
378
379	$definition['primary'] = (boolean)$lastrow['primary'];
380	$definition['unique'] = (boolean)$lastrow['unique'];
381	$definition['foreign'] = (boolean)$lastrow['foreign'];
382	$definition['check'] = (boolean)$lastrow['check'];
383	$definition['deferrable'] = (boolean)$lastrow['deferrable'];
384	$definition['initiallydeferred'] = (boolean)$lastrow['initiallydeferred'];
385	$definition['onupdate'] = $lastrow['onupdate'];
386	$definition['ondelete'] = $lastrow['ondelete'];
387	$definition['match'] = $lastrow['match'];
388
389	return $definition;
390	}
391
392	// }}}
393	// {{{ getTriggerDefinition()
394
395	/**
396	* Get the structure of a trigger into an array
397	*
398	* EXPERIMENTAL
399	*
400	* WARNING: this function is experimental and may change the returned value
401	* at any time until labelled as non-experimental
402	*
403	* @param string $trigger name of trigger that should be used in method
404	* @return mixed data array on success, a MDB2 error on failure
405	* @access public
406	*/
407	function getTriggerDefinition($trigger)
408	{
409	$db =& $this->getDBInstance();
410	if (PEAR::isError($db)) {
411	return $db;
412	}
413
414	$query = "SELECT sys1.name trigger_name,
415	sys2.name table_name,
416	c.text trigger_body,
417	c.encrypted is_encripted,
418	CASE
419	WHEN OBJECTPROPERTY(sys1.id, 'ExecIsTriggerDisabled') = 1
420	THEN 0 ELSE 1
421	END trigger_enabled,
422	CASE
423	WHEN OBJECTPROPERTY(sys1.id, 'ExecIsInsertTrigger') = 1
424	THEN 'INSERT'
425	WHEN OBJECTPROPERTY(sys1.id, 'ExecIsUpdateTrigger') = 1
426	THEN 'UPDATE'
427	WHEN OBJECTPROPERTY(sys1.id, 'ExecIsDeleteTrigger') = 1
428	THEN 'DELETE'
429	END trigger_event,
430	CASE WHEN OBJECTPROPERTY(sys1.id, 'ExecIsInsteadOfTrigger') = 1
431	THEN 'INSTEAD OF' ELSE 'AFTER'
432	END trigger_type,
433	'' trigger_comment
434	FROM sysobjects sys1
435	JOIN sysobjects sys2 ON sys1.parent_obj = sys2.id
436	JOIN syscomments c ON sys1.id = c.id
437	WHERE sys1.xtype = 'TR'
438	AND sys1.name = ". $db->quote($trigger, 'text');
439
440	$types = array(
441	'trigger_name' => 'text',
442	'table_name' => 'text',
443	'trigger_body' => 'text',
444	'trigger_type' => 'text',
445	'trigger_event' => 'text',
446	'trigger_comment' => 'text',
447	'trigger_enabled' => 'boolean',
448	'is_encripted' => 'boolean',
449	);
450
451	$def = $db->queryRow($query, $types, MDB2_FETCHMODE_ASSOC);
452	if (PEAR::isError($def)) {
453	return $def;
454	}
455	$trg_body = $db->queryCol('EXEC sp_helptext '. $db->quote($trigger, 'text'), 'text');
456	if (!PEAR::isError($trg_body)) {
457	$def['trigger_body'] = implode('', $trg_body);
458	}
459	return $def;
460	}
461
462	// }}}
463	// {{{ tableInfo()
464
465	/**
466	* Returns information about a table or a result set
467	*
468	* NOTE: only supports 'table' and 'flags' if <var>$result</var>
469	* is a table name.
470	*
471	* @param object\|string $result MDB2_result object from a query or a
472	* string containing the name of a table.
473	* While this also accepts a query result
474	* resource identifier, this behavior is
475	* deprecated.
476	* @param int $mode a valid tableInfo mode
477	*
478	* @return array an associative array with the information requested.
479	* A MDB2_Error object on failure.
480	*
481	* @see MDB2_Driver_Common::tableInfo()
482	*/
483	function tableInfo($result, $mode = null)
484	{
485	if (is_string($result)) {
486	return parent::tableInfo($result, $mode);
487	}
488
489	$db =& $this->getDBInstance();
490	if (PEAR::isError($db)) {
491	return $db;
492	}
493
494	$resource = MDB2::isResultCommon($result) ? $result->getResource() : $result;
495	if (!is_resource($resource)) {
496	return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
497	'Could not generate result resource', __FUNCTION__);
498	}
499
500	if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
501	if ($db->options['field_case'] == CASE_LOWER) {
502	$case_func = 'strtolower';
503	} else {
504	$case_func = 'strtoupper';
505	}
506	} else {
507	$case_func = 'strval';
508	}
509
510	$count = @mssql_num_fields($resource);
511	$res = array();
512
513	if ($mode) {
514	$res['num_fields'] = $count;
515	}
516
517	$db->loadModule('Datatype', null, true);
518	for ($i = 0; $i < $count; $i++) {
519	$res[$i] = array(
520	'table' => '',
521	'name' => $case_func(@mssql_field_name($resource, $i)),
522	'type' => @mssql_field_type($resource, $i),
523	'length' => @mssql_field_length($resource, $i),
524	'flags' => '',
525	);
526	$mdb2type_info = $db->datatype->mapNativeDatatype($res[$i]);
527	if (PEAR::isError($mdb2type_info)) {
528	return $mdb2type_info;
529	}
530	$res[$i]['mdb2type'] = $mdb2type_info[0][0];
531	if ($mode & MDB2_TABLEINFO_ORDER) {
532	$res['order'][$res[$i]['name']] = $i;
533	}
534	if ($mode & MDB2_TABLEINFO_ORDERTABLE) {
535	$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
536	}
537	}
538
539	return $res;
540	}
541
542	// }}}
543	// {{{ _mssql_field_flags()
544
545	/**
546	* Get a column's flags
547	*
548	* Supports "not_null", "primary_key",
549	* "auto_increment" (mssql identity), "timestamp" (mssql timestamp),
550	* "unique_key" (mssql unique index, unique check or primary_key) and
551	* "multiple_key" (multikey index)
552	*
553	* mssql timestamp is NOT similar to the mysql timestamp so this is maybe
554	* not useful at all - is the behaviour of mysql_field_flags that primary
555	* keys are alway unique? is the interpretation of multiple_key correct?
556	*
557	* @param string $table the table name
558	* @param string $column the field name
559	*
560	* @return string the flags
561	*
562	* @access protected
563	* @author Joern Barthel <j_barthel@web.de>
564	*/
565	function _mssql_field_flags($table, $column)
566	{
567	$db =& $this->getDBInstance();
568	if (PEAR::isError($db)) {
569	return $db;
570	}
571
572	static $tableName = null;
573	static $flags = array();
574
575	if ($table != $tableName) {
576
577	$flags = array();
578	$tableName = $table;
579
580	// get unique and primary keys
581	$res = $db->queryAll("EXEC SP_HELPINDEX[$table]", null, MDB2_FETCHMODE_ASSOC);
582
583	foreach ($res as $val) {
584	$val = array_change_key_case($val, CASE_LOWER);
585	$keys = explode(', ', $val['index_keys']);
586
587	if (sizeof($keys) > 1) {
588	foreach ($keys as $key) {
589	$this->_add_flag($flags[$key], 'multiple_key');
590	}
591	}
592
593	if (strpos($val['index_description'], 'primary key')) {
594	foreach ($keys as $key) {
595	$this->_add_flag($flags[$key], 'primary_key');
596	}
597	} elseif (strpos($val['index_description'], 'unique')) {
598	foreach ($keys as $key) {
599	$this->_add_flag($flags[$key], 'unique_key');
600	}
601	}
602	}
603
604	// get auto_increment, not_null and timestamp
605	$res = $db->queryAll("EXEC SP_COLUMNS[$table]", null, MDB2_FETCHMODE_ASSOC);
606
607	foreach ($res as $val) {
608	$val = array_change_key_case($val, CASE_LOWER);
609	if ($val['nullable'] == '0') {
610	$this->_add_flag($flags[$val['column_name']], 'not_null');
611	}
612	if (strpos($val['type_name'], 'identity')) {
613	$this->_add_flag($flags[$val['column_name']], 'auto_increment');
614	}
615	if (strpos($val['type_name'], 'timestamp')) {
616	$this->_add_flag($flags[$val['column_name']], 'timestamp');
617	}
618	}
619	}
620
621	if (!empty($flags[$column])) {
622	return(implode(' ', $flags[$column]));
623	}
624	return '';
625	}
626
627	// }}}
628	// {{{ _add_flag()
629
630	/**
631	* Adds a string to the flags array if the flag is not yet in there
632	* - if there is no flag present the array is created
633	*
634	* @param array &$array the reference to the flag-array
635	* @param string $value the flag value
636	*
637	* @return void
638	*
639	* @access protected
640	* @author Joern Barthel <j_barthel@web.de>
641	*/
642	function _add_flag(&$array, $value)
643	{
644	if (!is_array($array)) {
645	$array = array($value);
646	} elseif (!in_array($value, $array)) {
647	array_push($array, $value);
648	}
649	}
650
651	// }}}
652	}
653	?>

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