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/base/lib/flourishlib/fSchema.php

https://bitbucket.org/thanhtungnguyenphp/monitos
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  1. <?php
    2. 

  2. /**
    3. 

  3.  * Gets schema information for the selected database
    4. 

  4.  * 
    5. 

  5.  * @copyright  Copyright (c) 2007-2011 Will Bond
    6. 

  6.  * @author     Will Bond [wb] <will@flourishlib.com>
    7. 

  7.  * @license    http://flourishlib.com/license
    8. 

  8.  * 
    9. 

  9.  * @package    Flourish
    10. 

  10.  * @link       http://flourishlib.com/fSchema
    11. 

  11.  * 
    12. 

  12.  * @version    1.0.0b46
    13. 

  13.  * @changes    1.0.0b46  Enhanced SQLite schema detection to cover situations where `UNIQUE` constraints are defined separately from the table and when comments are used in `CREATE TABLE` statements [wb, 2011-02-06]
    14. 

  14.  * @changes    1.0.0b45  Fixed Oracle auto incrementing detection to work with `INSERT OR UPDATE` triggers, fixed detection of dynamic default date/time/timestamp values for DB2 and Oracle [wb, 2010-12-04]
    15. 

  15.  * @changes    1.0.0b44  Fixed the list of valid elements for ::getColumnInfo() [wb, 2010-11-28]
    16. 

  16.  * @changes    1.0.0b43  Added the `comment` element to the information returned by ::getColumnInfo() [wb, 2010-11-28]
    17. 

  17.  * @changes    1.0.0b42  Fixed a bug with MySQL detecting default `ON DELETE` clauses [wb, 2010-10-19]
    18. 

  18.  * @changes    1.0.0b41  Fixed handling MySQL table names that require quoting [wb, 2010-08-24]
    19. 

  19.  * @changes    1.0.0b40  Fixed bugs in the documentation and error message of ::getColumnInfo() about what are valid elements [wb, 2010-07-21]
    20. 

  20.  * @changes    1.0.0b39  Fixed a regression where key detection SQL was not compatible with PostgreSQL 8.1 [wb, 2010-04-13]
    21. 

  21.  * @changes    1.0.0b38  Added Oracle support to ::getDatabases() [wb, 2010-04-13]
    22. 

  22.  * @changes    1.0.0b37  Fixed ::getDatabases() for MSSQL [wb, 2010-04-09]
    23. 

  23.  * @changes    1.0.0b36  Fixed PostgreSQL to properly report explicit `NULL` default values via ::getColumnInfo() [wb, 2010-03-30]
    24. 

  24.  * @changes    1.0.0b35  Added `max_length` values for various text and blob data types across all databases [wb, 2010-03-29]
    25. 

  25.  * @changes    1.0.0b34  Added `min_value` and `max_value` attributes to ::getColumnInfo() to specify the valid range for numeric columns [wb, 2010-03-16]
    26. 

  26.  * @changes    1.0.0b33  Changed it so that PostgreSQL unique indexes containing functions are ignored since they can't be properly detected at this point [wb, 2010-03-14]
    27. 

  27.  * @changes    1.0.0b32  Fixed ::getTables() to not include views for MySQL [wb, 2010-03-14]
    28. 

  28.  * @changes    1.0.0b31  Fixed the creation of the default caching key for ::enableCaching() [wb, 2010-03-02]
    29. 

  29.  * @changes    1.0.0b30  Fixed the class to work with lower privilege Oracle accounts and added detection of Oracle number columns [wb, 2010-01-25]
    30. 

  30.  * @changes    1.0.0b29  Added on_delete and on_update elements to one-to-one relationship info retrieved by ::getRelationships() [wb, 2009-12-16]
    31. 

  31.  * @changes    1.0.0b28  Fixed a bug with detecting some multi-column unique constraints in SQL Server databases [wb, 2009-11-13]
    32. 

  32.  * @changes    1.0.0b27  Added a parameter to ::enableCaching() to provide a key token that will allow cached values to be shared between multiple databases with the same schema [wb, 2009-10-28]
    33. 

  33.  * @changes    1.0.0b26  Added the placeholder element to the output of ::getColumnInfo(), added support for PostgreSQL, MSSQL and Oracle "schemas", added support for parsing quoted SQLite identifiers [wb, 2009-10-22]
    34. 

  34.  * @changes    1.0.0b25  One-to-one relationships utilizing the primary key as a foreign key are now properly detected [wb, 2009-09-22]
    35. 

  35.  * @changes    1.0.0b24  Fixed MSSQL support to work with ODBC database connections [wb, 2009-09-18]
    36. 

  36.  * @changes    1.0.0b23  Fixed a bug where one-to-one relationships were being listed as many-to-one [wb, 2009-07-21]
    37. 

  37.  * @changes    1.0.0b22  PostgreSQL UNIQUE constraints that are created as indexes and not table constraints are now properly detected [wb, 2009-07-08]
    38. 

  38.  * @changes    1.0.0b21  Added support for the UUID data type in PostgreSQL [wb, 2009-06-18]
    39. 

  39.  * @changes    1.0.0b20  Add caching of merged info, improved performance of ::getColumnInfo() [wb, 2009-06-15]
    40. 

  40.  * @changes    1.0.0b19  Fixed a couple of bugs with ::setKeysOverride() [wb, 2009-06-04]
    41. 

  41.  * @changes    1.0.0b18  Added missing support for MySQL mediumint columns [wb, 2009-05-18]
    42. 

  42.  * @changes    1.0.0b17  Fixed a bug with ::clearCache() not properly reseting the tables and databases list [wb, 2009-05-13]
    43. 

  43.  * @changes    1.0.0b16  Backwards Compatibility Break - ::setCacheFile() changed to ::enableCaching() and now requires an fCache object, ::flushInfo() renamed to ::clearCache(), added Oracle support [wb, 2009-05-04]
    44. 

  44.  * @changes    1.0.0b15  Added support for the three different types of identifier quoting in SQLite [wb, 2009-03-28]
    45. 

  45.  * @changes    1.0.0b14  Added support for MySQL column definitions containing the COLLATE keyword [wb, 2009-03-28]
    46. 

  46.  * @changes    1.0.0b13  Fixed a bug with detecting PostgreSQL columns having both a CHECK constraint and a UNIQUE constraint [wb, 2009-02-27]
    47. 

  47.  * @changes    1.0.0b12  Fixed detection of multi-column primary keys in MySQL [wb, 2009-02-27]
    48. 

  48.  * @changes    1.0.0b11  Fixed an issue parsing MySQL tables with comments [wb, 2009-02-25]
    49. 

  49.  * @changes    1.0.0b10  Added the ::getDatabases() method [wb, 2009-02-24]
    50. 

  50.  * @changes    1.0.0b9   Now detects unsigned and zerofill MySQL data types that do not have a parenthetical part [wb, 2009-02-16]
    51. 

  51.  * @changes    1.0.0b8   Mapped the MySQL data type `'set'` to `'varchar'`, however valid values are not implemented yet [wb, 2009-02-01]
    52. 

  52.  * @changes    1.0.0b7   Fixed a bug with detecting MySQL timestamp columns [wb, 2009-01-28]
    53. 

  53.  * @changes    1.0.0b6   Fixed a bug with detecting MySQL columns that accept `NULL` [wb, 2009-01-19]
    54. 

  54.  * @changes    1.0.0b5   ::setColumnInfo(): fixed a bug with not grabbing the real database schema first, made general improvements [wb, 2009-01-19]
    55. 

  55.  * @changes    1.0.0b4   Added support for MySQL binary data types, numeric data type options unsigned and zerofill, and per-column character set definitions [wb, 2009-01-17]
    56. 

  56.  * @changes    1.0.0b3   Fixed detection of the data type of MySQL timestamp columns, added support for dynamic default date/time values [wb, 2009-01-11]
    57. 

  57.  * @changes    1.0.0b2   Fixed a bug with detecting multi-column unique keys in MySQL [wb, 2009-01-03]
    58. 

  58.  * @changes    1.0.0b    The initial implementation [wb, 2007-09-25]
    59. 

  59.  */
    60. 

  60. class fSchema
    61. 

  61. {
    62. 

  62. 	/**
    63. 

  63. 	 * The place to cache to
    64. 

  64. 	 * 
    65. 

  65. 	 * @var fCache
    66. 

  66. 	 */
    67. 

  67. 	private $cache = NULL;
    68. 

  68. 	
    69. 

  69. 	/**
    70. 

  70. 	 * The cache prefix to use for cache entries
    71. 

  71. 	 * 
    72. 

  72. 	 * @var string
    73. 

  73. 	 */
    74. 

  74. 	private $cache_prefix;
    75. 

  75. 	
    76. 

  76. 	/**
    77. 

  77. 	 * The cached column info
    78. 

  78. 	 * 
    79. 

  79. 	 * @var array
    80. 

  80. 	 */
    81. 

  81. 	private $column_info = array();
    82. 

  82. 	
    83. 

  83. 	/**
    84. 

  84. 	 * The column info to override
    85. 

  85. 	 * 
    86. 

  86. 	 * @var array
    87. 

  87. 	 */
    88. 

  88. 	private $column_info_override = array();
    89. 

  89. 	
    90. 

  90. 	/**
    91. 

  91. 	 * A reference to an instance of the fDatabase class
    92. 

  92. 	 * 
    93. 

  93. 	 * @var fDatabase
    94. 

  94. 	 */
    95. 

  95. 	private $database = NULL;
    96. 

  96. 	
    97. 

  97. 	/**
    98. 

  98. 	 * The databases on the current database server
    99. 

  99. 	 * 
    100. 

  100. 	 * @var array
    101. 

  101. 	 */
    102. 

  102. 	private $databases = NULL;
    103. 

  103. 	
    104. 

  104. 	/**
    105. 

  105. 	 * The cached key info
    106. 

  106. 	 * 
    107. 

  107. 	 * @var array
    108. 

  108. 	 */
    109. 

  109. 	private $keys = array();
    110. 

  110. 	
    111. 

  111. 	/**
    112. 

  112. 	 * The key info to override
    113. 

  113. 	 * 
    114. 

  114. 	 * @var array
    115. 

  115. 	 */
    116. 

  116. 	private $keys_override = array();
    117. 

  117. 	
    118. 

  118. 	/**
    119. 

  119. 	 * The merged column info
    120. 

  120. 	 * 
    121. 

  121. 	 * @var array
    122. 

  122. 	 */
    123. 

  123. 	private $merged_column_info = array();
    124. 

  124. 	
    125. 

  125. 	/**
    126. 

  126. 	 * The merged key info
    127. 

  127. 	 * 
    128. 

  128. 	 * @var array
    129. 

  129. 	 */
    130. 

  130. 	private $merged_keys = array();
    131. 

  131. 	
    132. 

  132. 	/**
    133. 

  133. 	 * The relationships in the database
    134. 

  134. 	 * 
    135. 

  135. 	 * @var array
    136. 

  136. 	 */
    137. 

  137. 	private $relationships = array();
    138. 

  138. 	
    139. 

  139. 	/**
    140. 

  140. 	 * The tables in the database
    141. 

  141. 	 * 
    142. 

  142. 	 * @var array
    143. 

  143. 	 */
    144. 

  144. 	private $tables = NULL;
    145. 

  145. 	
    146. 

  146. 	/**
    147. 

  147. 	 * The version of the database being queried
    148. 

  148. 	 * 
    149. 

  149. 	 * This is currently only used for MSSQL and MySQL
    150. 

  150. 	 * 
    151. 

  151. 	 * @var integer
    152. 

  152. 	 */
    153. 

  153. 	private $version = NULL;
    154. 

  154. 	
    155. 

  155. 	
    156. 

  156. 	/**
    157. 

  157. 	 * Sets the database
    158. 

  158. 	 * 
    159. 

  159. 	 * @param  fDatabase $database  The fDatabase instance
    160. 

  160. 	 * @return fSchema
    161. 

  161. 	 */
    162. 

  162. 	public function __construct($database)
    163. 

  163. 	{
    164. 

  164. 		$this->database = $database;
    165. 

  165. 	}
    166. 

  166. 	
    167. 

  167. 	
    168. 

  168. 	/**
    169. 

  169. 	 * All requests that hit this method should be requests for callbacks
    170. 

  170. 	 * 
    171. 

  171. 	 * @internal
    172. 

  172. 	 * 
    173. 

  173. 	 * @param  string $method  The method to create a callback for
    174. 

  174. 	 * @return callback  The callback for the method requested
    175. 

  175. 	 */
    176. 

  176. 	public function __get($method)
    177. 

  177. 	{
    178. 

  178. 		return array($this, $method);		
    179. 

  179. 	}
    180. 

  180. 	
    181. 

  181. 	
    182. 

  182. 	/**
    183. 

  183. 	 * Checks to see if a column is part of a single-column `UNIQUE` key
    184. 

  184. 	 * 
    185. 

  185. 	 * @param  string $table   The table the column is located in
    186. 

  186. 	 * @param  string $column  The column to check
    187. 

  187. 	 * @return boolean  If the column is part of a single-column unique key
    188. 

  188. 	 */
    189. 

  189. 	private function checkForSingleColumnUniqueKey($table, $column)
    190. 

  190. 	{        
    191. 

  191. 		foreach ($this->merged_keys[$table]['unique'] as $key) {
    192. 

  192. 			if (array($column) == $key) {
    193. 

  193. 				return TRUE;
    194. 

  194. 			}
    195. 

  195. 		}
    196. 

  196. 		if (array($column) == $this->merged_keys[$table]['primary']) {
    197. 

  197. 			return TRUE;
    198. 

  198. 		}
    199. 

  199. 		return FALSE;
    200. 

  200. 	}
    201. 

  201. 	
    202. 

  202. 	
    203. 

  203. 	/**
    204. 

  204. 	 * Clears all of the schema info out of the object and, if set, the fCache object
    205. 

  205. 	 * 
    206. 

  206. 	 * @internal
    207. 

  207. 	 * 
    208. 

  208. 	 * @return void
    209. 

  209. 	 */
    210. 

  210. 	public function clearCache()
    211. 

  211. 	{
    212. 

  212. 		$this->column_info        = array();
    213. 

  213. 		$this->databases          = NULL;
    214. 

  214. 		$this->keys               = array();
    215. 

  215. 		$this->merged_column_info = array();
    216. 

  216. 		$this->merged_keys        = array();
    217. 

  217. 		$this->relationships      = array();
    218. 

  218. 		$this->tables             = NULL;
    219. 

  219. 		if ($this->cache) {
    220. 

  220. 			$prefix = $this->makeCachePrefix();
    221. 

  221. 			$this->cache->delete($prefix . 'column_info');
    222. 

  222. 			$this->cache->delete($prefix . 'databases');
    223. 

  223. 			$this->cache->delete($prefix . 'keys');
    224. 

  224. 			$this->cache->delete($prefix . 'merged_column_info');
    225. 

  225. 			$this->cache->delete($prefix . 'merged_keys');
    226. 

  226. 			$this->cache->delete($prefix . 'relationships');
    227. 

  227. 			$this->cache->delete($prefix . 'tables');
    228. 

  228. 		}
    229. 

  229. 	}
    230. 

  230. 	
    231. 

  231. 	
    232. 

  232. 	/**
    233. 

  233. 	 * Sets the schema to be cached to the fCache object specified
    234. 

  234. 	 * 
    235. 

  235. 	 * @param  fCache $cache      The cache to cache to
    236. 

  236. 	 * @param  string $key_token  Internal use only! (this will be used in the cache key to uniquely identify the cache for this fSchema object) 
    237. 

  237. 	 * @return void
    238. 

  238. 	 */
    239. 

  239. 	public function enableCaching($cache, $key_token=NULL)
    240. 

  240. 	{
    241. 

  241. 		$this->cache = $cache;
    242. 

  242. 		
    243. 

  243. 		if ($key_token !== NULL) {
    244. 

  244. 			$this->cache_prefix = 'fSchema::' . $this->database->getType() . '::' . $key_token . '::';
    245. 

  245. 		}
    246. 

  246. 		$prefix = $this->makeCachePrefix();
    247. 

  247. 		
    248. 

  248. 		$this->column_info        = $this->cache->get($prefix . 'column_info',          array());
    249. 

  249. 		$this->databases          = $this->cache->get($prefix . 'databases',            NULL);
    250. 

  250. 		$this->keys               = $this->cache->get($prefix . 'keys',                 array());
    251. 

  251. 		$this->version            = $this->cache->get($prefix . 'version',              NULL);
    252. 

  252. 		
    253. 

  253. 		if (!$this->column_info_override && !$this->keys_override) {
    254. 

  254. 			$this->merged_column_info = $this->cache->get($prefix . 'merged_column_info',   array());
    255. 

  255. 			$this->merged_keys        = $this->cache->get($prefix . 'merged_keys',          array());  
    256. 

  256. 			$this->relationships      = $this->cache->get($prefix . 'relationships',        array());
    257. 

  257. 		}
    258. 

  258. 		
    259. 

  259. 		$this->tables             = $this->cache->get($prefix . 'tables',               NULL);   
    260. 

  260. 	}
    261. 

  261. 	
    262. 

  262. 	
    263. 

  263. 	/**
    264. 

  264. 	 * Gets the column info from the database for later access
    265. 

  265. 	 * 
    266. 

  266. 	 * @param  string $table  The table to fetch the column info for
    267. 

  267. 	 * @return void
    268. 

  268. 	 */
    269. 

  269. 	private function fetchColumnInfo($table)
    270. 

  270. 	{
    271. 

  271. 		if (isset($this->column_info[$table])) {
    272. 

  272. 			return;	
    273. 

  273. 		}
    274. 

  274. 		
    275. 

  275. 		switch ($this->database->getType()) {
    276. 

  276. 			case 'db2':
    277. 

  277. 				$column_info = $this->fetchDB2ColumnInfo($table);
    278. 

  278. 				break;
    279. 

  279. 			
    280. 

  280. 			case 'mssql':
    281. 

  281. 				$column_info = $this->fetchMSSQLColumnInfo($table);
    282. 

  282. 				break;
    283. 

  283. 			
    284. 

  284. 			case 'mysql':
    285. 

  285. 				$column_info = $this->fetchMySQLColumnInfo($table);
    286. 

  286. 				break;
    287. 

  287. 				
    288. 

  288. 			case 'oracle':
    289. 

  289. 				$column_info = $this->fetchOracleColumnInfo($table);
    290. 

  290. 				break;
    291. 

  291. 			
    292. 

  292. 			case 'postgresql':
    293. 

  293. 				$column_info = $this->fetchPostgreSQLColumnInfo($table);
    294. 

  294. 				break;
    295. 

  295. 				
    296. 

  296. 			case 'sqlite':
    297. 

  297. 				$column_info = $this->fetchSQLiteColumnInfo($table);
    298. 

  298. 				break;
    299. 

  299. 		}
    300. 

  300. 			
    301. 

  301. 		if (!$column_info) {
    302. 

  302. 			return;	
    303. 

  303. 		}
    304. 

  304. 			
    305. 

  305. 		$this->column_info[$table] = $column_info;
    306. 

  306. 		if ($this->cache) {
    307. 

  307. 			$this->cache->set($this->makeCachePrefix() . 'column_info', $this->column_info);	
    308. 

  308. 		}
    309. 

  309. 	}
    310. 

  310. 	
    311. 

  311. 	
    312. 

  312. 	/**
    313. 

  313. 	 * Gets the column info from a DB2 database
    314. 

  314. 	 * 
    315. 

  315. 	 * @param  string $table  The table to fetch the column info for
    316. 

  316. 	 * @return array  The column info for the table specified - see ::getColumnInfo() for details
    317. 

  317. 	 */
    318. 

  318. 	private function fetchDB2ColumnInfo($table)
    319. 

  319. 	{
    320. 

  320. 		$column_info = array();
    321. 

  321. 		
    322. 

  322. 		$schema = strtolower($this->database->getUsername());
    323. 

  323. 		if (strpos($table, '.') !== FALSE) {
    324. 

  324. 			list ($schema, $table) = explode('.', $table);
    325. 

  325. 		}
    326. 

  326. 		
    327. 

  327. 		$data_type_mapping = array(
    328. 

  328. 			'smallint'          => 'integer',
    329. 

  329. 			'integer'           => 'integer',
    330. 

  330. 			'bigint'            => 'integer',
    331. 

  331. 			'timestamp'         => 'timestamp',
    332. 

  332. 			'date'              => 'date',
    333. 

  333. 			'time'              => 'time',
    334. 

  334. 			'varchar'           => 'varchar',
    335. 

  335. 			'long varchar'      => 'varchar',
    336. 

  336. 			'vargraphic'        => 'varchar',
    337. 

  337. 			'long vargraphic'   => 'varchar',
    338. 

  338. 			'character'         => 'char',
    339. 

  339. 			'graphic'           => 'char',
    340. 

  340. 			'real'              => 'float',
    341. 

  341. 			'decimal'           => 'float',
    342. 

  342. 			'numeric'           => 'float',
    343. 

  343. 			'blob'              => 'blob',
    344. 

  344. 			'clob'              => 'text',
    345. 

  345. 			'dbclob'            => 'text'
    346. 

  346. 		);
    347. 

  347. 		
    348. 

  348. 		$max_min_values = array(
    349. 

  349. 			'smallint'   => array('min' => new fNumber(-32768),                  'max' => new fNumber(32767)),
    350. 

  350. 			'integer'    => array('min' => new fNumber(-2147483648),             'max' => new fNumber(2147483647)),
    351. 

  351. 			'bigint'     => array('min' => new fNumber('-9223372036854775808'),  'max' => new fNumber('9223372036854775807'))
    352. 

  352. 		);
    353. 

  353. 		
    354. 

  354. 		// Get the column info
    355. 

  355. 		$sql = "SELECT
    356. 

  356. 					LOWER(C.COLNAME) AS \"COLUMN\",
    357. 

  357. 					C.TYPENAME AS TYPE,
    358. 

  358. 					C.NULLS AS NULLABLE,
    359. 

  359. 					C.DEFAULT,
    360. 

  360. 					C.LENGTH AS MAX_LENGTH,
    361. 

  361. 					C.SCALE,
    362. 

  362. 					CASE WHEN C.IDENTITY = 'Y' AND (C.GENERATED = 'D' OR C.GENERATED = 'A') THEN '1' ELSE '0' END AS AUTO_INCREMENT,
    363. 

  363. 					CH.TEXT AS \"CONSTRAINT\",
    364. 

  364. 					C.REMARKS AS \"COMMENT\"
    365. 

  365. 				FROM
    366. 

  366. 					SYSCAT.COLUMNS AS C LEFT JOIN
    367. 

  367. 					SYSCAT.COLCHECKS AS CC ON C.TABSCHEMA = CC.TABSCHEMA AND C.TABNAME = CC.TABNAME AND C.COLNAME = CC.COLNAME AND CC.USAGE = 'R' LEFT JOIN
    368. 

  368. 					SYSCAT.CHECKS AS CH ON C.TABSCHEMA = CH.TABSCHEMA AND C.TABNAME = CH.TABNAME AND CH.TYPE = 'C' AND CH.CONSTNAME = CC.CONSTNAME
    369. 

  369. 				WHERE
    370. 

  370. 					C.TABSCHEMA = %s AND
    371. 

  371. 					C.TABNAME = %s
    372. 

  372. 				ORDER BY
    373. 

  373. 					C.COLNO ASC";
    374. 

  374. 		
    375. 

  375. 		$result = $this->database->query($sql, strtoupper($schema), strtoupper($table));
    376. 

  376. 		
    377. 

  377. 		foreach ($result as $row) {
    378. 

  378. 			
    379. 

  379. 			$info = array();
    380. 

  380. 			
    381. 

  381. 			foreach ($data_type_mapping as $data_type => $mapped_data_type) {
    382. 

  382. 				if (stripos($row['type'], $data_type) === 0) {
    383. 

  383. 					if (isset($max_min_values[$data_type])) {
    384. 

  384. 						$info['min_value'] = $max_min_values[$data_type]['min'];
    385. 

  385. 						$info['max_value'] = $max_min_values[$data_type]['max'];
    386. 

  386. 					}
    387. 

  387. 					$info['type'] = $mapped_data_type;
    388. 

  388. 					break;
    389. 

  389. 				}
    390. 

  390. 			}
    391. 

  391. 			
    392. 

  392. 			// Handle decimal places and min/max for numeric/decimals
    393. 

  393. 			if (in_array(strtolower($row['type']), array('decimal', 'numeric'))) {
    394. 

  394. 				$info['decimal_places'] = $row['scale'];
    395. 

  395. 				$before_digits = str_pad('', $row['max_length'] - $row['scale'], '9');
    396. 

  396. 				$after_digits  = str_pad('', $row['scale'], '9');
    397. 

  397. 				$max_min       = $before_digits . ($after_digits ? '.' : '') . $after_digits;
    398. 

  398. 				$info['min_value'] = new fNumber('-' . $max_min);
    399. 

  399. 				$info['max_value'] = new fNumber($max_min);
    400. 

  400. 			}
    401. 

  401. 			
    402. 

  402. 			if (!isset($info['type'])) {
    403. 

  403. 				$info['type'] = $row['type'];
    404. 

  404. 			}
    405. 

  405. 			
    406. 

  406. 			// Handle the special data for varchar columns
    407. 

  407. 			if (in_array($info['type'], array('char', 'varchar', 'text', 'blob'))) {
    408. 

  408. 				$info['max_length'] = $row['max_length'];
    409. 

  409. 			}
    410. 

  410. 			
    411. 

  411. 			// The generally accepted practice for boolean on DB2 is a CHAR(1) with a CHECK constraint
    412. 

  412. 			if ($info['type'] == 'char' && $info['max_length'] == 1 && !empty($row['constraint'])) {
    413. 

  413. 				if (is_resource($row['constraint'])) {
    414. 

  414. 					$row['constraint'] = stream_get_contents($row['constraint']);
    415. 

  415. 				}
    416. 

  416. 				if (preg_match('/^\s*' . preg_quote($row['column'], '/') . '\s+in\s+\(\s*(\'0\',\s*\'1\'|\'1\',\s*\'0\')\s*\)\s*$/i', $row['constraint'])) {
    417. 

  417. 					$info['type'] = 'boolean';
    418. 

  418. 					$info['max_length'] = NULL;
    419. 

  419. 				}
    420. 

  420. 			}
    421. 

  421. 			
    422. 

  422. 			// If the column has a constraint, look for valid values
    423. 

  423. 			if (in_array($info['type'], array('char', 'varchar')) && !empty($row['constraint'])) {
    424. 

  424. 				if (preg_match('/^\s*' . preg_quote($row['column'], '/') . '\s+in\s+\((.*?)\)\s*$/i', $row['constraint'], $match)) {
    425. 

  425. 					if (preg_match_all("/(?<!')'((''|[^']+)*)'/", $match[1], $matches, PREG_PATTERN_ORDER)) {
    426. 

  426. 						$info['valid_values'] = str_replace("''", "'", $matches[1]);
    427. 

  427. 					}			
    428. 

  428. 				}
    429. 

  429. 			}
    430. 

  430. 			
    431. 

  431. 			// Handle auto increment
    432. 

  432. 			if ($row['auto_increment']) {
    433. 

  433. 				$info['auto_increment'] = TRUE;
    434. 

  434. 			}
    435. 

  435. 			
    436. 

  436. 			// Handle default values
    437. 

  437. 			if ($row['default'] !== NULL) {
    438. 

  438. 				if ($row['default'] == 'NULL') {
    439. 

  439. 					$info['default'] = NULL;
    440. 

  440. 				} elseif (in_array($info['type'], array('timestamp', 'date', 'time')) && $row['default'][0] != "'") {
    441. 

  441. 					$info['default'] = str_replace(' ', '_', $row['default']);
    442. 

  442. 				} elseif (in_array($info['type'], array('char', 'varchar', 'text', 'timestamp', 'date', 'time')) ) {
    443. 

  443. 					$info['default'] = substr($row['default'], 1, -1);
    444. 

  444. 				} elseif ($info['type'] == 'boolean') {
    445. 

  445. 					$info['default'] = (boolean) substr($row['default'], 1, -1);
    446. 

  446. 				} else {
    447. 

  447. 					$info['default'] = $row['default'];
    448. 

  448. 				}
    449. 

  449. 			}
    450. 

  450. 			
    451. 

  451. 			// Handle not null
    452. 

  452. 			$info['not_null'] = ($row['nullable'] == 'N') ? TRUE : FALSE;
    453. 

  453. 			
    454. 

  454. 			$info['comment'] = $row['comment'];
    455. 

  455. 			
    456. 

  456. 			$column_info[$row['column']] = $info;
    457. 

  457. 		}
    458. 

  458. 		
    459. 

  459. 		return $column_info;
    460. 

  460. 	}
    461. 

  461. 	
    462. 

  462. 	
    463. 

  463. 	/**
    464. 

  464. 	 * Fetches the key info for a DB2 database
    465. 

  465. 	 * 
    466. 

  466. 	 * @return array  The keys arrays for every table in the database - see ::getKeys() for details
    467. 

  467. 	 */
    468. 

  468. 	private function fetchDB2Keys()
    469. 

  469. 	{
    470. 

  470. 		$keys = array();
    471. 

  471. 		
    472. 

  472. 		$default_schema = strtolower($this->database->getUsername());
    473. 

  473. 		
    474. 

  474. 		$tables = $this->getTables();
    475. 

  475. 		foreach ($tables as $table) {
    476. 

  476. 			$keys[$table] = array();
    477. 

  477. 			$keys[$table]['primary'] = array();
    478. 

  478. 			$keys[$table]['unique']  = array();
    479. 

  479. 			$keys[$table]['foreign'] = array();
    480. 

  480. 		}
    481. 

  481. 		
    482. 

  482. 		$params  = array();
    483. 

  483. 		
    484. 

  484. 		$sql  = "(SELECT
    485. 

  485. 					 LOWER(RTRIM(R.TABSCHEMA)) AS \"SCHEMA\",
    486. 

  486. 					 LOWER(R.TABNAME) AS \"TABLE\",
    487. 

  487. 					 R.CONSTNAME AS CONSTRAINT_NAME,
    488. 

  488. 					 'foreign' AS \"TYPE\",
    489. 

  489. 					 LOWER(K.COLNAME) AS \"COLUMN\",
    490. 

  490. 					 LOWER(RTRIM(R.REFTABSCHEMA)) AS FOREIGN_SCHEMA,
    491. 

  491. 					 LOWER(R.REFTABNAME) AS FOREIGN_TABLE,
    492. 

  492. 					 LOWER(FK.COLNAME) AS FOREIGN_COLUMN,
    493. 

  493. 					 CASE R.DELETERULE WHEN 'C' THEN 'cascade' WHEN 'A' THEN 'no_action' WHEN 'R' THEN 'restrict' ELSE 'set_null' END AS ON_DELETE,
    494. 

  494. 					 CASE R.UPDATERULE WHEN 'A' THEN 'no_action' WHEN 'R' THEN 'restrict' END AS ON_UPDATE,
    495. 

  495. 					 K.COLSEQ
    496. 

  496. 				 FROM
    497. 

  497. 					 SYSCAT.REFERENCES AS R INNER JOIN 
    498. 

  498. 					 SYSCAT.KEYCOLUSE AS K ON R.CONSTNAME = K.CONSTNAME AND R.TABSCHEMA = K.TABSCHEMA AND R.TABNAME = K.TABNAME INNER JOIN
    499. 

  499. 					 SYSCAT.KEYCOLUSE AS FK ON R.REFKEYNAME = FK.CONSTNAME AND R.REFTABSCHEMA = FK.TABSCHEMA AND R.REFTABNAME = FK.TABNAME
    500. 

  500. 				 WHERE ";
    501. 

  501. 		
    502. 

  502. 		$conditions = array();
    503. 

  503. 		foreach ($tables as $table) {
    504. 

  504. 			if (strpos($table, '.') === FALSE) {
    505. 

  505. 				$table = $default_schema . '.' . $table;
    506. 

  506. 			}	
    507. 

  507. 			list ($schema, $table) = explode('.', strtoupper($table));
    508. 

  508. 			$conditions[] = "R.TABSCHEMA = %s AND R.TABNAME = %s";
    509. 

  509. 			$params[] = $schema;
    510. 

  510. 			$params[] = $table;
    511. 

  511. 		}
    512. 

  512. 		$sql .= '((' . join(') OR( ', $conditions) . '))';
    513. 

  513. 		 
    514. 

  514. 		$sql .= "
    515. 

  515. 				 ) UNION (
    516. 

  516. 				 SELECT
    517. 

  517. 					 LOWER(RTRIM(I.TABSCHEMA)) AS \"SCHEMA\",
    518. 

  518. 					 LOWER(I.TABNAME) AS \"TABLE\",
    519. 

  519. 					 LOWER(I.INDNAME) AS CONSTRAINT_NAME,
    520. 

  520. 					 CASE I.UNIQUERULE WHEN 'U' THEN 'unique' ELSE 'primary' END AS \"TYPE\",
    521. 

  521. 					 LOWER(C.COLNAME) AS \"COLUMN\",
    522. 

  522. 					 NULL AS FOREIGN_SCHEMA,
    523. 

  523. 					 NULL AS FOREIGN_TABLE,
    524. 

  524. 					 NULL AS FOREIGN_COLUMN,
    525. 

  525. 					 NULL AS ON_DELETE,
    526. 

  526. 					 NULL AS ON_UPDATE,
    527. 

  527. 					 C.COLSEQ
    528. 

  528. 				 FROM
    529. 

  529. 					 SYSCAT.INDEXES AS I INNER JOIN
    530. 

  530. 					 SYSCAT.INDEXCOLUSE AS C ON I.INDSCHEMA = C.INDSCHEMA AND I.INDNAME = C.INDNAME
    531. 

  531. 				 WHERE
    532. 

  532. 					 I.UNIQUERULE IN ('U', 'P') AND
    533. 

  533. 					 ";
    534. 

  534. 		
    535. 

  535. 		$conditions = array();
    536. 

  536. 		foreach ($tables as $table) {
    537. 

  537. 			if (strpos($table, '.') === FALSE) {
    538. 

  538. 				$table = $default_schema . '.' . $table;
    539. 

  539. 			}	
    540. 

  540. 			list ($schema, $table) = explode('.', strtoupper($table));
    541. 

  541. 			$conditions[] = "I.TABSCHEMA = %s AND I.TABNAME = %s";
    542. 

  542. 			$params[] = $schema;
    543. 

  543. 			$params[] = $table;
    544. 

  544. 		}
    545. 

  545. 		$sql .= '((' . join(') OR( ', $conditions) . '))';
    546. 

  546. 		
    547. 

  547. 		$sql .= "
    548. 

  548. 				 )
    549. 

  549. 				 ORDER BY 4, 1, 2, 3, 11";
    550. 

  550. 		
    551. 

  551. 		$result = $this->database->query($sql, $params);
    552. 

  552. 		
    553. 

  553. 		$last_name  = '';
    554. 

  554. 		$last_table = '';
    555. 

  555. 		$last_type  = '';
    556. 

  556. 		foreach ($result as $row) {
    557. 

  557. 			
    558. 

  558. 			if ($row['constraint_name'] != $last_name) {
    559. 

  559. 				
    560. 

  560. 				if ($last_name) {
    561. 

  561. 					if ($last_type == 'foreign' || $last_type == 'unique') {
    562. 

  562. 						$keys[$last_table][$last_type][] = $temp;
    563. 

  563. 					} else {
    564. 

  564. 						$keys[$last_table][$last_type] = $temp;
    565. 

  565. 					}
    566. 

  566. 				}
    567. 

  567. 				
    568. 

  568. 				$temp = array();
    569. 

  569. 				if ($row['type'] == 'foreign') {
    570. 

  570. 					
    571. 

  571. 					$temp['column']         = $row['column'];
    572. 

  572. 					$temp['foreign_table']  = $row['foreign_table'];
    573. 

  573. 					if ($row['foreign_schema'] != $default_schema) {
    574. 

  574. 						$temp['foreign_table'] = $row['foreign_schema'] . '.' . $temp['foreign_table'];
    575. 

  575. 					}
    576. 

  576. 					$temp['foreign_column'] = $row['foreign_column'];
    577. 

  577. 					$temp['on_delete']      = 'no_action';
    578. 

  578. 					$temp['on_update']      = 'no_action';
    579. 

  579. 					
    580. 

  580. 					if (!empty($row['on_delete'])) {
    581. 

  581. 						$temp['on_delete'] = $row['on_delete'];
    582. 

  582. 					}
    583. 

  583. 					if (!empty($row['on_update'])) {
    584. 

  584. 						$temp['on_update'] = $row['on_update'];
    585. 

  585. 					}
    586. 

  586. 					
    587. 

  587. 				} else {
    588. 

  588. 					$temp[] = $row['column'];
    589. 

  589. 				}
    590. 

  590. 				
    591. 

  591. 				$last_table = $row['table'];
    592. 

  592. 				if ($row['schema'] != $default_schema) {
    593. 

  593. 					$last_table = $row['schema'] . '.' . $last_table;
    594. 

  594. 				}
    595. 

  595. 				$last_name  = $row['constraint_name'];
    596. 

  596. 				$last_type  = $row['type'];
    597. 

  597. 				
    598. 

  598. 			} else {
    599. 

  599. 				$temp[] = $row['column'];
    600. 

  600. 			}
    601. 

  601. 		}
    602. 

  602. 		
    603. 

  603. 		if (isset($temp)) {
    604. 

  604. 			if ($last_type == 'foreign' || $last_type == 'unique') {
    605. 

  605. 				$keys[$last_table][$last_type][] = $temp;
    606. 

  606. 			} else {
    607. 

  607. 				$keys[$last_table][$last_type] = $temp;
    608. 

  608. 			}
    609. 

  609. 		}
    610. 

  610. 		
    611. 

  611. 		return $keys;
    612. 

  612. 	}
    613. 

  613. 	
    614. 

  614. 	
    615. 

  615. 	/**
    616. 

  616. 	 * Gets the `PRIMARY KEY`, `FOREIGN KEY` and `UNIQUE` key constraints from the database
    617. 

  617. 	 * 
    618. 

  618. 	 * @return void
    619. 

  619. 	 */
    620. 

  620. 	private function fetchKeys()
    621. 

  621. 	{
    622. 

  622. 		if ($this->keys) {
    623. 

  623. 			return;	
    624. 

  624. 		}
    625. 

  625. 		
    626. 

  626. 		switch ($this->database->getType()) {
    627. 

  627. 			case 'db2':
    628. 

  628. 				$keys = $this->fetchDB2Keys();
    629. 

  629. 				break;
    630. 

  630. 			
    631. 

  631. 			case 'mssql':
    632. 

  632. 				$keys = $this->fetchMSSQLKeys();
    633. 

  633. 				break;
    634. 

  634. 				
    635. 

  635. 			case 'mysql':
    636. 

  636. 				$keys = $this->fetchMySQLKeys();
    637. 

  637. 				break;
    638. 

  638. 				
    639. 

  639. 			case 'oracle':
    640. 

  640. 				$keys = $this->fetchOracleKeys();
    641. 

  641. 				break;
    642. 

  642. 			
    643. 

  643. 			case 'postgresql':
    644. 

  644. 				$keys = $this->fetchPostgreSQLKeys();
    645. 

  645. 				break;
    646. 

  646. 			
    647. 

  647. 			case 'sqlite':
    648. 

  648. 				$keys = $this->fetchSQLiteKeys();
    649. 

  649. 				break;
    650. 

  650. 		}
    651. 

  651. 		
    652. 

  652. 		$this->keys = $keys;
    653. 

  653. 		if ($this->cache) {
    654. 

  654. 			$this->cache->set($this->makeCachePrefix() . 'keys', $this->keys);	
    655. 

  655. 		}
    656. 

  656. 	}
    657. 

  657. 	
    658. 

  658. 	
    659. 

  659. 	/**
    660. 

  660. 	 * Gets the column info from a MSSQL database
    661. 

  661. 	 * 
    662. 

  662. 	 * @param  string $table  The table to fetch the column info for
    663. 

  663. 	 * @return array  The column info for the table specified - see ::getColumnInfo() for details
    664. 

  664. 	 */
    665. 

  665. 	private function fetchMSSQLColumnInfo($table)
    666. 

  666. 	{
    667. 

  667. 		$column_info = array();
    668. 

  668. 		
    669. 

  669. 		$schema = 'dbo';
    670. 

  670. 		if (strpos($table, '.') !== FALSE) {
    671. 

  671. 			list ($schema, $table) = explode('.', $table);
    672. 

  672. 		}
    673. 

  673. 		
    674. 

  674. 		$data_type_mapping = array(
    675. 

  675. 			'bit'               => 'boolean',
    676. 

  676. 			'tinyint'           => 'integer',
    677. 

  677. 			'smallint'          => 'integer',
    678. 

  678. 			'int'               => 'integer',
    679. 

  679. 			'bigint'            => 'integer',
    680. 

  680. 			'timestamp'         => 'integer',
    681. 

  681. 			'datetime'          => 'timestamp',
    682. 

  682. 			'smalldatetime'     => 'timestamp',
    683. 

  683. 			'datetime2'         => 'timestamp',
    684. 

  684. 			'date'              => 'date',
    685. 

  685. 			'time'              => 'time',
    686. 

  686. 			'varchar'           => 'varchar',
    687. 

  687. 			'nvarchar'          => 'varchar',
    688. 

  688. 			'uniqueidentifier'  => 'varchar',
    689. 

  689. 			'char'              => 'char',
    690. 

  690. 			'nchar'             => 'char',
    691. 

  691. 			'real'              => 'float',
    692. 

  692. 			'float'             => 'float',
    693. 

  693. 			'money'             => 'float',
    694. 

  694. 			'smallmoney'        => 'float',
    695. 

  695. 			'decimal'           => 'float',
    696. 

  696. 			'numeric'           => 'float',
    697. 

  697. 			'binary'            => 'blob',
    698. 

  698. 			'varbinary'         => 'blob',
    699. 

  699. 			'image'             => 'blob',
    700. 

  700. 			'text'              => 'text',
    701. 

  701. 			'ntext'             => 'text',
    702. 

  702. 			'xml'               => 'text'
    703. 

  703. 		);
    704. 

  704. 		
    705. 

  705. 		$max_min_values = array(
    706. 

  706. 			'tinyint'    => array('min' => new fNumber(0),                       'max' => new fNumber(255)),
    707. 

  707. 			'smallint'   => array('min' => new fNumber(-32768),                  'max' => new fNumber(32767)),
    708. 

  708. 			'int'        => array('min' => new fNumber(-2147483648),             'max' => new fNumber(2147483647)),
    709. 

  709. 			'bigint'     => array('min' => new fNumber('-9223372036854775808'),  'max' => new fNumber('9223372036854775807')),
    710. 

  710. 			'smallmoney' => array('min' => new fNumber('-214748.3648'),          'max' => new fNumber('214748.3647')),
    711. 

  711. 			'money'      => array('min' => new fNumber('-922337203685477.5808'), 'max' => new fNumber('922337203685477.5807'))
    712. 

  712. 		);
    713. 

  713. 		
    714. 

  714. 		if (!$this->version) {
    715. 

  715. 			$this->version = (int) $this->database->query("SELECT CAST(SERVERPROPERTY('productversion') AS VARCHAR(20))")->fetchScalar();
    716. 

  716. 			if ($this->cache) {
    717. 

  717. 				$this->cache->set($this->makeCachePrefix() . 'version', $this->version);
    718. 

  718. 			}
    719. 

  719. 		}
    720. 

  720. 		
    721. 

  721. 		// Get the column info
    722. 

  722. 		$sql = "SELECT
    723. 

  723. 						c.column_name              AS 'column',
    724. 

  724. 						c.data_type                AS 'type',
    725. 

  725. 						c.is_nullable              AS nullable,
    726. 

  726. 						c.column_default           AS 'default',
    727. 

  727. 						c.character_maximum_length AS max_length,
    728. 

  728. 						c.numeric_precision        AS precision,
    729. 

  729. 						c.numeric_scale            AS decimal_places,
    730. 

  730. 						CASE
    731. 

  731. 							WHEN
    732. 

  732. 							  COLUMNPROPERTY(OBJECT_ID(QUOTENAME(c.table_schema) + '.' + QUOTENAME(c.table_name)), c.column_name, 'IsIdentity') = 1 AND
    733. 

  733. 							  OBJECTPROPERTY(OBJECT_ID(QUOTENAME(c.table_schema) + '.' + QUOTENAME(c.table_name)), 'IsMSShipped') = 0
    734. 

  734. 							THEN '1'
    735. 

  735. 							ELSE '0'
    736. 

  736. 						  END AS auto_increment,
    737. 

  737. 						cc.check_clause AS 'constraint',
    738. 

  738. 						CAST(ex.value AS VARCHAR(7500)) AS 'comment'
    739. 

  739. 					FROM
    740. 

  740. 						INFORMATION_SCHEMA.COLUMNS AS c LEFT JOIN
    741. 

  741. 						INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE AS ccu ON c.column_name = ccu.column_name AND c.table_name = ccu.table_name AND c.table_catalog = ccu.table_catalog LEFT JOIN
    742. 

  742. 						INFORMATION_SCHEMA.CHECK_CONSTRAINTS AS cc ON ccu.constraint_name = cc.constraint_name AND ccu.constraint_catalog = cc.constraint_catalog";
    743. 

  743. 		
    744. 

  744. 		if ($this->version < 9) {
    745. 

  745. 			$sql .= " LEFT JOIN sysproperties AS ex ON ex.id = OBJECT_ID(QUOTENAME(c.table_schema) + '.' + QUOTENAME(c.table_name)) AND ex.smallid = c.ordinal_position AND ex.name = 'MS_Description' AND OBJECTPROPERTY(OBJECT_ID(QUOTENAME(c.table_schema) + '.' + QUOTENAME(c.table_name)), 'IsMsShipped') = 0 ";
    746. 

  746. 		} else {
    747. 

  747. 			$sql .= " LEFT JOIN SYS.EXTENDED_PROPERTIES AS ex ON ex.major_id = OBJECT_ID(QUOTENAME(c.table_schema) + '.' + QUOTENAME(c.table_name)) AND ex.minor_id = c.ordinal_position AND ex.name = 'MS_Description' AND OBJECTPROPERTY(OBJECT_ID(QUOTENAME(c.table_schema) + '.' + QUOTENAME(c.table_name)), 'IsMsShipped') = 0 ";
    748. 

  748. 		}
    749. 

  749. 		
    750. 

  750. 		$sql .= "
    751. 

  751. 					WHERE
    752. 

  752. 						c.table_name = %s AND
    753. 

  753. 						c.table_schema = %s AND
    754. 

  754. 						c.table_catalog = DB_NAME()";
    755. 

  755. 		
    756. 

  756. 		$result = $this->database->query($sql, $table, $schema);
    757. 

  757. 		
    758. 

  758. 		foreach ($result as $row) {
    759. 

  759. 			
    760. 

  760. 			$info = array();
    761. 

  761. 			
    762. 

  762. 			foreach ($data_type_mapping as $data_type => $mapped_data_type) {
    763. 

  763. 				if (stripos($row['type'], $data_type) === 0) {
    764. 

  764. 					if (isset($max_min_values[$data_type])) {
    765. 

  765. 						$info['min_value'] = $max_min_values[$data_type]['min'];
    766. 

  766. 						$info['max_value'] = $max_min_values[$data_type]['max'];
    767. 

  767. 					}
    768. 

  768. 					$info['type'] = $mapped_data_type;
    769. 

  769. 					break;
    770. 

  770. 				}
    771. 

  771. 			}
    772. 

  772. 			
    773. 

  773. 			// Handle decimal places and min/max for numeric/decimals
    774. 

  774. 			if (in_array(strtolower($row['type']), array('decimal', 'numeric'))) {
    775. 

  775. 				$info['decimal_places'] = $row['decimal_places'];
    776. 

  776. 				$before_digits = str_pad('', $row['precision'] - $row['decimal_places'], '9');
    777. 

  777. 				$after_digits  = str_pad('', $row['decimal_places'], '9');
    778. 

  778. 				$max_min       = $before_digits . ($after_digits ? '.' : '') . $after_digits;
    779. 

  779. 				$info['min_value'] = new fNumber('-' . $max_min);
    780. 

  780. 				$info['max_value'] = new fNumber($max_min);
    781. 

  781. 			}
    782. 

  782. 			
    783. 

  783. 			if (!isset($info['type'])) {
    784. 

  784. 				$info['type'] = $row['type'];
    785. 

  785. 			}
    786. 

  786. 			
    787. 

  787. 			// Handle decimal places for money/smallmoney
    788. 

  788. 			if (in_array($row['type'], array('money', 'smallmoney'))) {
    789. 

  789. 				$info['decimal_places'] = 2;
    790. 

  790. 			}
    791. 

  791. 			
    792. 

  792. 			// Handle the special data for varchar columns
    793. 

  793. 			if (in_array($info['type'], array('char', 'varchar', 'text', 'blob'))) {
    794. 

  794. 				if ($row['type'] == 'uniqueidentifier') {
    795. 

  795. 					$row['max_length'] = 32;
    796. 

  796. 				} elseif ($row['max_length'] == -1) {
    797. 

  797. 					$row['max_length'] = $row['type'] == 'nvarchar' ? 1073741823 : 2147483647;
    798. 

  798. 				}
    799. 

  799. 				$info['max_length'] = $row['max_length'];
    800. 

  800. 			}
    801. 

  801. 			
    802. 

  802. 			// If the column has a constraint, look for valid values
    803. 

  803. 			if (in_array($info['type'], array('char', 'varchar')) && !empty($row['constraint'])) {
    804. 

  804. 				if (preg_match('#^\(((?:(?: OR )?\[[^\]]+\]\s*=\s*\'(?:\'\'|[^\']+)+\')+)\)$#D', $row['constraint'], $matches)) {
    805. 

  805. 					$valid_values = explode(' OR ', $matches[1]);
    806. 

  806. 					foreach ($valid_values as $key => $value) {
    807. 

  807. 						$value = preg_replace('#^\s*\[' . preg_quote($row['column'], '#') . '\]\s*=\s*\'(.*)\'\s*$#', '\1', $value);
    808. 

  808. 						$valid_values[$key] = str_replace("''", "'", $value);
    809. 

  809. 					}
    810. 

  810. 					// SQL Server turns CHECK constraint values into a reversed list, so we fix it here
    811. 

  811. 					$info['valid_values'] = array_reverse($valid_values);
    812. 

  812. 				}
    813. 

  813. 			}
    814. 

  814. 			
    815. 

  815. 			// Handle auto increment
    816. 

  816. 			if ($row['auto_increment']) {
    817. 

  817. 				$info['auto_increment'] = TRUE;
    818. 

  818. 			}
    819. 

  819. 			
    820. 

  820. 			// Handle default values
    821. 

  821. 			if ($row['default'] !== NULL) {
    822. 

  822. 				if ($row['default'] == '(getdate())') {
    823. 

  823. 					$info['default'] = 'CURRENT_TIMESTAMP';
    824. 

  824. 				} elseif (in_array($info['type'], array('char', 'varchar', 'text', 'timestamp')) ) {
    825. 

  825. 					$info['default'] = substr($row['default'], 2, -2);
    826. 

  826. 				} elseif ($info['type'] == 'boolean') {
    827. 

  827. 					$info['default'] = (boolean) substr($row['default'], 2, -2);
    828. 

  828. 				} elseif (in_array($info['type'], array('integer', 'float')) ) {
    829. 

  829. 					$info['default'] = str_replace(array('(', ')'), '', $row['default']);
    830. 

  830. 				} else {
    831. 

  831. 					$info['default'] = pack('H*', substr($row['default'], 3, -1));
    832. 

  832. 				}
    833. 

  833. 			}
    834. 

  834. 			
    835. 

  835. 			// Handle not null
    836. 

  836. 			$info['not_null'] = ($row['nullable'] == 'NO') ? TRUE : FALSE;
    837. 

  837. 			
    838. 

  838. 			$info['comment'] = $row['comment'];
    839. 

  839. 			
    840. 

  840. 			$column_info[$row['column']] = $info;
    841. 

  841. 		}
    842. 

  842. 		
    843. 

  843. 		return $column_info;
    844. 

  844. 	}
    845. 

  845. 	
    846. 

  846. 	
    847. 

  847. 	/**
    848. 

  848. 	 * Fetches the key info for an MSSQL database
    849. 

  849. 	 * 
    850. 

  850. 	 * @return array  The key info arrays for every table in the database - see ::getKeys() for details
    851. 

  851. 	 */
    852. 

  852. 	private function fetchMSSQLKeys()
    853. 

  853. 	{
    854. 

  854. 		$keys = array();
    855. 

  855. 		
    856. 

  856. 		$tables   = $this->getTables();
    857. 

  857. 		foreach ($tables as $table) {
    858. 

  858. 			$keys[$table] = array();
    859. 

  859. 			$keys[$table]['primary'] = array();
    860. 

  860. 			$keys[$table]['unique']  = array();
    861. 

  861. 			$keys[$table]['foreign'] = array();
    862. 

  862. 		}
    863. 

  863. 		
    864. 

  864. 		$sql  = "SELECT
    865. 

  865. 						c.table_schema AS \"schema\",
    866. 

  866. 						c.table_name AS \"table\",
    867. 

  867. 						kcu.constraint_name AS constraint_name,
    868. 

  868. 						CASE c.constraint_type
    869. 

  869. 							WHEN 'PRIMARY KEY' THEN 'primary'
    870. 

  870. 							WHEN 'FOREIGN KEY' THEN 'foreign'
    871. 

  871. 							WHEN 'UNIQUE' THEN 'unique'
    872. 

  872. 						END AS 'type',
    873. 

  873. 						kcu.column_name AS 'column',
    874. 

  874. 						ccu.table_schema AS foreign_schema,
    875. 

  875. 						ccu.table_name AS foreign_table,
    876. 

  876. 						ccu.column_name AS foreign_column,
    877. 

  877. 						REPLACE(LOWER(rc.delete_rule), ' ', '_') AS on_delete,
    878. 

  878. 						REPLACE(LOWER(rc.update_rule), ' ', '_') AS on_update
    879. 

  879. 					FROM
    880. 

  880. 						INFORMATION_SCHEMA.TABLE_CONSTRAINTS AS c INNER JOIN
    881. 

  881. 						INFORMATION_SCHEMA.KEY_COLUMN_USAGE AS kcu ON c.table_name = kcu.table_name AND c.constraint_name = kcu.constraint_name LEFT JOIN
    882. 

  882. 						INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS AS rc ON c.constraint_name = rc.constraint_name LEFT JOIN
    883. 

  883. 						INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE AS ccu ON ccu.constraint_name = rc.unique_constraint_name
    884. 

  884. 					WHERE
    885. 

  885. 						c.constraint_catalog = DB_NAME() AND
    886. 

  886. 						c.table_name != 'sysdiagrams'
    887. 

  887. 					ORDER BY
    888. 

  888. 						LOWER(c.table_schema),
    889. 

  889. 						LOWER(c.table_name),
    890. 

  890. 						c.constraint_type,
    891. 

  891. 						LOWER(kcu.constraint_name),
    892. 

  892. 						kcu.ordinal_position,
    893. 

  893. 						LOWER(kcu.column_name)";
    894. 

  894. 		
    895. 

  895. 		$result = $this->database->query($sql);
    896. 

  896. 		
    897. 

  897. 		$last_name  = '';
    898. 

  898. 		$last_table = '';
    899. 

  899. 		$last_type  = '';
    900. 

  900. 		foreach ($result as $row) {
    901. 

  901. 			
    902. 

  902. 			if ($row['constraint_name'] != $last_name) {
    903. 

  903. 				
    904. 

  904. 				if ($last_name) {
    905. 

  905. 					if ($last_type == 'foreign' || $last_type == 'unique') {
    906. 

  906. 						if (!isset($keys[$last_table][$last_type])) {
    907. 

  907. 							$keys[$last_table][$last_type] = array();		
    908. 

  908. 						}
    909. 

  909. 						$keys[$last_table][$last_type][] = $temp;
    910. 

  910. 					} else {
    911. 

  911. 						$keys[$last_table][$last_type] = $temp;
    912. 

  912. 					}
    913. 

  913. 				}
    914. 

  914. 				
    915. 

  915. 				$temp = array();
    916. 

  916. 				if ($row['type'] == 'foreign') {
    917. 

  917. 					
    918. 

  918. 					$temp['column']         = $row['column'];
    919. 

  919. 					$temp['foreign_table']  = $row['foreign_table'];
    920. 

  920. 					if ($row['foreign_schema'] != 'dbo') {
    921. 

  921. 						 $temp['foreign_table'] = $row['foreign_schema'] . '.' . $temp['foreign_table'];	
    922. 

  922. 					}
    923. 

  923. 					$temp['foreign_column'] = $row['foreign_column'];
    924. 

  924. 					$temp['on_delete']      = 'no_action';
    925. 

  925. 					$temp['on_update']      = 'no_action';
    926. 

  926. 					if (!empty($row['on_delete'])) {
    927. 

  927. 						$temp['on_delete'] = $row['on_delete'];
    928. 

  928. 					}
    929. 

  929. 					if (!empty($row['on_update'])) {
    930. 

  930. 						$temp['on_update'] = $row['on_update'];
    931. 

  931. 					}
    932. 

  932. 					
    933. 

  933. 				} else {
    934. 

  934. 					$temp[] = $row['column'];
    935. 

  935. 				}
    936. 

  936. 				
    937. 

  937. 				$last_table = $row['table'];
    938. 

  938. 				if ($row['schema'] != 'dbo') {
    939. 

  939. 					$last_table = $row['schema'] . '.' . $last_table;	
    940. 

  940. 				}
    941. 

  941. 				$last_name  = $row['constraint_name'];
    942. 

  942. 				$last_type  = $row['type'];
    943. 

  943. 				
    944. 

  944. 			} else {
    945. 

  945. 				$temp[] = $row['column'];
    946. 

  946. 			}
    947. 

  947. 		}
    948. 

  948. 		
    949. 

  949. 		if (isset($temp)) {
    950. 

  950. 			if ($last_type == 'foreign' || $last_type == 'unique') {
    951. 

  951. 				if (!isset($keys[$last_table][$last_type])) {
    952. 

  952. 					$keys[$last_table][$last_type] = array();		
    953. 

  953. 				}
    954. 

  954. 				$keys[$last_table][$last_type][] = $temp;
    955. 

  955. 			} else {
    956. 

  956. 				$keys[$last_table][$last_type] = $temp;
    957. 

  957. 			}
    958. 

  958. 		}
    959. 

  959. 		
    960. 

  960. 		return $keys;
    961. 

  961. 	}
    962. 

  962. 	
    963. 

  963. 	
    964. 

  964. 	/**
    965. 

  965. 	 * Gets the column info from a MySQL database
    966. 

  966. 	 * 
    967. 

  967. 	 * @param  string $table  The table to fetch the column info for
    968. 

  968. 	 * @return array  The column info for the table specified - see ::getColumnInfo() for details
    969. 

  969. 	 */
    970. 

  970. 	private function fetchMySQLColumnInfo($table)
    971. 

  971. 	{
    972. 

  972. 		$data_type_mapping = array(
    973. 

  973. 			'tinyint'			=> 'integer',
    974. 

  974. 			'smallint'			=> 'integer',
    975. 

  975. 			'mediumint'         => 'integer',
    976. 

  976. 			'int'				=> 'integer',
    977. 

  977. 			'bigint'			=> 'integer',
    978. 

  978. 			'datetime'			=> 'timestamp',
    979. 

  979. 			'timestamp'			=> 'timestamp',
    980. 

  980. 			'date'				=> 'date',
    981. 

  981. 			'time'				=> 'time',
    982. 

  982. 			'enum'				=> 'varchar',
    983. 

  983. 			'set'               => 'varchar',
    984. 

  984. 			'varchar'			=> 'varchar',
    985. 

  985. 			'char'				=> 'char',
    986. 

  986. 			'float'				=> 'float',
    987. 

  987. 			'double'			=> 'float',
    988. 

  988. 			'decimal'			=> 'float',
    989. 

  989. 			'binary'            => 'blob',
    990. 

  990. 			'varbinary'         => 'blob',
    991. 

  991. 			'tinyblob'			=> 'blob',
    992. 

  992. 			'blob'				=> 'blob',
    993. 

  993. 			'mediumblob'		=> 'blob',
    994. 

  994. 			'longblob'			=> 'blob',
    995. 

  995. 			'tinytext'			=> 'text',
    996. 

  996. 			'text'				=> 'text',
    997. 

  997. 			'mediumtext'		=> 'text',
    998. 

  998. 			'longtext'			=> 'text'
    999. 

  999. 		);
    1000. 

  1000. 		
    1001. 

  1001. 		$max_min_values = array(
    1002. 

  1002. 			'tinyint'             => array('min' => new fNumber(-128),                    'max' => new fNumber(127)),
    1003. 

  1003. 			'unsigned tinyint'    => array('min' => new fNumber(0),                       'max' => new fNumber(255)),
    1004. 

  1004. 			'smallint'            => array('min' => new fNumber(-32768),                  'max' => new fNumber(32767)),
    1005. 

  1005. 			'unsigned smallint'   => array('min' => new fNumber(0),                       'max' => new fNumber(65535)),
    1006. 

  1006. 			'mediumint'           => array('min' => new fNumber(-8388608),                'max' => new fNumber(8388607)),
    1007. 

  1007. 			'unsigned mediumint'  => array('min' => new fNumber(0),                       'max' => new fNumber(16777215)),
    1008. 

  1008. 			'int'                 => array('min' => new fNumber(-2147483648),             'max' => new fNumber(2147483647)),
    1009. 

  1009. 			'unsigned int'        => array('min' => new fNumber(0),                       'max' => new fNumber('4294967295')),
    1010. 

  1010. 			'bigint'              => array('min' => new fNumber('-9223372036854775808'),  'max' => new fNumber('9223372036854775807')),
    1011. 

  1011. 			'unsigned bigint'     => array('min' => new fNumber(0),                       'max' => new fNumber('18446744073709551615'))
    1012. 

  1012. 		);
    1013. 

  1013. 		
    1014. 

  1014. 		$column_info = array();
    1015. 

  1015. 		
    1016. 

  1016. 		$result     = $this->database->query('SHOW CREATE TABLE %r', $table);
    1017. 

  1017. 		
    1018. 

  1018. 		try {
    1019. 

  1019. 			$row        = $result->fetchRow();
    1020. 

  1020. 			$create_sql = $row['Create Table'];
    1021. 

  1021. 		} catch (fNoRowsException $e) {
    1022. 

  1022. 			return array();
    1023. 

  1023. 		}
    1024. 

  1024. 		
    1025. 

  1025. 		preg_match_all('#(?<=,|\()\s+(?:"|\`)(\w+)(?:"|\`)\s+(?:([a-z]+)(?:\(([^)]+)\))?( unsigned)?(?: zerofill)?)(?: character set [^ ]+)?(?: collate [^ ]+)?(?: NULL)?( NOT NULL)?(?: DEFAULT ((?:[^, \']*|\'(?:\'\'|[^\']+)*\')))?( auto_increment)?( COMMENT \'(?:\'\'|[^\']+)*\')?( ON UPDATE CURRENT_TIMESTAMP)?\s*(?:,|\s*(?=\)))#mi', $create_sql, $matches, PREG_SET_ORDER);
    1026. 

  1026. 		
    1027. 

  1027. 		foreach ($matches as $match) {
    1028. 

  1028. 			
    1029. 

  1029. 			$info = array();
    1030. 

  1030. 			
    1031. 

  1031. 			foreach ($data_type_mapping as $data_type => $mapped_data_type) {
    1032. 

  1032. 				if (stripos($match[2], $data_type) === 0) {
    1033. 

  1033. 					if ($match[2] == 'tinyint' && $match[3] == 1) {
    1034. 

  1034. 						$mapped_data_type = 'boolean';
    1035. 

  1035. 					
    1036. 

  1036. 					} elseif (preg_match('#((?:unsigned )?(?:tiny|small|medium|big)?int)#', (isset($match[4]) ? $match[4] . ' ' : '') . $data_type, $int_match)) {
    1037. 

  1037. 						if (isset($max_min_values[$int_match[1]])) {
    1038. 

  1038. 							$info['min_value'] = $max_min_values[$int_match[1]]['min'];
    1039. 

  1039. 							$info['max_value'] = $max_min_values[$int_match[1]]['max'];	
    1040. 

  1040. 						}
    1041. 

  1041. 					}
    1042. 

  1042. 					
    1043. 

  1043. 					$info['type'] = $mapped_data_type;
    1044. 

  1044. 					break;
    1045. 

  1045. 				}
    1046. 

  1046. 			}
    1047. 

  1047. 			if (!isset($info['type'])) {
    1048. 

  1048. 				$info['type'] = preg_replace('#^([a-z ]+).*$#iD', '\1', $match[2]);
    1049. 

  1049. 			}
    1050. 

  1050. 			
    1051. 

  1051. 			switch ($match[2]) {
    1052. 

  1052. 				case 'tinyblob':
    1053. 

  1053. 				case 'tinytext':
    1054. 

  1054. 					$info['max_length'] = 255;
    1055. 

  1055. 					break;
    1056. 

  1056. 				
    1057. 

  1057. 				case 'blob':
    1058. 

  1058. 				case 'text':
    1059. 

  1059. 					$info['max_length'] = 65535;
    1060. 

  1060. 					break;
    1061. 

  1061. 				
    1062. 

  1062. 				case 'mediumblob':
    1063. 

  1063. 				case 'mediumtext':
    1064. 

  1064. 					$info['max_length'] = 16777215;
    1065. 

  1065. 					break;
    1066. 

  1066. 				
    1067. 

  1067. 				case 'longblob':
    1068. 

  1068. 				case 'longtext':
    1069. 

  1069. 					$info['max_length'] = 4294967295;
    1070. 

  1070. 					break;
    1071. 

  1071. 			}
    1072. 

  1072. 		
    1073. 

  1073. 			if (stripos($match[2], 'enum') === 0) {
    1074. 

  1074. 				$info['valid_values'] = preg_replace("/^'|'\$/D", '', explode(",", $match[3]));
    1075. 

  1075. 				$match[3] = 0;
    1076. 

  1076. 				foreach ($info['valid_values'] as $valid_value) {
    1077. 

  1077. 					if (strlen(utf8_decode($valid_value)) > $match[3]) {
    1078. 

  1078. 						$match[3] = strlen(utf8_decode($valid_value));
    1079. 

  1079. 					}
    1080. 

  1080. 				}
    1081. 

  1081. 			}
    1082. 

  1082. 			
    1083. 

  1083. 			// The set data type is currently only supported as a varchar
    1084. 

  1084. 			// with a max length of all valid values concatenated by ,s
    1085. 

  1085. 			if (stripos($match[2], 'set') === 0) {
    1086. 

  1086. 				$values = preg_replace("/^'|'\$/D", '', explode(",", $match[3]));
    1087. 

  1087. 				$match[3] = strlen(join(',', $values));
    1088. 

  1088. 			}
    1089. 

  1089. 			
    1090. 

  1090. 			// Type specific information
    1091. 

  1091. 			if (in_array($info['type'], array('char', 'varchar'))) {
    1092. 

  1092. 				$info['max_length'] = $match[3];
    1093. 

  1093. 			}
    1094. 

  1094. 			
    1095. 

  1095. 			// Grab the number of decimal places
    1096. 

  1096. 			if (stripos($match[2], 'decimal') === 0) {
    1097. 

  1097. 				if (preg_match('#^\s*(\d+)\s*,\s*(\d+)\s*$#D', $match[3], $data_type_info)) {
    1098. 

  1098. 					$info['decimal_places'] = $data_type_info[2];
    1099. 

  1099. 					$before_digits = str_pad('', $data_type_info[1] - $info['decimal_places'], '9');
    1100. 

  1100. 					$after_digits  = str_pad('', $info['decimal_places'], '9');
    1101. 

  1101. 					$max_min       = $before_digits . ($after_digits ? '.' : '') . $after_digits;
    1102. 

  1102. 					$info['min_value'] = new fNumber('-' . $max_min);
    1103. 

  1103. 					$info['max_value'] = new fNumber($max_min);
    1104. 

  1104. 				}
    1105. 

  1105. 			}
    1106. 

  1106. 			
    1107. 

  1107. 			// Not null
    1108. 

  1108. 			$info['not_null'] = (!empty($match[5])) ? TRUE : FALSE;
    1109. 

  1109. 		
    1110. 

  1110. 			// Default values
    1111. 

  1111. 			if (!empty($match[6]) && $match[6] != 'NULL') {
    1112. 

  1112. 				$info['default'] = preg_replace("/^'|'\$/D", '', $match[6]);
    1113. 

  1113. 			}
    1114. 

  1114. 			
    1115. 

  1115. 			if ($info['type'] == 'boolean' && isset($info['default'])) {
    1116. 

  1116. 				$info['default'] = (boolean) $info['default'];
    1117. 

  1117. 			}
    1118. 

  1118. 		
    1119. 

  1119. 			// Auto increment fields
    1120. 

  1120. 			if (!empty($match[7])) {
    1121. 

  1121. 				$info['auto_increment'] = TRUE;
    1122. 

  1122. 			}
    1123. 

  1123. 			
    1124. 

  1124. 			// Column comments
    1125. 

  1125. 			if (!empty($match[8])) {
    1126. 

  1126. 				$info['comment'] = str_replace("''", "'", substr($match[8], 10, -1));
    1127. 

  1127. 			}
    1128. 

  1128. 		
    1129. 

  1129. 			$column_info[$match[1]] = $info;
    1130. 

  1130. 		}
    1131. 

  1131. 		
    1132. 

  1132. 		return $column_info;
    1133. 

  1133. 	}
    1134. 

  1134. 	
    1135. 

  1135. 	
    1136. 

  1136. 	/**
    1137. 

  1137. 	 * Fetches the keys for a MySQL database
    1138. 

  1138. 	 * 
    1139. 

  1139. 	 * @return array  The keys arrays for every table in the database - see ::getKeys() for details
    1140. 

  1140. 	 */
    1141. 

  1141. 	private function fetchMySQLKeys()
    1142. 

  1142. 	{
    1143. 

  1143. 		$tables   = $this->getTables();
    1144. 

  1144. 		$keys = array();
    1145. 

  1145. 		
    1146. 

  1146. 		foreach ($tables as $table) {
    1147. 

  1147. 			
    1148. 

  1148. 			$keys[$table] = array();
    1149. 

  1149. 			$keys[$table]['primary'] = array();
    1150. 

  1150. 			$keys[$table]['foreign'] = array();
    1151. 

  1151. 			$keys[$table]['unique']  = array();
    1152. 

  1152. 			
    1153. 

  1153. 			$result = $this->database->query('SHOW CREATE TABLE %r', $table);
    1154. 

  1154. 			$row    = $result->fetchRow();
    1155. 

  1155. 			
    1156. 

  1156. 			// Primary keys
    1157. 

  1157. 			preg_match_all('/PRIMARY KEY\s+\("(.*?)"\),?\n/U', $row['Create Table'], $matches, PREG_SET_ORDER);
    1158. 

  1158. 			if (!empty($matches)) {
    1159. 

  1159. 				$keys[$table]['primary'] = explode('","', $matches[0][1]);
    1160. 

  1160. 			}
    1161. 

  1161. 			
    1162. 

  1162. 			// Unique keys
    1163. 

  1163. 			preg_match_all('/UNIQUE KEY\s+"([^"]+)"\s+\("(.*?)"\),?\n/U', $row['Create Table'], $matches, PREG_SET_ORDER);
    1164. 

  1164. 			foreach ($matches as $match) {
    1165. 

  1165. 				$keys[$table]['unique'][] = explode('","', $match[2]);
    1166. 

  1166. 			}
    1167. 

  1167. 			
    1168. 

  1168. 			// Foreign keys
    1169. 

  1169. 			preg_match_all('#FOREIGN KEY \("([^"]+)"\) REFERENCES "([^"]+)" \("([^"]+)"\)(?:\sON\sDELETE\s(SET\sNULL|SET\sDEFAULT|CASCADE|NO\sACTION|RESTRICT))?(?:\sON\sUPDATE\s(SET\sNULL|SET\sDEFAULT|CASCADE|NO\sACTION|RESTRICT))?#', $row['Create Table'], $matches, PREG_SET_ORDER);
    1170. 

  1170. 			foreach ($matches as $match) {
    1171. 

  1171. 				$temp = array('column'         => $match[1],
    1172. 

  1172. 							  'foreign_table'  => $match[2],
    1173. 

  1173. 							  'foreign_column' => $match[3],
    1174. 

  1174. 							  'on_delete'      => 'no_action',
    1175. 

  1175. 							  'on_update'      => 'no_action');
    1176. 

  1176. 				if (!empty($match[4])) {
    1177. 

  1177. 					$temp['on_delete'] = strtolower(str_replace(' ', '_', $match[4]));
    1178. 

  1178. 				}
    1179. 

  1179. 				if (!empty($match[5])) {
    1180. 

  1180. 					$temp['on_update'] = strtolower(str_replace(' ', '_', $match[5]));
    1181. 

  1181. 				}
    1182. 

  1182. 				$keys[$table]['foreign'][] = $temp;
    1183. 

  1183. 			}
    1184. 

  1184. 		}
    1185. 

  1185. 		
    1186. 

  1186. 		return $keys;
    1187. 

  1187. 	}
    1188. 

  1188. 	
    1189. 

  1189. 	
    1190. 

  1190. 	/**
    1191. 

  1191. 	 * Gets the column info from an Oracle database
    1192. 

  1192. 	 * 
    1193. 

  1193. 	 * @param  string $table  The table to fetch the column info for
    1194. 

  1194. 	 * @return array  The column info for the table specified - see ::getColumnInfo() for details
    1195. 

  1195. 	 */
    1196. 

  1196. 	private function fetchOracleColumnInfo($table)
    1197. 

  1197. 	{
    1198. 

  1198. 		$table = strtoupper($table);
    1199. 

  1199. 		
    1200. 

  1200. 		$schema = strtoupper($this->database->getUsername());
    1201. 

  1201. 		if (strpos($table, '.') !== FALSE) {
    1202. 

  1202. 			list ($schema, $table) = explode('.', $table);
    1203. 

  1203. 		}
    1204. 

  1204. 		
    1205. 

  1205. 		$column_info = array();
    1206. 

  1206. 		
    1207. 

  1207. 		$data_type_mapping = array(
    1208. 

  1208. 			'boolean'			=> 'boolean',
    1209. 

  1209. 			'number'            => 'integer',
    1210. 

  1210. 			'integer'			=> 'integer',
    1211. 

  1211. 			'timestamp'			=> 'timestamp',
    1212. 

  1212. 			'date'				=> 'date',
    1213. 

  1213. 			'varchar2'          => 'varchar',
    1214. 

  1214. 			'nvarchar2'			=> 'varchar',
    1215. 

  1215. 			'char'              => 'char',
    1216. 

  1216. 			'nchar'             => 'char',
    1217. 

  1217. 			'float'				=> 'float',
    1218. 

  1218. 			'binary_float'      => 'float',
    1219. 

  1219. 			'binary_double'     => 'float',
    1220. 

  1220. 			'blob'				=> 'blob',
    1221. 

  1221. 			'bfile'             => 'varchar',
    1222. 

  1222. 			'clob'				=> 'text',
    1223. 

  1223. 			'nclob'             => 'text'
    1224. 

  1224. 		);
    1225. 

  1225. 		
    1226. 

  1226. 		$sql = "SELECT
    1227. 

  1227. 						LOWER(ATC.COLUMN_NAME) COLUMN_NAME,
    1228. 

  1228. 						CASE
    1229. 

  1229. 							WHEN
    1230. 

  1230. 								ATC.DATA_TYPE = 'NUMBER' AND
    1231. 

  1231. 								ATC.DATA_PRECISION IS NULL AND
    1232. 

  1232. 								ATC.DATA_SCALE = 0
    1233. 

  1233. 							THEN
    1234. 

  1234. 								'integer'
    1235. 

  1235. 							WHEN
    1236. 

  1236. 								ATC.DATA_TYPE = 'NUMBER' AND
    1237. 

  1237. 								ATC.DATA_PRECISION = 1 AND
    1238. 

  1238. 								ATC.DATA_SCALE = 0
    1239. 

  1239. 							THEN
    1240. 

  1240. 								'boolean'
    1241. 

  1241. 							WHEN
    1242. 

  1242. 								ATC.DATA_TYPE = 'NUMBER' AND
    1243. 

  1243. 								ATC.DATA_PRECISION IS NOT NULL AND
    1244. 

  1244. 								ATC.DATA_SCALE != 0 AND
    1245. 

  1245. 								ATC.DATA_SCALE IS NOT NULL
    1246. 

  1246. 							THEN
    1247. 

  1247. 								'float'
    1248. 

  1248. 							ELSE
    1249. 

  1249. 								LOWER(ATC.DATA_TYPE)
    1250. 

  1250. 							END DATA_TYPE,
    1251. 

  1251. 						CASE
    1252. 

  1252. 							WHEN
    1253. 

  1253. 								ATC.CHAR_LENGTH <> 0
    1254. 

  1254. 							THEN
    1255. 

  1255. 								ATC.CHAR_LENGTH
    1256. 

  1256. 							WHEN
    1257. 

  1257. 								ATC.DATA_TYPE = 'NUMBER' AND
    1258. 

  1258. 								ATC.DATA_PRECISION != 1 AND
    1259. 

  1259. 								ATC.DATA_SCALE != 0	AND
    1260. 

  1260. 								ATC.DATA_PRECISION IS NOT NULL
    1261. 

  1261. 							THEN
    1262. 

  1262. 								ATC.DATA_SCALE
    1263. 

  1263. 							ELSE
    1264. 

  1264. 								NULL
    1265. 

  1265. 							END LENGTH,
    1266. 

  1266. 						ATC.DATA_PRECISION PRECISION,
    1267. 

  1267. 						ATC.NULLABLE,
    1268. 

  1268. 						ATC.DATA_DEFAULT,
    1269. 

  1269. 						AC.SEARCH_CONDITION CHECK_CONSTRAINT,
    1270. 

  1270. 						ACCM.COMMENTS
    1271. 

  1271. 					FROM
    1272. 

  1272. 						ALL_TAB_COLUMNS ATC LEFT JOIN
    1273. 

  1273. 						ALL_CONS_COLUMNS ACC ON
    1274. 

  1274. 							ATC.OWNER = ACC.OWNER AND
    1275. 

  1275. 							ATC.COLUMN_NAME = ACC.COLUMN_NAME AND
    1276. 

  1276. 							ATC.TABLE_NAME = ACC.TABLE_NAME AND
    1277. 

  1277. 							ACC.POSITION IS NULL LEFT JOIN
    1278. 

  1278. 						ALL_CONSTRAINTS AC ON
    1279. 

  1279. 							AC.OWNER = ACC.OWNER AND
    1280. 

  1280. 							AC.CONSTRAINT_NAME = ACC.CONSTRAINT_NAME AND
    1281. 

  1281. 							AC.CONSTRAINT_TYPE = 'C' AND
    1282. 

  1282. 							AC.STATUS = 'ENABLED' LEFT JOIN
    1283. 

  1283. 						ALL_COL_COMMENTS ACCM ON
    1284. 

  1284. 							ATC.OWNER = ACCM.OWNER AND
    1285. 

  1285. 							ATC.COLUMN_NAME = ACCM.COLUMN_NAME AND
    1286. 

  1286. 							ATC.TABLE_NAME = ACCM.TABLE_NAME
    1287. 

  1287. 					WHERE
    1288. 

  1288. 						ATC.TABLE_NAME = %s AND
    1289. 

  1289. 						ATC.OWNER = %s
    1290. 

  1290. 					ORDER BY
    1291. 

  1291. 						ATC.TABLE_NAME ASC,
    1292. 

  1292. 						ATC.COLUMN_ID ASC";
    1293. 

  1293. 		
    1294. 

  1294. 		$result = $this->database->query($sql, $table, $schema);
    1295. 

  1295. 		
    1296. 

  1296. 		foreach ($result as $row) {
    1297. 

  1297. 			
    1298. 

  1298. 			$column = $row['column_name'];
    1299. 

  1299. 			
    1300. 

  1300. 			// Since Oracle stores check constraints in LONG columns, it is
    1301. 

  1301. 			// not possible to check or modify the constraints in SQL which
    1302. 

  1302. 			// ends up causing multiple rows with duplicate data except for
    1303. 

  1303. 			// the check constraint
    1304. 

  1304. 			$duplicate = FALSE;
    1305. 

  1305. 			
    1306. 

  1306. 			if (isset($column_info[$column])) {
    1307. 

  1307. 				$info = $column_info[$column];
    1308. 

  1308. 				$duplicate = TRUE;
    1309. 

  1309. 			} else {
    1310. 

  1310. 				$info = array();
    1311. 

  1311. 			}
    1312. 

  1312. 			
    1313. 

  1313. 			if (!$duplicate) {
    1314. 

  1314. 				// Get the column type
    1315. 

  1315. 				foreach ($data_type_mapping as $data_type => $mapped_data_type) {
    1316. 

  1316. 					if (stripos($row['data_type'], $data_type) === 0) {
    1317. 

  1317. 						$info['type'] = $mapped_data_type;
    1318. 

  1318. 						break;
    1319. 

  1319. 					}
    1320. 

  1320. 				}
    1321. 

  1321. 				
    1322. 

  1322. 				if (!isset($info['type'])) {
    1323. 

  1323. 					$info['type'] = $row['data_type'];
    1324. 

  1324. 				}
    1325. 

  1325. 				
    1326. 

  1326. 				if (in_array($info['type'], array('blob', 'text'))) {
    1327. 

  1327. 					$info['max_length'] = 4294967295;
    1328. 

  1328. 				}
    1329. 

  1329. 				
    1330. 

  1330. 				if ($row['data_type'] == 'float' && $row['precision']) {
    1331. 

  1331. 					$row['length'] = (int) $row['length'];
    1332. 

  1332. 					$before_digits = str_pad('', $row['precision'] - $row['length'], '9');
    1333. 

  1333. 					$after_digits  = str_pad('', $row['length'], '9');
    1334. 

  1334. 					$max_min       = $before_digits . ($after_digits ? '.' : '') . $after_digits;
    1335. 

  1335. 					$info['min_value'] = new fNumber('-' . $max_min);
    1336. 

  1336. 					$info['max_value'] = new fNumber($max_min);	
    1337. 

  1337. 				}
    1338. 

  1338. 				
    1339. 

  1339. 				// Handle the length of decimal/numeric fields
    1340. 

  1340. 				if ($info['type'] == 'float' && $row['length']) {
    1341. 

  1341. 					$info['decimal_places'] = (int) $row['length'];
    1342. 

  1342. 				}
    1343. 

  1343. 				
    1344. 

  1344. 				// Handle the special data for varchar fields
    1345. 

  1345. 				if (in_array($info['type'], array('char', 'varchar'))) {
    1346. 

  1346. 					$info['max_length'] = (int) $row['length'];
    1347. 

  1347. 				}
    1348. 

  1348. 			}
    1349. 

  1349. 			
    1350. 

  1350. 			// Handle check constraints that are just simple lists
    1351. 

  1351. 			if (in_array($info['type'], array('varchar', 'char')) && $row['check_constraint']) {
    1352. 

  1352. 				if (preg_match('/^\s*' . preg_quote($column, '/') . '\s+in\s+\((.*?)\)\s*$/i', $row['check_constraint'], $match)) {
    1353. 

  1353. 					if (preg_match_all("/(?<!')'((''|[^']+)*)'/", $match[1], $matches, PREG_PATTERN_ORDER)) {
    1354. 

  1354. 						$info['valid_values'] = str_replace("''", "'", $matches[1]);
    1355. 

  1355. 					}			
    1356. 

  1356. 				}
    1357. 

  1357. 			}
    1358. 

  1358. 			
    1359. 

  1359. 			if (!$duplicate) {
    1360. 

  1360. 				// Handle default values
    1361. 

  1361. 				if ($row['data_default'] !== NULL) {
    1362. 

  1362. 					if (in_array($info['type'], array('date', 'time', 'timestamp')) && $row['data_default'][0] != "'") {
    1363. 

  1363. 						$info['default'] = trim(preg_replace('#^SYS#', 'CURRENT_', $row['data_default']));
    1364. 

  1364. 						
    1365. 

  1365. 					} elseif (in_array($info['type'], array('char', 'varchar', 'text', 'date', 'time', 'timestamp'))) {
    1366. 

  1366. 						$info['default'] = str_replace("''", "'", substr(trim($row['data_default']), 1, -1));
    1367. 

  1367. 						
    1368. 

  1368. 					} elseif ($info['type'] == 'boolean') {
    1369. 

  1369. 						$info['default'] = (boolean) trim($row['data_default']);
    1370. 

  1370. 						
    1371. 

  1371. 					} elseif (in_array($info['type'], array('integer', 'float'))) {
    1372. 

  1372. 						$info['default'] = trim($row['data_default']);
    1373. 

  1373. 						
    1374. 

  1374. 					} else {
    1375. 

  1375. 						$info['default'] = $row['data_default'];
    1376. 

  1376. 					}
    1377. 

  1377. 				}
    1378. 

  1378. 			
    1379. 

  1379. 				// Not null values
    1380. 

  1380. 				$info['not_null'] = ($row['nullable'] == 'N') ? TRUE : FALSE;
    1381. 

  1381. 				
    1382. 

  1382. 				$info['comment'] = $row['comments'];
    1383. 

  1383. 			}
    1384. 

  1384. 			
    1385. 

  1385. 			$column_info[$column] = $info;
    1386. 

  1386. 		}
    1387. 

  1387. 		
    1388. 

  1388. 		$sql = "SELECT
    1389. 

  1389. 						TRIGGER_BODY
    1390. 

  1390. 					FROM
    1391. 

  1391. 						ALL_TRIGGERS
    1392. 

  1392. 					WHERE
    1393. 

  1393. 						TRIGGERING_EVENT LIKE 'INSERT%' AND
    1394. 

  1394. 						STATUS = 'ENABLED' AND
    1395. 

  1395. 						TRIGGER_NAME NOT LIKE 'BIN\$%' AND
    1396. 

  1396. 						TABLE_NAME = %s AND
    1397. 

  1397. 						OWNER = %s";
    1398. 

  1398. 						
    1399. 

  1399. 		foreach ($this->database->query($sql, $table, $schema) as $row) {
    1400. 

  1400. 			if (preg_match('#SELECT\s+(["\w.]+).nextval\s+INTO\s+:new\.(\w+)\s+FROM\s+dual#i', $row['trigger_body'], $matches)) {
    1401. 

  1401. 				$column = strtolower($matches[2]);
    1402. 

  1402. 				$column_info[$column]['auto_increment'] = TRUE;
    1403. 

  1403. 			}
    1404. 

  1404. 		}
    1405. 

  1405. 		
    1406. 

  1406. 		return $column_info;
    1407. 

  1407. 	}
    1408. 

  1408. 	
    1409. 

  1409. 	
    1410. 

  1410. 	/**
    1411. 

  1411. 	 * Fetches the key info for an Oracle database
    1412. 

  1412. 	 * 
    1413. 

  1413. 	 * @return array  The keys arrays for every table in the database - see ::getKeys() for details
    1414. 

  1414. 	 */
    1415. 

  1415. 	private function fetchOracleKeys()
    1416. 

  1416. 	{
    1417. 

  1417. 		$keys = array();
    1418. 

  1418. 		
    1419. 

  1419. 		$default_schema = strtolower($this->database->getUsername());
    1420. 

  1420. 		
    1421. 

  1421. 		$tables = $this->getTables();
    1422. 

  1422. 		foreach ($tables as $table) {
    1423. 

  1423. 			$keys[$table] = array();
    1424. 

  1424. 			$keys[$table]['primary'] = array();
    1425. 

  1425. 			$keys[$table]['unique']  = array();
    1426. 

  1426. 			$keys[$table]['foreign'] = array();
    1427. 

  1427. 		}
    1428. 

  1428. 		
    1429. 

  1429. 		$params = array();
    1430. 

  1430. 		
    1431. 

  1431. 		$sql  = "SELECT
    1432. 

  1432. 						 LOWER(AC.OWNER) \"SCHEMA\",
    1433. 

  1433. 						 LOWER(AC.TABLE_NAME) \"TABLE\",
    1434. 

  1434. 						 AC.CONSTRAINT_NAME CONSTRAINT_NAME,
    1435. 

  1435. 						 CASE AC.CONSTRAINT_TYPE
    1436. 

  1436. 							 WHEN 'P' THEN 'primary'
    1437. 

  1437. 							 WHEN 'R' THEN 'foreign'
    1438. 

  1438. 							 WHEN 'U' THEN 'unique'
    1439. 

  1439. 							 END TYPE,
    1440. 

  1440. 						 LOWER(ACC.COLUMN_NAME) \"COLUMN\",
    1441. 

  1441. 						 LOWER(FKC.OWNER) FOREIGN_SCHEMA,
    1442. 

  1442. 						 LOWER(FKC.TABLE_NAME) FOREIGN_TABLE,
    1443. 

  1443. 						 LOWER(FKC.COLUMN_NAME) FOREIGN_COLUMN,
    1444. 

  1444. 						 CASE WHEN FKC.TABLE_NAME IS NOT NULL THEN REPLACE(LOWER(AC.DELETE_RULE), ' ', '_') ELSE NULL END ON_DELETE
    1445. 

  1445. 					 FROM
    1446. 

  1446. 						 ALL_CONSTRAINTS AC INNER JOIN
    1447. 

  1447. 						 ALL_CONS_COLUMNS ACC ON AC.CONSTRAINT_NAME = ACC.CONSTRAINT_NAME AND AC.OWNER = ACC.OWNER LEFT JOIN
    1448. 

  1448. 						 ALL_CONSTRAINTS FK ON AC.R_CONSTRAINT_NAME = FK.CONSTRAINT_NAME AND AC.OWNER = FK.OWNER LEFT JOIN
    1449. 

  1449. 						 ALL_CONS_COLUMNS FKC ON FK.CONSTRAINT_NAME = FKC.CONSTRAINT_NAME AND FK.OWNER = FKC.OWNER
    1450. 

  1450. 					 WHERE
    1451. 

  1451. 						 AC.CONSTRAINT_TYPE IN ('U', 'P', 'R') AND ";
    1452. 

  1452. 		
    1453. 

  1453. 		$conditions = array();
    1454. 

  1454. 		foreach ($tables as $table) {
    1455. 

  1455. 			if (strpos($table, '.') === FALSE) {
    1456. 

  1456. 				$table = $default_schema . '.' . $table;
    1457. 

  1457. 			}	
    1458. 

  1458. 			list ($schema, $table) = explode('.', strtoupper($table));
    1459. 

  1459. 			$co…
    1460.

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