Db2
6 years ago
Mysqli
6 years ago
Oracle
6 years ago
Pdo
6 years ago
Sqlsrv
6 years ago
Abstract.php
6 years ago
Db2.php
6 years ago
Exception.php
6 years ago
Mysqli.php
6 years ago
Oracle.php
6 years ago
Sqlsrv.php
6 years ago
Oracle.php
644 lines
| 1 | <?php |
| 2 | /** |
| 3 | * Zend Framework |
| 4 | * |
| 5 | * LICENSE |
| 6 | * |
| 7 | * This source file is subject to the new BSD license that is bundled |
| 8 | * with this package in the file LICENSE.txt. |
| 9 | * It is also available through the world-wide-web at this URL: |
| 10 | * http://framework.zend.com/license/new-bsd |
| 11 | * If you did not receive a copy of the license and are unable to |
| 12 | * obtain it through the world-wide-web, please send an email |
| 13 | * to license@zend.com so we can send you a copy immediately. |
| 14 | * |
| 15 | * @category Zend |
| 16 | * @package Zend_Db |
| 17 | * @subpackage Adapter |
| 18 | * @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com) |
| 19 | * @license http://framework.zend.com/license/new-bsd New BSD License |
| 20 | * @version $Id: Oracle.php 23775 2011-03-01 17:25:24Z ralph $ |
| 21 | */ |
| 22 | |
| 23 | /** |
| 24 | * @see Zend_Db_Adapter_Abstract |
| 25 | */ |
| 26 | // require_once 'Zend/Db/Adapter/Abstract.php'; |
| 27 | |
| 28 | /** |
| 29 | * @see Zend_Db_Statement_Oracle |
| 30 | */ |
| 31 | // require_once 'Zend/Db/Statement/Oracle.php'; |
| 32 | |
| 33 | /** |
| 34 | * @category Zend |
| 35 | * @package Zend_Db |
| 36 | * @subpackage Adapter |
| 37 | * @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com) |
| 38 | * @license http://framework.zend.com/license/new-bsd New BSD License |
| 39 | */ |
| 40 | class Zend_Db_Adapter_Oracle extends Zend_Db_Adapter_Abstract |
| 41 | { |
| 42 | /** |
| 43 | * User-provided configuration. |
| 44 | * |
| 45 | * Basic keys are: |
| 46 | * |
| 47 | * username => (string) Connect to the database as this username. |
| 48 | * password => (string) Password associated with the username. |
| 49 | * dbname => Either the name of the local Oracle instance, or the |
| 50 | * name of the entry in tnsnames.ora to which you want to connect. |
| 51 | * persistent => (boolean) Set TRUE to use a persistent connection |
| 52 | * @var array |
| 53 | */ |
| 54 | protected $_config = array( |
| 55 | 'dbname' => null, |
| 56 | 'username' => null, |
| 57 | 'password' => null, |
| 58 | 'persistent' => false |
| 59 | ); |
| 60 | |
| 61 | /** |
| 62 | * Keys are UPPERCASE SQL datatypes or the constants |
| 63 | * Zend_Db::INT_TYPE, Zend_Db::BIGINT_TYPE, or Zend_Db::FLOAT_TYPE. |
| 64 | * |
| 65 | * Values are: |
| 66 | * 0 = 32-bit integer |
| 67 | * 1 = 64-bit integer |
| 68 | * 2 = float or decimal |
| 69 | * |
| 70 | * @var array Associative array of datatypes to values 0, 1, or 2. |
| 71 | */ |
| 72 | protected $_numericDataTypes = array( |
| 73 | Zend_Db::INT_TYPE => Zend_Db::INT_TYPE, |
| 74 | Zend_Db::BIGINT_TYPE => Zend_Db::BIGINT_TYPE, |
| 75 | Zend_Db::FLOAT_TYPE => Zend_Db::FLOAT_TYPE, |
| 76 | 'BINARY_DOUBLE' => Zend_Db::FLOAT_TYPE, |
| 77 | 'BINARY_FLOAT' => Zend_Db::FLOAT_TYPE, |
| 78 | 'NUMBER' => Zend_Db::FLOAT_TYPE, |
| 79 | ); |
| 80 | |
| 81 | /** |
| 82 | * @var integer |
| 83 | */ |
| 84 | protected $_execute_mode = null; |
| 85 | |
| 86 | /** |
| 87 | * Default class name for a DB statement. |
| 88 | * |
| 89 | * @var string |
| 90 | */ |
| 91 | protected $_defaultStmtClass = 'Zend_Db_Statement_Oracle'; |
| 92 | |
| 93 | /** |
| 94 | * Check if LOB field are returned as string |
| 95 | * instead of OCI-Lob object |
| 96 | * |
| 97 | * @var boolean |
| 98 | */ |
| 99 | protected $_lobAsString = null; |
| 100 | |
| 101 | /** |
| 102 | * Creates a connection resource. |
| 103 | * |
| 104 | * @return void |
| 105 | * @throws Zend_Db_Adapter_Oracle_Exception |
| 106 | */ |
| 107 | protected function _connect() |
| 108 | { |
| 109 | if (is_resource($this->_connection)) { |
| 110 | // connection already exists |
| 111 | return; |
| 112 | } |
| 113 | |
| 114 | if (!extension_loaded('oci8')) { |
| 115 | /** |
| 116 | * @see Zend_Db_Adapter_Oracle_Exception |
| 117 | */ |
| 118 | // require_once 'Zend/Db/Adapter/Oracle/Exception.php'; |
| 119 | throw new Zend_Db_Adapter_Oracle_Exception('The OCI8 extension is required for this adapter but the extension is not loaded'); |
| 120 | } |
| 121 | |
| 122 | $this->_setExecuteMode(OCI_COMMIT_ON_SUCCESS); |
| 123 | |
| 124 | $connectionFuncName = ($this->_config['persistent'] == true) ? 'oci_pconnect' : 'oci_connect'; |
| 125 | |
| 126 | $this->_connection = @$connectionFuncName( |
| 127 | $this->_config['username'], |
| 128 | $this->_config['password'], |
| 129 | $this->_config['dbname'], |
| 130 | $this->_config['charset']); |
| 131 | |
| 132 | // check the connection |
| 133 | if (!$this->_connection) { |
| 134 | /** |
| 135 | * @see Zend_Db_Adapter_Oracle_Exception |
| 136 | */ |
| 137 | // require_once 'Zend/Db/Adapter/Oracle/Exception.php'; |
| 138 | throw new Zend_Db_Adapter_Oracle_Exception(oci_error()); |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | /** |
| 143 | * Test if a connection is active |
| 144 | * |
| 145 | * @return boolean |
| 146 | */ |
| 147 | public function isConnected() |
| 148 | { |
| 149 | return ((bool) (is_resource($this->_connection) |
| 150 | && (get_resource_type($this->_connection) == 'oci8 connection' |
| 151 | || get_resource_type($this->_connection) == 'oci8 persistent connection'))); |
| 152 | } |
| 153 | |
| 154 | /** |
| 155 | * Force the connection to close. |
| 156 | * |
| 157 | * @return void |
| 158 | */ |
| 159 | public function closeConnection() |
| 160 | { |
| 161 | if ($this->isConnected()) { |
| 162 | oci_close($this->_connection); |
| 163 | } |
| 164 | $this->_connection = null; |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * Activate/deactivate return of LOB as string |
| 169 | * |
| 170 | * @param string $lob_as_string |
| 171 | * @return Zend_Db_Adapter_Oracle |
| 172 | */ |
| 173 | public function setLobAsString($lobAsString) |
| 174 | { |
| 175 | $this->_lobAsString = (bool) $lobAsString; |
| 176 | return $this; |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * Return whether or not LOB are returned as string |
| 181 | * |
| 182 | * @return boolean |
| 183 | */ |
| 184 | public function getLobAsString() |
| 185 | { |
| 186 | if ($this->_lobAsString === null) { |
| 187 | // if never set by user, we use driver option if it exists otherwise false |
| 188 | if (isset($this->_config['driver_options']) && |
| 189 | isset($this->_config['driver_options']['lob_as_string'])) { |
| 190 | $this->_lobAsString = (bool) $this->_config['driver_options']['lob_as_string']; |
| 191 | } else { |
| 192 | $this->_lobAsString = false; |
| 193 | } |
| 194 | } |
| 195 | return $this->_lobAsString; |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * Returns an SQL statement for preparation. |
| 200 | * |
| 201 | * @param string $sql The SQL statement with placeholders. |
| 202 | * @return Zend_Db_Statement_Oracle |
| 203 | */ |
| 204 | public function prepare($sql) |
| 205 | { |
| 206 | $this->_connect(); |
| 207 | $stmtClass = $this->_defaultStmtClass; |
| 208 | if (!class_exists($stmtClass)) { |
| 209 | // require_once 'Zend/Loader.php'; |
| 210 | Zend_Loader::loadClass($stmtClass); |
| 211 | } |
| 212 | $stmt = new $stmtClass($this, $sql); |
| 213 | if ($stmt instanceof Zend_Db_Statement_Oracle) { |
| 214 | $stmt->setLobAsString($this->getLobAsString()); |
| 215 | } |
| 216 | $stmt->setFetchMode($this->_fetchMode); |
| 217 | return $stmt; |
| 218 | } |
| 219 | |
| 220 | /** |
| 221 | * Quote a raw string. |
| 222 | * |
| 223 | * @param string $value Raw string |
| 224 | * @return string Quoted string |
| 225 | */ |
| 226 | protected function _quote($value) |
| 227 | { |
| 228 | if (is_int($value) || is_float($value)) { |
| 229 | return $value; |
| 230 | } |
| 231 | $value = str_replace("'", "''", $value); |
| 232 | return "'" . addcslashes($value, "\000\n\r\\\032") . "'"; |
| 233 | } |
| 234 | |
| 235 | /** |
| 236 | * Quote a table identifier and alias. |
| 237 | * |
| 238 | * @param string|array|Zend_Db_Expr $ident The identifier or expression. |
| 239 | * @param string $alias An alias for the table. |
| 240 | * @param boolean $auto If true, heed the AUTO_QUOTE_IDENTIFIERS config option. |
| 241 | * @return string The quoted identifier and alias. |
| 242 | */ |
| 243 | public function quoteTableAs($ident, $alias = null, $auto = false) |
| 244 | { |
| 245 | // Oracle doesn't allow the 'AS' keyword between the table identifier/expression and alias. |
| 246 | return $this->_quoteIdentifierAs($ident, $alias, $auto, ' '); |
| 247 | } |
| 248 | |
| 249 | /** |
| 250 | * Return the most recent value from the specified sequence in the database. |
| 251 | * This is supported only on RDBMS brands that support sequences |
| 252 | * (e.g. Oracle, PostgreSQL, DB2). Other RDBMS brands return null. |
| 253 | * |
| 254 | * @param string $sequenceName |
| 255 | * @return string |
| 256 | */ |
| 257 | public function lastSequenceId($sequenceName) |
| 258 | { |
| 259 | $this->_connect(); |
| 260 | $sql = 'SELECT '.$this->quoteIdentifier($sequenceName, true).'.CURRVAL FROM dual'; |
| 261 | $value = $this->fetchOne($sql); |
| 262 | return $value; |
| 263 | } |
| 264 | |
| 265 | /** |
| 266 | * Generate a new value from the specified sequence in the database, and return it. |
| 267 | * This is supported only on RDBMS brands that support sequences |
| 268 | * (e.g. Oracle, PostgreSQL, DB2). Other RDBMS brands return null. |
| 269 | * |
| 270 | * @param string $sequenceName |
| 271 | * @return string |
| 272 | */ |
| 273 | public function nextSequenceId($sequenceName) |
| 274 | { |
| 275 | $this->_connect(); |
| 276 | $sql = 'SELECT '.$this->quoteIdentifier($sequenceName, true).'.NEXTVAL FROM dual'; |
| 277 | $value = $this->fetchOne($sql); |
| 278 | return $value; |
| 279 | } |
| 280 | |
| 281 | /** |
| 282 | * Gets the last ID generated automatically by an IDENTITY/AUTOINCREMENT column. |
| 283 | * |
| 284 | * As a convention, on RDBMS brands that support sequences |
| 285 | * (e.g. Oracle, PostgreSQL, DB2), this method forms the name of a sequence |
| 286 | * from the arguments and returns the last id generated by that sequence. |
| 287 | * On RDBMS brands that support IDENTITY/AUTOINCREMENT columns, this method |
| 288 | * returns the last value generated for such a column, and the table name |
| 289 | * argument is disregarded. |
| 290 | * |
| 291 | * Oracle does not support IDENTITY columns, so if the sequence is not |
| 292 | * specified, this method returns null. |
| 293 | * |
| 294 | * @param string $tableName OPTIONAL Name of table. |
| 295 | * @param string $primaryKey OPTIONAL Name of primary key column. |
| 296 | * @return string |
| 297 | */ |
| 298 | public function lastInsertId($tableName = null, $primaryKey = null) |
| 299 | { |
| 300 | if ($tableName !== null) { |
| 301 | $sequenceName = $tableName; |
| 302 | if ($primaryKey) { |
| 303 | $sequenceName .= "_$primaryKey"; |
| 304 | } |
| 305 | $sequenceName .= '_seq'; |
| 306 | return $this->lastSequenceId($sequenceName); |
| 307 | } |
| 308 | |
| 309 | // No support for IDENTITY columns; return null |
| 310 | return null; |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * Returns a list of the tables in the database. |
| 315 | * |
| 316 | * @return array |
| 317 | */ |
| 318 | public function listTables() |
| 319 | { |
| 320 | $this->_connect(); |
| 321 | $data = $this->fetchCol('SELECT table_name FROM all_tables'); |
| 322 | return $data; |
| 323 | } |
| 324 | |
| 325 | /** |
| 326 | * Returns the column descriptions for a table. |
| 327 | * |
| 328 | * The return value is an associative array keyed by the column name, |
| 329 | * as returned by the RDBMS. |
| 330 | * |
| 331 | * The value of each array element is an associative array |
| 332 | * with the following keys: |
| 333 | * |
| 334 | * SCHEMA_NAME => string; name of schema |
| 335 | * TABLE_NAME => string; |
| 336 | * COLUMN_NAME => string; column name |
| 337 | * COLUMN_POSITION => number; ordinal position of column in table |
| 338 | * DATA_TYPE => string; SQL datatype name of column |
| 339 | * DEFAULT => string; default expression of column, null if none |
| 340 | * NULLABLE => boolean; true if column can have nulls |
| 341 | * LENGTH => number; length of CHAR/VARCHAR |
| 342 | * SCALE => number; scale of NUMERIC/DECIMAL |
| 343 | * PRECISION => number; precision of NUMERIC/DECIMAL |
| 344 | * UNSIGNED => boolean; unsigned property of an integer type |
| 345 | * PRIMARY => boolean; true if column is part of the primary key |
| 346 | * PRIMARY_POSITION => integer; position of column in primary key |
| 347 | * IDENTITY => integer; true if column is auto-generated with unique values |
| 348 | * |
| 349 | * @todo Discover integer unsigned property. |
| 350 | * |
| 351 | * @param string $tableName |
| 352 | * @param string $schemaName OPTIONAL |
| 353 | * @return array |
| 354 | */ |
| 355 | public function describeTable($tableName, $schemaName = null) |
| 356 | { |
| 357 | $version = $this->getServerVersion(); |
| 358 | if (($version === null) || version_compare($version, '9.0.0', '>=')) { |
| 359 | $sql = "SELECT TC.TABLE_NAME, TC.OWNER, TC.COLUMN_NAME, TC.DATA_TYPE, |
| 360 | TC.DATA_DEFAULT, TC.NULLABLE, TC.COLUMN_ID, TC.DATA_LENGTH, |
| 361 | TC.DATA_SCALE, TC.DATA_PRECISION, C.CONSTRAINT_TYPE, CC.POSITION |
| 362 | FROM ALL_TAB_COLUMNS TC |
| 363 | LEFT JOIN (ALL_CONS_COLUMNS CC JOIN ALL_CONSTRAINTS C |
| 364 | ON (CC.CONSTRAINT_NAME = C.CONSTRAINT_NAME AND CC.TABLE_NAME = C.TABLE_NAME AND CC.OWNER = C.OWNER AND C.CONSTRAINT_TYPE = 'P')) |
| 365 | ON TC.TABLE_NAME = CC.TABLE_NAME AND TC.COLUMN_NAME = CC.COLUMN_NAME |
| 366 | WHERE UPPER(TC.TABLE_NAME) = UPPER(:TBNAME)"; |
| 367 | $bind[':TBNAME'] = $tableName; |
| 368 | if ($schemaName) { |
| 369 | $sql .= ' AND UPPER(TC.OWNER) = UPPER(:SCNAME)'; |
| 370 | $bind[':SCNAME'] = $schemaName; |
| 371 | } |
| 372 | $sql .= ' ORDER BY TC.COLUMN_ID'; |
| 373 | } else { |
| 374 | $subSql="SELECT AC.OWNER, AC.TABLE_NAME, ACC.COLUMN_NAME, AC.CONSTRAINT_TYPE, ACC.POSITION |
| 375 | from ALL_CONSTRAINTS AC, ALL_CONS_COLUMNS ACC |
| 376 | WHERE ACC.CONSTRAINT_NAME = AC.CONSTRAINT_NAME |
| 377 | AND ACC.TABLE_NAME = AC.TABLE_NAME |
| 378 | AND ACC.OWNER = AC.OWNER |
| 379 | AND AC.CONSTRAINT_TYPE = 'P' |
| 380 | AND UPPER(AC.TABLE_NAME) = UPPER(:TBNAME)"; |
| 381 | $bind[':TBNAME'] = $tableName; |
| 382 | if ($schemaName) { |
| 383 | $subSql .= ' AND UPPER(ACC.OWNER) = UPPER(:SCNAME)'; |
| 384 | $bind[':SCNAME'] = $schemaName; |
| 385 | } |
| 386 | $sql="SELECT TC.TABLE_NAME, TC.OWNER, TC.COLUMN_NAME, TC.DATA_TYPE, |
| 387 | TC.DATA_DEFAULT, TC.NULLABLE, TC.COLUMN_ID, TC.DATA_LENGTH, |
| 388 | TC.DATA_SCALE, TC.DATA_PRECISION, CC.CONSTRAINT_TYPE, CC.POSITION |
| 389 | FROM ALL_TAB_COLUMNS TC, ($subSql) CC |
| 390 | WHERE UPPER(TC.TABLE_NAME) = UPPER(:TBNAME) |
| 391 | AND TC.OWNER = CC.OWNER(+) AND TC.TABLE_NAME = CC.TABLE_NAME(+) AND TC.COLUMN_NAME = CC.COLUMN_NAME(+)"; |
| 392 | if ($schemaName) { |
| 393 | $sql .= ' AND UPPER(TC.OWNER) = UPPER(:SCNAME)'; |
| 394 | } |
| 395 | $sql .= ' ORDER BY TC.COLUMN_ID'; |
| 396 | } |
| 397 | |
| 398 | $stmt = $this->query($sql, $bind); |
| 399 | |
| 400 | /** |
| 401 | * Use FETCH_NUM so we are not dependent on the CASE attribute of the PDO connection |
| 402 | */ |
| 403 | $result = $stmt->fetchAll(Zend_Db::FETCH_NUM); |
| 404 | |
| 405 | $table_name = 0; |
| 406 | $owner = 1; |
| 407 | $column_name = 2; |
| 408 | $data_type = 3; |
| 409 | $data_default = 4; |
| 410 | $nullable = 5; |
| 411 | $column_id = 6; |
| 412 | $data_length = 7; |
| 413 | $data_scale = 8; |
| 414 | $data_precision = 9; |
| 415 | $constraint_type = 10; |
| 416 | $position = 11; |
| 417 | |
| 418 | $desc = array(); |
| 419 | foreach ($result as $key => $row) { |
| 420 | list ($primary, $primaryPosition, $identity) = array(false, null, false); |
| 421 | if ($row[$constraint_type] == 'P') { |
| 422 | $primary = true; |
| 423 | $primaryPosition = $row[$position]; |
| 424 | /** |
| 425 | * Oracle does not support auto-increment keys. |
| 426 | */ |
| 427 | $identity = false; |
| 428 | } |
| 429 | $desc[$this->foldCase($row[$column_name])] = array( |
| 430 | 'SCHEMA_NAME' => $this->foldCase($row[$owner]), |
| 431 | 'TABLE_NAME' => $this->foldCase($row[$table_name]), |
| 432 | 'COLUMN_NAME' => $this->foldCase($row[$column_name]), |
| 433 | 'COLUMN_POSITION' => $row[$column_id], |
| 434 | 'DATA_TYPE' => $row[$data_type], |
| 435 | 'DEFAULT' => $row[$data_default], |
| 436 | 'NULLABLE' => (bool) ($row[$nullable] == 'Y'), |
| 437 | 'LENGTH' => $row[$data_length], |
| 438 | 'SCALE' => $row[$data_scale], |
| 439 | 'PRECISION' => $row[$data_precision], |
| 440 | 'UNSIGNED' => null, // @todo |
| 441 | 'PRIMARY' => $primary, |
| 442 | 'PRIMARY_POSITION' => $primaryPosition, |
| 443 | 'IDENTITY' => $identity |
| 444 | ); |
| 445 | } |
| 446 | return $desc; |
| 447 | } |
| 448 | |
| 449 | /** |
| 450 | * Leave autocommit mode and begin a transaction. |
| 451 | * |
| 452 | * @return void |
| 453 | */ |
| 454 | protected function _beginTransaction() |
| 455 | { |
| 456 | $this->_setExecuteMode(OCI_DEFAULT); |
| 457 | } |
| 458 | |
| 459 | /** |
| 460 | * Commit a transaction and return to autocommit mode. |
| 461 | * |
| 462 | * @return void |
| 463 | * @throws Zend_Db_Adapter_Oracle_Exception |
| 464 | */ |
| 465 | protected function _commit() |
| 466 | { |
| 467 | if (!oci_commit($this->_connection)) { |
| 468 | /** |
| 469 | * @see Zend_Db_Adapter_Oracle_Exception |
| 470 | */ |
| 471 | // require_once 'Zend/Db/Adapter/Oracle/Exception.php'; |
| 472 | throw new Zend_Db_Adapter_Oracle_Exception(oci_error($this->_connection)); |
| 473 | } |
| 474 | $this->_setExecuteMode(OCI_COMMIT_ON_SUCCESS); |
| 475 | } |
| 476 | |
| 477 | /** |
| 478 | * Roll back a transaction and return to autocommit mode. |
| 479 | * |
| 480 | * @return void |
| 481 | * @throws Zend_Db_Adapter_Oracle_Exception |
| 482 | */ |
| 483 | protected function _rollBack() |
| 484 | { |
| 485 | if (!oci_rollback($this->_connection)) { |
| 486 | /** |
| 487 | * @see Zend_Db_Adapter_Oracle_Exception |
| 488 | */ |
| 489 | // require_once 'Zend/Db/Adapter/Oracle/Exception.php'; |
| 490 | throw new Zend_Db_Adapter_Oracle_Exception(oci_error($this->_connection)); |
| 491 | } |
| 492 | $this->_setExecuteMode(OCI_COMMIT_ON_SUCCESS); |
| 493 | } |
| 494 | |
| 495 | /** |
| 496 | * Set the fetch mode. |
| 497 | * |
| 498 | * @todo Support FETCH_CLASS and FETCH_INTO. |
| 499 | * |
| 500 | * @param integer $mode A fetch mode. |
| 501 | * @return void |
| 502 | * @throws Zend_Db_Adapter_Oracle_Exception |
| 503 | */ |
| 504 | public function setFetchMode($mode) |
| 505 | { |
| 506 | switch ($mode) { |
| 507 | case Zend_Db::FETCH_NUM: // seq array |
| 508 | case Zend_Db::FETCH_ASSOC: // assoc array |
| 509 | case Zend_Db::FETCH_BOTH: // seq+assoc array |
| 510 | case Zend_Db::FETCH_OBJ: // object |
| 511 | $this->_fetchMode = $mode; |
| 512 | break; |
| 513 | case Zend_Db::FETCH_BOUND: // bound to PHP variable |
| 514 | /** |
| 515 | * @see Zend_Db_Adapter_Oracle_Exception |
| 516 | */ |
| 517 | // require_once 'Zend/Db/Adapter/Oracle/Exception.php'; |
| 518 | throw new Zend_Db_Adapter_Oracle_Exception('FETCH_BOUND is not supported yet'); |
| 519 | break; |
| 520 | default: |
| 521 | /** |
| 522 | * @see Zend_Db_Adapter_Oracle_Exception |
| 523 | */ |
| 524 | // require_once 'Zend/Db/Adapter/Oracle/Exception.php'; |
| 525 | throw new Zend_Db_Adapter_Oracle_Exception("Invalid fetch mode '$mode' specified"); |
| 526 | break; |
| 527 | } |
| 528 | } |
| 529 | |
| 530 | /** |
| 531 | * Adds an adapter-specific LIMIT clause to the SELECT statement. |
| 532 | * |
| 533 | * @param string $sql |
| 534 | * @param integer $count |
| 535 | * @param integer $offset OPTIONAL |
| 536 | * @return string |
| 537 | * @throws Zend_Db_Adapter_Oracle_Exception |
| 538 | */ |
| 539 | public function limit($sql, $count, $offset = 0) |
| 540 | { |
| 541 | $count = intval($count); |
| 542 | if ($count <= 0) { |
| 543 | /** |
| 544 | * @see Zend_Db_Adapter_Oracle_Exception |
| 545 | */ |
| 546 | // require_once 'Zend/Db/Adapter/Oracle/Exception.php'; |
| 547 | throw new Zend_Db_Adapter_Oracle_Exception("LIMIT argument count=$count is not valid"); |
| 548 | } |
| 549 | |
| 550 | $offset = intval($offset); |
| 551 | if ($offset < 0) { |
| 552 | /** |
| 553 | * @see Zend_Db_Adapter_Oracle_Exception |
| 554 | */ |
| 555 | // require_once 'Zend/Db/Adapter/Oracle/Exception.php'; |
| 556 | throw new Zend_Db_Adapter_Oracle_Exception("LIMIT argument offset=$offset is not valid"); |
| 557 | } |
| 558 | |
| 559 | /** |
| 560 | * Oracle does not implement the LIMIT clause as some RDBMS do. |
| 561 | * We have to simulate it with subqueries and ROWNUM. |
| 562 | * Unfortunately because we use the column wildcard "*", |
| 563 | * this puts an extra column into the query result set. |
| 564 | */ |
| 565 | $limit_sql = "SELECT z2.* |
| 566 | FROM ( |
| 567 | SELECT z1.*, ROWNUM AS \"zend_db_rownum\" |
| 568 | FROM ( |
| 569 | " . $sql . " |
| 570 | ) z1 |
| 571 | ) z2 |
| 572 | WHERE z2.\"zend_db_rownum\" BETWEEN " . ($offset+1) . " AND " . ($offset+$count); |
| 573 | return $limit_sql; |
| 574 | } |
| 575 | |
| 576 | /** |
| 577 | * @param integer $mode |
| 578 | * @throws Zend_Db_Adapter_Oracle_Exception |
| 579 | */ |
| 580 | private function _setExecuteMode($mode) |
| 581 | { |
| 582 | switch($mode) { |
| 583 | case OCI_COMMIT_ON_SUCCESS: |
| 584 | case OCI_DEFAULT: |
| 585 | case OCI_DESCRIBE_ONLY: |
| 586 | $this->_execute_mode = $mode; |
| 587 | break; |
| 588 | default: |
| 589 | /** |
| 590 | * @see Zend_Db_Adapter_Oracle_Exception |
| 591 | */ |
| 592 | // require_once 'Zend/Db/Adapter/Oracle/Exception.php'; |
| 593 | throw new Zend_Db_Adapter_Oracle_Exception("Invalid execution mode '$mode' specified"); |
| 594 | break; |
| 595 | } |
| 596 | } |
| 597 | |
| 598 | /** |
| 599 | * @return int |
| 600 | */ |
| 601 | public function _getExecuteMode() |
| 602 | { |
| 603 | return $this->_execute_mode; |
| 604 | } |
| 605 | |
| 606 | /** |
| 607 | * Check if the adapter supports real SQL parameters. |
| 608 | * |
| 609 | * @param string $type 'positional' or 'named' |
| 610 | * @return bool |
| 611 | */ |
| 612 | public function supportsParameters($type) |
| 613 | { |
| 614 | switch ($type) { |
| 615 | case 'named': |
| 616 | return true; |
| 617 | case 'positional': |
| 618 | default: |
| 619 | return false; |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | /** |
| 624 | * Retrieve server version in PHP style |
| 625 | * |
| 626 | * @return string |
| 627 | */ |
| 628 | public function getServerVersion() |
| 629 | { |
| 630 | $this->_connect(); |
| 631 | $version = oci_server_version($this->_connection); |
| 632 | if ($version !== false) { |
| 633 | $matches = null; |
| 634 | if (preg_match('/((?:[0-9]{1,2}\.){1,3}[0-9]{1,2})/', $version, $matches)) { |
| 635 | return $matches[1]; |
| 636 | } else { |
| 637 | return null; |
| 638 | } |
| 639 | } else { |
| 640 | return null; |
| 641 | } |
| 642 | } |
| 643 | } |
| 644 |