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
Db2.php
841 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: Db2.php 23775 2011-03-01 17:25:24Z ralph $ |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | /** |
| 25 | * @see Zend_Db |
| 26 | */ |
| 27 | // require_once 'Zend/Db.php'; |
| 28 | |
| 29 | /** |
| 30 | * @see Zend_Db_Adapter_Abstract |
| 31 | */ |
| 32 | // require_once 'Zend/Db/Adapter/Abstract.php'; |
| 33 | |
| 34 | /** |
| 35 | * @see Zend_Db_Statement_Db2 |
| 36 | */ |
| 37 | // require_once 'Zend/Db/Statement/Db2.php'; |
| 38 | |
| 39 | |
| 40 | /** |
| 41 | * @package Zend_Db |
| 42 | * @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com) |
| 43 | * @license http://framework.zend.com/license/new-bsd New BSD License |
| 44 | */ |
| 45 | |
| 46 | class Zend_Db_Adapter_Db2 extends Zend_Db_Adapter_Abstract |
| 47 | { |
| 48 | /** |
| 49 | * User-provided configuration. |
| 50 | * |
| 51 | * Basic keys are: |
| 52 | * |
| 53 | * username => (string) Connect to the database as this username. |
| 54 | * password => (string) Password associated with the username. |
| 55 | * host => (string) What host to connect to (default 127.0.0.1) |
| 56 | * dbname => (string) The name of the database to user |
| 57 | * protocol => (string) Protocol to use, defaults to "TCPIP" |
| 58 | * port => (integer) Port number to use for TCP/IP if protocol is "TCPIP" |
| 59 | * persistent => (boolean) Set TRUE to use a persistent connection (db2_pconnect) |
| 60 | * os => (string) This should be set to 'i5' if the db is on an os400/i5 |
| 61 | * schema => (string) The default schema the connection should use |
| 62 | * |
| 63 | * @var array |
| 64 | */ |
| 65 | protected $_config = array( |
| 66 | 'dbname' => null, |
| 67 | 'username' => null, |
| 68 | 'password' => null, |
| 69 | 'host' => 'localhost', |
| 70 | 'port' => '50000', |
| 71 | 'protocol' => 'TCPIP', |
| 72 | 'persistent' => false, |
| 73 | 'os' => null, |
| 74 | 'schema' => null |
| 75 | ); |
| 76 | |
| 77 | /** |
| 78 | * Execution mode |
| 79 | * |
| 80 | * @var int execution flag (DB2_AUTOCOMMIT_ON or DB2_AUTOCOMMIT_OFF) |
| 81 | */ |
| 82 | protected $_execute_mode = DB2_AUTOCOMMIT_ON; |
| 83 | |
| 84 | /** |
| 85 | * Default class name for a DB statement. |
| 86 | * |
| 87 | * @var string |
| 88 | */ |
| 89 | protected $_defaultStmtClass = 'Zend_Db_Statement_Db2'; |
| 90 | protected $_isI5 = false; |
| 91 | |
| 92 | /** |
| 93 | * Keys are UPPERCASE SQL datatypes or the constants |
| 94 | * Zend_Db::INT_TYPE, Zend_Db::BIGINT_TYPE, or Zend_Db::FLOAT_TYPE. |
| 95 | * |
| 96 | * Values are: |
| 97 | * 0 = 32-bit integer |
| 98 | * 1 = 64-bit integer |
| 99 | * 2 = float or decimal |
| 100 | * |
| 101 | * @var array Associative array of datatypes to values 0, 1, or 2. |
| 102 | */ |
| 103 | protected $_numericDataTypes = array( |
| 104 | Zend_Db::INT_TYPE => Zend_Db::INT_TYPE, |
| 105 | Zend_Db::BIGINT_TYPE => Zend_Db::BIGINT_TYPE, |
| 106 | Zend_Db::FLOAT_TYPE => Zend_Db::FLOAT_TYPE, |
| 107 | 'INTEGER' => Zend_Db::INT_TYPE, |
| 108 | 'SMALLINT' => Zend_Db::INT_TYPE, |
| 109 | 'BIGINT' => Zend_Db::BIGINT_TYPE, |
| 110 | 'DECIMAL' => Zend_Db::FLOAT_TYPE, |
| 111 | 'NUMERIC' => Zend_Db::FLOAT_TYPE |
| 112 | ); |
| 113 | |
| 114 | /** |
| 115 | * Creates a connection resource. |
| 116 | * |
| 117 | * @return void |
| 118 | */ |
| 119 | protected function _connect() |
| 120 | { |
| 121 | if (is_resource($this->_connection)) { |
| 122 | // connection already exists |
| 123 | return; |
| 124 | } |
| 125 | |
| 126 | if (!extension_loaded('ibm_db2')) { |
| 127 | /** |
| 128 | * @see Zend_Db_Adapter_Db2_Exception |
| 129 | */ |
| 130 | // require_once 'Zend/Db/Adapter/Db2/Exception.php'; |
| 131 | throw new Zend_Db_Adapter_Db2_Exception('The IBM DB2 extension is required for this adapter but the extension is not loaded'); |
| 132 | } |
| 133 | |
| 134 | $this->_determineI5(); |
| 135 | if ($this->_config['persistent']) { |
| 136 | // use persistent connection |
| 137 | $conn_func_name = 'db2_pconnect'; |
| 138 | } else { |
| 139 | // use "normal" connection |
| 140 | $conn_func_name = 'db2_connect'; |
| 141 | } |
| 142 | |
| 143 | if (!isset($this->_config['driver_options']['autocommit'])) { |
| 144 | // set execution mode |
| 145 | $this->_config['driver_options']['autocommit'] = &$this->_execute_mode; |
| 146 | } |
| 147 | |
| 148 | if (isset($this->_config['options'][Zend_Db::CASE_FOLDING])) { |
| 149 | $caseAttrMap = array( |
| 150 | Zend_Db::CASE_NATURAL => DB2_CASE_NATURAL, |
| 151 | Zend_Db::CASE_UPPER => DB2_CASE_UPPER, |
| 152 | Zend_Db::CASE_LOWER => DB2_CASE_LOWER |
| 153 | ); |
| 154 | $this->_config['driver_options']['DB2_ATTR_CASE'] = $caseAttrMap[$this->_config['options'][Zend_Db::CASE_FOLDING]]; |
| 155 | } |
| 156 | |
| 157 | if ($this->_isI5 && isset($this->_config['driver_options']['i5_naming'])) { |
| 158 | if ($this->_config['driver_options']['i5_naming']) { |
| 159 | $this->_config['driver_options']['i5_naming'] = DB2_I5_NAMING_ON; |
| 160 | } else { |
| 161 | $this->_config['driver_options']['i5_naming'] = DB2_I5_NAMING_OFF; |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | if ($this->_config['host'] !== 'localhost' && !$this->_isI5) { |
| 166 | // if the host isn't localhost, use extended connection params |
| 167 | $dbname = 'DRIVER={IBM DB2 ODBC DRIVER}' . |
| 168 | ';DATABASE=' . $this->_config['dbname'] . |
| 169 | ';HOSTNAME=' . $this->_config['host'] . |
| 170 | ';PORT=' . $this->_config['port'] . |
| 171 | ';PROTOCOL=' . $this->_config['protocol'] . |
| 172 | ';UID=' . $this->_config['username'] . |
| 173 | ';PWD=' . $this->_config['password'] .';'; |
| 174 | $this->_connection = $conn_func_name( |
| 175 | $dbname, |
| 176 | null, |
| 177 | null, |
| 178 | $this->_config['driver_options'] |
| 179 | ); |
| 180 | } else { |
| 181 | // host is localhost, so use standard connection params |
| 182 | $this->_connection = $conn_func_name( |
| 183 | $this->_config['dbname'], |
| 184 | $this->_config['username'], |
| 185 | $this->_config['password'], |
| 186 | $this->_config['driver_options'] |
| 187 | ); |
| 188 | } |
| 189 | |
| 190 | // check the connection |
| 191 | if (!$this->_connection) { |
| 192 | /** |
| 193 | * @see Zend_Db_Adapter_Db2_Exception |
| 194 | */ |
| 195 | // require_once 'Zend/Db/Adapter/Db2/Exception.php'; |
| 196 | throw new Zend_Db_Adapter_Db2_Exception(db2_conn_errormsg(), db2_conn_error()); |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | /** |
| 201 | * Test if a connection is active |
| 202 | * |
| 203 | * @return boolean |
| 204 | */ |
| 205 | public function isConnected() |
| 206 | { |
| 207 | return ((bool) (is_resource($this->_connection) |
| 208 | && get_resource_type($this->_connection) == 'DB2 Connection')); |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | * Force the connection to close. |
| 213 | * |
| 214 | * @return void |
| 215 | */ |
| 216 | public function closeConnection() |
| 217 | { |
| 218 | if ($this->isConnected()) { |
| 219 | db2_close($this->_connection); |
| 220 | } |
| 221 | $this->_connection = null; |
| 222 | } |
| 223 | |
| 224 | /** |
| 225 | * Returns an SQL statement for preparation. |
| 226 | * |
| 227 | * @param string $sql The SQL statement with placeholders. |
| 228 | * @return Zend_Db_Statement_Db2 |
| 229 | */ |
| 230 | public function prepare($sql) |
| 231 | { |
| 232 | $this->_connect(); |
| 233 | $stmtClass = $this->_defaultStmtClass; |
| 234 | if (!class_exists($stmtClass)) { |
| 235 | // require_once 'Zend/Loader.php'; |
| 236 | Zend_Loader::loadClass($stmtClass); |
| 237 | } |
| 238 | $stmt = new $stmtClass($this, $sql); |
| 239 | $stmt->setFetchMode($this->_fetchMode); |
| 240 | return $stmt; |
| 241 | } |
| 242 | |
| 243 | /** |
| 244 | * Gets the execution mode |
| 245 | * |
| 246 | * @return int the execution mode (DB2_AUTOCOMMIT_ON or DB2_AUTOCOMMIT_OFF) |
| 247 | */ |
| 248 | public function _getExecuteMode() |
| 249 | { |
| 250 | return $this->_execute_mode; |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * @param integer $mode |
| 255 | * @return void |
| 256 | */ |
| 257 | public function _setExecuteMode($mode) |
| 258 | { |
| 259 | switch ($mode) { |
| 260 | case DB2_AUTOCOMMIT_OFF: |
| 261 | case DB2_AUTOCOMMIT_ON: |
| 262 | $this->_execute_mode = $mode; |
| 263 | db2_autocommit($this->_connection, $mode); |
| 264 | break; |
| 265 | default: |
| 266 | /** |
| 267 | * @see Zend_Db_Adapter_Db2_Exception |
| 268 | */ |
| 269 | // require_once 'Zend/Db/Adapter/Db2/Exception.php'; |
| 270 | throw new Zend_Db_Adapter_Db2_Exception("execution mode not supported"); |
| 271 | break; |
| 272 | } |
| 273 | } |
| 274 | |
| 275 | /** |
| 276 | * Quote a raw string. |
| 277 | * |
| 278 | * @param string $value Raw string |
| 279 | * @return string Quoted string |
| 280 | */ |
| 281 | protected function _quote($value) |
| 282 | { |
| 283 | if (is_int($value) || is_float($value)) { |
| 284 | return $value; |
| 285 | } |
| 286 | /** |
| 287 | * Use db2_escape_string() if it is present in the IBM DB2 extension. |
| 288 | * But some supported versions of PHP do not include this function, |
| 289 | * so fall back to default quoting in the parent class. |
| 290 | */ |
| 291 | if (function_exists('db2_escape_string')) { |
| 292 | return "'" . db2_escape_string($value) . "'"; |
| 293 | } |
| 294 | return parent::_quote($value); |
| 295 | } |
| 296 | |
| 297 | /** |
| 298 | * @return string |
| 299 | */ |
| 300 | public function getQuoteIdentifierSymbol() |
| 301 | { |
| 302 | $this->_connect(); |
| 303 | $info = db2_server_info($this->_connection); |
| 304 | if ($info) { |
| 305 | $identQuote = $info->IDENTIFIER_QUOTE_CHAR; |
| 306 | } else { |
| 307 | // db2_server_info() does not return result on some i5 OS version |
| 308 | if ($this->_isI5) { |
| 309 | $identQuote ="'"; |
| 310 | } |
| 311 | } |
| 312 | return $identQuote; |
| 313 | } |
| 314 | |
| 315 | /** |
| 316 | * Returns a list of the tables in the database. |
| 317 | * @param string $schema OPTIONAL |
| 318 | * @return array |
| 319 | */ |
| 320 | public function listTables($schema = null) |
| 321 | { |
| 322 | $this->_connect(); |
| 323 | |
| 324 | if ($schema === null && $this->_config['schema'] != null) { |
| 325 | $schema = $this->_config['schema']; |
| 326 | } |
| 327 | |
| 328 | $tables = array(); |
| 329 | |
| 330 | if (!$this->_isI5) { |
| 331 | if ($schema) { |
| 332 | $stmt = db2_tables($this->_connection, null, $schema); |
| 333 | } else { |
| 334 | $stmt = db2_tables($this->_connection); |
| 335 | } |
| 336 | while ($row = db2_fetch_assoc($stmt)) { |
| 337 | $tables[] = $row['TABLE_NAME']; |
| 338 | } |
| 339 | } else { |
| 340 | $tables = $this->_i5listTables($schema); |
| 341 | } |
| 342 | |
| 343 | return $tables; |
| 344 | } |
| 345 | |
| 346 | |
| 347 | /** |
| 348 | * Returns the column descriptions for a table. |
| 349 | * |
| 350 | * The return value is an associative array keyed by the column name, |
| 351 | * as returned by the RDBMS. |
| 352 | * |
| 353 | * The value of each array element is an associative array |
| 354 | * with the following keys: |
| 355 | * |
| 356 | * SCHEMA_NAME => string; name of database or schema |
| 357 | * TABLE_NAME => string; |
| 358 | * COLUMN_NAME => string; column name |
| 359 | * COLUMN_POSITION => number; ordinal position of column in table |
| 360 | * DATA_TYPE => string; SQL datatype name of column |
| 361 | * DEFAULT => string; default expression of column, null if none |
| 362 | * NULLABLE => boolean; true if column can have nulls |
| 363 | * LENGTH => number; length of CHAR/VARCHAR |
| 364 | * SCALE => number; scale of NUMERIC/DECIMAL |
| 365 | * PRECISION => number; precision of NUMERIC/DECIMAL |
| 366 | * UNSIGNED => boolean; unsigned property of an integer type |
| 367 | * DB2 not supports UNSIGNED integer. |
| 368 | * PRIMARY => boolean; true if column is part of the primary key |
| 369 | * PRIMARY_POSITION => integer; position of column in primary key |
| 370 | * IDENTITY => integer; true if column is auto-generated with unique values |
| 371 | * |
| 372 | * @param string $tableName |
| 373 | * @param string $schemaName OPTIONAL |
| 374 | * @return array |
| 375 | */ |
| 376 | public function describeTable($tableName, $schemaName = null) |
| 377 | { |
| 378 | // Ensure the connection is made so that _isI5 is set |
| 379 | $this->_connect(); |
| 380 | |
| 381 | if ($schemaName === null && $this->_config['schema'] != null) { |
| 382 | $schemaName = $this->_config['schema']; |
| 383 | } |
| 384 | |
| 385 | if (!$this->_isI5) { |
| 386 | |
| 387 | $sql = "SELECT DISTINCT c.tabschema, c.tabname, c.colname, c.colno, |
| 388 | c.typename, c.default, c.nulls, c.length, c.scale, |
| 389 | c.identity, tc.type AS tabconsttype, k.colseq |
| 390 | FROM syscat.columns c |
| 391 | LEFT JOIN (syscat.keycoluse k JOIN syscat.tabconst tc |
| 392 | ON (k.tabschema = tc.tabschema |
| 393 | AND k.tabname = tc.tabname |
| 394 | AND tc.type = 'P')) |
| 395 | ON (c.tabschema = k.tabschema |
| 396 | AND c.tabname = k.tabname |
| 397 | AND c.colname = k.colname) |
| 398 | WHERE " |
| 399 | . $this->quoteInto('UPPER(c.tabname) = UPPER(?)', $tableName); |
| 400 | |
| 401 | if ($schemaName) { |
| 402 | $sql .= $this->quoteInto(' AND UPPER(c.tabschema) = UPPER(?)', $schemaName); |
| 403 | } |
| 404 | |
| 405 | $sql .= " ORDER BY c.colno"; |
| 406 | |
| 407 | } else { |
| 408 | |
| 409 | // DB2 On I5 specific query |
| 410 | $sql = "SELECT DISTINCT C.TABLE_SCHEMA, C.TABLE_NAME, C.COLUMN_NAME, C.ORDINAL_POSITION, |
| 411 | C.DATA_TYPE, C.COLUMN_DEFAULT, C.NULLS ,C.LENGTH, C.SCALE, LEFT(C.IDENTITY,1), |
| 412 | LEFT(tc.TYPE, 1) AS tabconsttype, k.COLSEQ |
| 413 | FROM QSYS2.SYSCOLUMNS C |
| 414 | LEFT JOIN (QSYS2.syskeycst k JOIN QSYS2.SYSCST tc |
| 415 | ON (k.TABLE_SCHEMA = tc.TABLE_SCHEMA |
| 416 | AND k.TABLE_NAME = tc.TABLE_NAME |
| 417 | AND LEFT(tc.type,1) = 'P')) |
| 418 | ON (C.TABLE_SCHEMA = k.TABLE_SCHEMA |
| 419 | AND C.TABLE_NAME = k.TABLE_NAME |
| 420 | AND C.COLUMN_NAME = k.COLUMN_NAME) |
| 421 | WHERE " |
| 422 | . $this->quoteInto('UPPER(C.TABLE_NAME) = UPPER(?)', $tableName); |
| 423 | |
| 424 | if ($schemaName) { |
| 425 | $sql .= $this->quoteInto(' AND UPPER(C.TABLE_SCHEMA) = UPPER(?)', $schemaName); |
| 426 | } |
| 427 | |
| 428 | $sql .= " ORDER BY C.ORDINAL_POSITION FOR FETCH ONLY"; |
| 429 | } |
| 430 | |
| 431 | $desc = array(); |
| 432 | $stmt = $this->query($sql); |
| 433 | |
| 434 | /** |
| 435 | * To avoid case issues, fetch using FETCH_NUM |
| 436 | */ |
| 437 | $result = $stmt->fetchAll(Zend_Db::FETCH_NUM); |
| 438 | |
| 439 | /** |
| 440 | * The ordering of columns is defined by the query so we can map |
| 441 | * to variables to improve readability |
| 442 | */ |
| 443 | $tabschema = 0; |
| 444 | $tabname = 1; |
| 445 | $colname = 2; |
| 446 | $colno = 3; |
| 447 | $typename = 4; |
| 448 | $default = 5; |
| 449 | $nulls = 6; |
| 450 | $length = 7; |
| 451 | $scale = 8; |
| 452 | $identityCol = 9; |
| 453 | $tabconstType = 10; |
| 454 | $colseq = 11; |
| 455 | |
| 456 | foreach ($result as $key => $row) { |
| 457 | list ($primary, $primaryPosition, $identity) = array(false, null, false); |
| 458 | if ($row[$tabconstType] == 'P') { |
| 459 | $primary = true; |
| 460 | $primaryPosition = $row[$colseq]; |
| 461 | } |
| 462 | /** |
| 463 | * In IBM DB2, an column can be IDENTITY |
| 464 | * even if it is not part of the PRIMARY KEY. |
| 465 | */ |
| 466 | if ($row[$identityCol] == 'Y') { |
| 467 | $identity = true; |
| 468 | } |
| 469 | |
| 470 | // only colname needs to be case adjusted |
| 471 | $desc[$this->foldCase($row[$colname])] = array( |
| 472 | 'SCHEMA_NAME' => $this->foldCase($row[$tabschema]), |
| 473 | 'TABLE_NAME' => $this->foldCase($row[$tabname]), |
| 474 | 'COLUMN_NAME' => $this->foldCase($row[$colname]), |
| 475 | 'COLUMN_POSITION' => (!$this->_isI5) ? $row[$colno]+1 : $row[$colno], |
| 476 | 'DATA_TYPE' => $row[$typename], |
| 477 | 'DEFAULT' => $row[$default], |
| 478 | 'NULLABLE' => (bool) ($row[$nulls] == 'Y'), |
| 479 | 'LENGTH' => $row[$length], |
| 480 | 'SCALE' => $row[$scale], |
| 481 | 'PRECISION' => ($row[$typename] == 'DECIMAL' ? $row[$length] : 0), |
| 482 | 'UNSIGNED' => false, |
| 483 | 'PRIMARY' => $primary, |
| 484 | 'PRIMARY_POSITION' => $primaryPosition, |
| 485 | 'IDENTITY' => $identity |
| 486 | ); |
| 487 | } |
| 488 | |
| 489 | return $desc; |
| 490 | } |
| 491 | |
| 492 | /** |
| 493 | * Return the most recent value from the specified sequence in the database. |
| 494 | * This is supported only on RDBMS brands that support sequences |
| 495 | * (e.g. Oracle, PostgreSQL, DB2). Other RDBMS brands return null. |
| 496 | * |
| 497 | * @param string $sequenceName |
| 498 | * @return string |
| 499 | */ |
| 500 | public function lastSequenceId($sequenceName) |
| 501 | { |
| 502 | $this->_connect(); |
| 503 | |
| 504 | if (!$this->_isI5) { |
| 505 | $quotedSequenceName = $this->quoteIdentifier($sequenceName, true); |
| 506 | $sql = 'SELECT PREVVAL FOR ' . $quotedSequenceName . ' AS VAL FROM SYSIBM.SYSDUMMY1'; |
| 507 | } else { |
| 508 | $quotedSequenceName = $sequenceName; |
| 509 | $sql = 'SELECT PREVVAL FOR ' . $this->quoteIdentifier($sequenceName, true) . ' AS VAL FROM QSYS2.QSQPTABL'; |
| 510 | } |
| 511 | |
| 512 | $value = $this->fetchOne($sql); |
| 513 | return (string) $value; |
| 514 | } |
| 515 | |
| 516 | /** |
| 517 | * Generate a new value from the specified sequence in the database, and return it. |
| 518 | * This is supported only on RDBMS brands that support sequences |
| 519 | * (e.g. Oracle, PostgreSQL, DB2). Other RDBMS brands return null. |
| 520 | * |
| 521 | * @param string $sequenceName |
| 522 | * @return string |
| 523 | */ |
| 524 | public function nextSequenceId($sequenceName) |
| 525 | { |
| 526 | $this->_connect(); |
| 527 | $sql = 'SELECT NEXTVAL FOR '.$this->quoteIdentifier($sequenceName, true).' AS VAL FROM SYSIBM.SYSDUMMY1'; |
| 528 | $value = $this->fetchOne($sql); |
| 529 | return (string) $value; |
| 530 | } |
| 531 | |
| 532 | /** |
| 533 | * Gets the last ID generated automatically by an IDENTITY/AUTOINCREMENT column. |
| 534 | * |
| 535 | * As a convention, on RDBMS brands that support sequences |
| 536 | * (e.g. Oracle, PostgreSQL, DB2), this method forms the name of a sequence |
| 537 | * from the arguments and returns the last id generated by that sequence. |
| 538 | * On RDBMS brands that support IDENTITY/AUTOINCREMENT columns, this method |
| 539 | * returns the last value generated for such a column, and the table name |
| 540 | * argument is disregarded. |
| 541 | * |
| 542 | * The IDENTITY_VAL_LOCAL() function gives the last generated identity value |
| 543 | * in the current process, even if it was for a GENERATED column. |
| 544 | * |
| 545 | * @param string $tableName OPTIONAL |
| 546 | * @param string $primaryKey OPTIONAL |
| 547 | * @param string $idType OPTIONAL used for i5 platform to define sequence/idenity unique value |
| 548 | * @return string |
| 549 | */ |
| 550 | |
| 551 | public function lastInsertId($tableName = null, $primaryKey = null, $idType = null) |
| 552 | { |
| 553 | $this->_connect(); |
| 554 | |
| 555 | if ($this->_isI5) { |
| 556 | return (string) $this->_i5LastInsertId($tableName, $idType); |
| 557 | } |
| 558 | |
| 559 | if ($tableName !== null) { |
| 560 | $sequenceName = $tableName; |
| 561 | if ($primaryKey) { |
| 562 | $sequenceName .= "_$primaryKey"; |
| 563 | } |
| 564 | $sequenceName .= '_seq'; |
| 565 | return $this->lastSequenceId($sequenceName); |
| 566 | } |
| 567 | |
| 568 | $sql = 'SELECT IDENTITY_VAL_LOCAL() AS VAL FROM SYSIBM.SYSDUMMY1'; |
| 569 | $value = $this->fetchOne($sql); |
| 570 | return (string) $value; |
| 571 | } |
| 572 | |
| 573 | /** |
| 574 | * Begin a transaction. |
| 575 | * |
| 576 | * @return void |
| 577 | */ |
| 578 | protected function _beginTransaction() |
| 579 | { |
| 580 | $this->_setExecuteMode(DB2_AUTOCOMMIT_OFF); |
| 581 | } |
| 582 | |
| 583 | /** |
| 584 | * Commit a transaction. |
| 585 | * |
| 586 | * @return void |
| 587 | */ |
| 588 | protected function _commit() |
| 589 | { |
| 590 | if (!db2_commit($this->_connection)) { |
| 591 | /** |
| 592 | * @see Zend_Db_Adapter_Db2_Exception |
| 593 | */ |
| 594 | // require_once 'Zend/Db/Adapter/Db2/Exception.php'; |
| 595 | throw new Zend_Db_Adapter_Db2_Exception( |
| 596 | db2_conn_errormsg($this->_connection), |
| 597 | db2_conn_error($this->_connection)); |
| 598 | } |
| 599 | |
| 600 | $this->_setExecuteMode(DB2_AUTOCOMMIT_ON); |
| 601 | } |
| 602 | |
| 603 | /** |
| 604 | * Rollback a transaction. |
| 605 | * |
| 606 | * @return void |
| 607 | */ |
| 608 | protected function _rollBack() |
| 609 | { |
| 610 | if (!db2_rollback($this->_connection)) { |
| 611 | /** |
| 612 | * @see Zend_Db_Adapter_Db2_Exception |
| 613 | */ |
| 614 | // require_once 'Zend/Db/Adapter/Db2/Exception.php'; |
| 615 | throw new Zend_Db_Adapter_Db2_Exception( |
| 616 | db2_conn_errormsg($this->_connection), |
| 617 | db2_conn_error($this->_connection)); |
| 618 | } |
| 619 | $this->_setExecuteMode(DB2_AUTOCOMMIT_ON); |
| 620 | } |
| 621 | |
| 622 | /** |
| 623 | * Set the fetch mode. |
| 624 | * |
| 625 | * @param integer $mode |
| 626 | * @return void |
| 627 | * @throws Zend_Db_Adapter_Db2_Exception |
| 628 | */ |
| 629 | public function setFetchMode($mode) |
| 630 | { |
| 631 | switch ($mode) { |
| 632 | case Zend_Db::FETCH_NUM: // seq array |
| 633 | case Zend_Db::FETCH_ASSOC: // assoc array |
| 634 | case Zend_Db::FETCH_BOTH: // seq+assoc array |
| 635 | case Zend_Db::FETCH_OBJ: // object |
| 636 | $this->_fetchMode = $mode; |
| 637 | break; |
| 638 | case Zend_Db::FETCH_BOUND: // bound to PHP variable |
| 639 | /** |
| 640 | * @see Zend_Db_Adapter_Db2_Exception |
| 641 | */ |
| 642 | // require_once 'Zend/Db/Adapter/Db2/Exception.php'; |
| 643 | throw new Zend_Db_Adapter_Db2_Exception('FETCH_BOUND is not supported yet'); |
| 644 | break; |
| 645 | default: |
| 646 | /** |
| 647 | * @see Zend_Db_Adapter_Db2_Exception |
| 648 | */ |
| 649 | // require_once 'Zend/Db/Adapter/Db2/Exception.php'; |
| 650 | throw new Zend_Db_Adapter_Db2_Exception("Invalid fetch mode '$mode' specified"); |
| 651 | break; |
| 652 | } |
| 653 | } |
| 654 | |
| 655 | /** |
| 656 | * Adds an adapter-specific LIMIT clause to the SELECT statement. |
| 657 | * |
| 658 | * @param string $sql |
| 659 | * @param integer $count |
| 660 | * @param integer $offset OPTIONAL |
| 661 | * @return string |
| 662 | */ |
| 663 | public function limit($sql, $count, $offset = 0) |
| 664 | { |
| 665 | $count = intval($count); |
| 666 | if ($count <= 0) { |
| 667 | /** |
| 668 | * @see Zend_Db_Adapter_Db2_Exception |
| 669 | */ |
| 670 | // require_once 'Zend/Db/Adapter/Db2/Exception.php'; |
| 671 | throw new Zend_Db_Adapter_Db2_Exception("LIMIT argument count=$count is not valid"); |
| 672 | } |
| 673 | |
| 674 | $offset = intval($offset); |
| 675 | if ($offset < 0) { |
| 676 | /** |
| 677 | * @see Zend_Db_Adapter_Db2_Exception |
| 678 | */ |
| 679 | // require_once 'Zend/Db/Adapter/Db2/Exception.php'; |
| 680 | throw new Zend_Db_Adapter_Db2_Exception("LIMIT argument offset=$offset is not valid"); |
| 681 | } |
| 682 | |
| 683 | if ($offset == 0) { |
| 684 | $limit_sql = $sql . " FETCH FIRST $count ROWS ONLY"; |
| 685 | return $limit_sql; |
| 686 | } |
| 687 | |
| 688 | /** |
| 689 | * DB2 does not implement the LIMIT clause as some RDBMS do. |
| 690 | * We have to simulate it with subqueries and ROWNUM. |
| 691 | * Unfortunately because we use the column wildcard "*", |
| 692 | * this puts an extra column into the query result set. |
| 693 | */ |
| 694 | $limit_sql = "SELECT z2.* |
| 695 | FROM ( |
| 696 | SELECT ROW_NUMBER() OVER() AS \"ZEND_DB_ROWNUM\", z1.* |
| 697 | FROM ( |
| 698 | " . $sql . " |
| 699 | ) z1 |
| 700 | ) z2 |
| 701 | WHERE z2.zend_db_rownum BETWEEN " . ($offset+1) . " AND " . ($offset+$count); |
| 702 | return $limit_sql; |
| 703 | } |
| 704 | |
| 705 | /** |
| 706 | * Check if the adapter supports real SQL parameters. |
| 707 | * |
| 708 | * @param string $type 'positional' or 'named' |
| 709 | * @return bool |
| 710 | */ |
| 711 | public function supportsParameters($type) |
| 712 | { |
| 713 | if ($type == 'positional') { |
| 714 | return true; |
| 715 | } |
| 716 | |
| 717 | // if its 'named' or anything else |
| 718 | return false; |
| 719 | } |
| 720 | |
| 721 | /** |
| 722 | * Retrieve server version in PHP style |
| 723 | * |
| 724 | * @return string |
| 725 | */ |
| 726 | public function getServerVersion() |
| 727 | { |
| 728 | $this->_connect(); |
| 729 | $server_info = db2_server_info($this->_connection); |
| 730 | if ($server_info !== false) { |
| 731 | $version = $server_info->DBMS_VER; |
| 732 | if ($this->_isI5) { |
| 733 | $version = (int) substr($version, 0, 2) . '.' . (int) substr($version, 2, 2) . '.' . (int) substr($version, 4); |
| 734 | } |
| 735 | return $version; |
| 736 | } else { |
| 737 | return null; |
| 738 | } |
| 739 | } |
| 740 | |
| 741 | /** |
| 742 | * Return whether or not this is running on i5 |
| 743 | * |
| 744 | * @return bool |
| 745 | */ |
| 746 | public function isI5() |
| 747 | { |
| 748 | if ($this->_isI5 === null) { |
| 749 | $this->_determineI5(); |
| 750 | } |
| 751 | |
| 752 | return (bool) $this->_isI5; |
| 753 | } |
| 754 | |
| 755 | /** |
| 756 | * Check the connection parameters according to verify |
| 757 | * type of used OS |
| 758 | * |
| 759 | * @return void |
| 760 | */ |
| 761 | protected function _determineI5() |
| 762 | { |
| 763 | // first us the compiled flag. |
| 764 | $this->_isI5 = (php_uname('s') == 'OS400') ? true : false; |
| 765 | |
| 766 | // if this is set, then us it |
| 767 | if (isset($this->_config['os'])){ |
| 768 | if (strtolower($this->_config['os']) === 'i5') { |
| 769 | $this->_isI5 = true; |
| 770 | } else { |
| 771 | // any other value passed in, its null |
| 772 | $this->_isI5 = false; |
| 773 | } |
| 774 | } |
| 775 | |
| 776 | } |
| 777 | |
| 778 | /** |
| 779 | * Db2 On I5 specific method |
| 780 | * |
| 781 | * Returns a list of the tables in the database . |
| 782 | * Used only for DB2/400. |
| 783 | * |
| 784 | * @return array |
| 785 | */ |
| 786 | protected function _i5listTables($schema = null) |
| 787 | { |
| 788 | //list of i5 libraries. |
| 789 | $tables = array(); |
| 790 | if ($schema) { |
| 791 | $tablesStatement = db2_tables($this->_connection, null, $schema); |
| 792 | while ($rowTables = db2_fetch_assoc($tablesStatement) ) { |
| 793 | if ($rowTables['TABLE_NAME'] !== null) { |
| 794 | $tables[] = $rowTables['TABLE_NAME']; |
| 795 | } |
| 796 | } |
| 797 | } else { |
| 798 | $schemaStatement = db2_tables($this->_connection); |
| 799 | while ($schema = db2_fetch_assoc($schemaStatement)) { |
| 800 | if ($schema['TABLE_SCHEM'] !== null) { |
| 801 | // list of the tables which belongs to the selected library |
| 802 | $tablesStatement = db2_tables($this->_connection, NULL, $schema['TABLE_SCHEM']); |
| 803 | if (is_resource($tablesStatement)) { |
| 804 | while ($rowTables = db2_fetch_assoc($tablesStatement) ) { |
| 805 | if ($rowTables['TABLE_NAME'] !== null) { |
| 806 | $tables[] = $rowTables['TABLE_NAME']; |
| 807 | } |
| 808 | } |
| 809 | } |
| 810 | } |
| 811 | } |
| 812 | } |
| 813 | |
| 814 | return $tables; |
| 815 | } |
| 816 | |
| 817 | protected function _i5LastInsertId($objectName = null, $idType = null) |
| 818 | { |
| 819 | |
| 820 | if ($objectName === null) { |
| 821 | $sql = 'SELECT IDENTITY_VAL_LOCAL() AS VAL FROM QSYS2.QSQPTABL'; |
| 822 | $value = $this->fetchOne($sql); |
| 823 | return $value; |
| 824 | } |
| 825 | |
| 826 | if (strtoupper($idType) === 'S'){ |
| 827 | //check i5_lib option |
| 828 | $sequenceName = $objectName; |
| 829 | return $this->lastSequenceId($sequenceName); |
| 830 | } |
| 831 | |
| 832 | //returns last identity value for the specified table |
| 833 | //if (strtoupper($idType) === 'I') { |
| 834 | $tableName = $objectName; |
| 835 | return $this->fetchOne('SELECT IDENTITY_VAL_LOCAL() from ' . $this->quoteIdentifier($tableName)); |
| 836 | } |
| 837 | |
| 838 | } |
| 839 | |
| 840 | |
| 841 |