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Oci.php
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| 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: Oci.php 23775 2011-03-01 17:25:24Z ralph $ |
| 21 | */ |
| 22 | |
| 23 | |
| 24 | /** |
| 25 | * @see Zend_Db_Adapter_Pdo_Abstract |
| 26 | */ |
| 27 | // require_once 'Zend/Db/Adapter/Pdo/Abstract.php'; |
| 28 | |
| 29 | |
| 30 | /** |
| 31 | * Class for connecting to Oracle databases and performing common operations. |
| 32 | * |
| 33 | * @category Zend |
| 34 | * @package Zend_Db |
| 35 | * @subpackage Adapter |
| 36 | * @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com) |
| 37 | * @license http://framework.zend.com/license/new-bsd New BSD License |
| 38 | */ |
| 39 | class Zend_Db_Adapter_Pdo_Oci extends Zend_Db_Adapter_Pdo_Abstract |
| 40 | { |
| 41 | |
| 42 | /** |
| 43 | * PDO type. |
| 44 | * |
| 45 | * @var string |
| 46 | */ |
| 47 | protected $_pdoType = 'oci'; |
| 48 | |
| 49 | /** |
| 50 | * Default class name for a DB statement. |
| 51 | * |
| 52 | * @var string |
| 53 | */ |
| 54 | protected $_defaultStmtClass = 'Zend_Db_Statement_Pdo_Oci'; |
| 55 | |
| 56 | /** |
| 57 | * Keys are UPPERCASE SQL datatypes or the constants |
| 58 | * Zend_Db::INT_TYPE, Zend_Db::BIGINT_TYPE, or Zend_Db::FLOAT_TYPE. |
| 59 | * |
| 60 | * Values are: |
| 61 | * 0 = 32-bit integer |
| 62 | * 1 = 64-bit integer |
| 63 | * 2 = float or decimal |
| 64 | * |
| 65 | * @var array Associative array of datatypes to values 0, 1, or 2. |
| 66 | */ |
| 67 | protected $_numericDataTypes = array( |
| 68 | Zend_Db::INT_TYPE => Zend_Db::INT_TYPE, |
| 69 | Zend_Db::BIGINT_TYPE => Zend_Db::BIGINT_TYPE, |
| 70 | Zend_Db::FLOAT_TYPE => Zend_Db::FLOAT_TYPE, |
| 71 | 'BINARY_DOUBLE' => Zend_Db::FLOAT_TYPE, |
| 72 | 'BINARY_FLOAT' => Zend_Db::FLOAT_TYPE, |
| 73 | 'NUMBER' => Zend_Db::FLOAT_TYPE |
| 74 | ); |
| 75 | |
| 76 | /** |
| 77 | * Creates a PDO DSN for the adapter from $this->_config settings. |
| 78 | * |
| 79 | * @return string |
| 80 | */ |
| 81 | protected function _dsn() |
| 82 | { |
| 83 | // baseline of DSN parts |
| 84 | $dsn = $this->_config; |
| 85 | |
| 86 | if (isset($dsn['host'])) { |
| 87 | $tns = 'dbname=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)' . |
| 88 | '(HOST=' . $dsn['host'] . ')'; |
| 89 | |
| 90 | if (isset($dsn['port'])) { |
| 91 | $tns .= '(PORT=' . $dsn['port'] . ')'; |
| 92 | } else { |
| 93 | $tns .= '(PORT=1521)'; |
| 94 | } |
| 95 | |
| 96 | $tns .= '))(CONNECT_DATA=(SID=' . $dsn['dbname'] . ')))'; |
| 97 | } else { |
| 98 | $tns = 'dbname=' . $dsn['dbname']; |
| 99 | } |
| 100 | |
| 101 | if (isset($dsn['charset'])) { |
| 102 | $tns .= ';charset=' . $dsn['charset']; |
| 103 | } |
| 104 | |
| 105 | return $this->_pdoType . ':' . $tns; |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * Quote a raw string. |
| 110 | * Most PDO drivers have an implementation for the quote() method, |
| 111 | * but the Oracle OCI driver must use the same implementation as the |
| 112 | * Zend_Db_Adapter_Abstract class. |
| 113 | * |
| 114 | * @param string $value Raw string |
| 115 | * @return string Quoted string |
| 116 | */ |
| 117 | protected function _quote($value) |
| 118 | { |
| 119 | if (is_int($value) || is_float($value)) { |
| 120 | return $value; |
| 121 | } |
| 122 | $value = str_replace("'", "''", $value); |
| 123 | return "'" . addcslashes($value, "\000\n\r\\\032") . "'"; |
| 124 | } |
| 125 | |
| 126 | /** |
| 127 | * Quote a table identifier and alias. |
| 128 | * |
| 129 | * @param string|array|Zend_Db_Expr $ident The identifier or expression. |
| 130 | * @param string $alias An alias for the table. |
| 131 | * @return string The quoted identifier and alias. |
| 132 | */ |
| 133 | public function quoteTableAs($ident, $alias = null, $auto = false) |
| 134 | { |
| 135 | // Oracle doesn't allow the 'AS' keyword between the table identifier/expression and alias. |
| 136 | return $this->_quoteIdentifierAs($ident, $alias, $auto, ' '); |
| 137 | } |
| 138 | |
| 139 | /** |
| 140 | * Returns a list of the tables in the database. |
| 141 | * |
| 142 | * @return array |
| 143 | */ |
| 144 | public function listTables() |
| 145 | { |
| 146 | $data = $this->fetchCol('SELECT table_name FROM all_tables'); |
| 147 | return $data; |
| 148 | } |
| 149 | |
| 150 | /** |
| 151 | * Returns the column descriptions for a table. |
| 152 | * |
| 153 | * The return value is an associative array keyed by the column name, |
| 154 | * as returned by the RDBMS. |
| 155 | * |
| 156 | * The value of each array element is an associative array |
| 157 | * with the following keys: |
| 158 | * |
| 159 | * SCHEMA_NAME => string; name of schema |
| 160 | * TABLE_NAME => string; |
| 161 | * COLUMN_NAME => string; column name |
| 162 | * COLUMN_POSITION => number; ordinal position of column in table |
| 163 | * DATA_TYPE => string; SQL datatype name of column |
| 164 | * DEFAULT => string; default expression of column, null if none |
| 165 | * NULLABLE => boolean; true if column can have nulls |
| 166 | * LENGTH => number; length of CHAR/VARCHAR |
| 167 | * SCALE => number; scale of NUMERIC/DECIMAL |
| 168 | * PRECISION => number; precision of NUMERIC/DECIMAL |
| 169 | * UNSIGNED => boolean; unsigned property of an integer type |
| 170 | * PRIMARY => boolean; true if column is part of the primary key |
| 171 | * PRIMARY_POSITION => integer; position of column in primary key |
| 172 | * IDENTITY => integer; true if column is auto-generated with unique values |
| 173 | * |
| 174 | * @todo Discover integer unsigned property. |
| 175 | * |
| 176 | * @param string $tableName |
| 177 | * @param string $schemaName OPTIONAL |
| 178 | * @return array |
| 179 | */ |
| 180 | public function describeTable($tableName, $schemaName = null) |
| 181 | { |
| 182 | $version = $this->getServerVersion(); |
| 183 | if (($version === null) || version_compare($version, '9.0.0', '>=')) { |
| 184 | $sql = "SELECT TC.TABLE_NAME, TC.OWNER, TC.COLUMN_NAME, TC.DATA_TYPE, |
| 185 | TC.DATA_DEFAULT, TC.NULLABLE, TC.COLUMN_ID, TC.DATA_LENGTH, |
| 186 | TC.DATA_SCALE, TC.DATA_PRECISION, C.CONSTRAINT_TYPE, CC.POSITION |
| 187 | FROM ALL_TAB_COLUMNS TC |
| 188 | LEFT JOIN (ALL_CONS_COLUMNS CC JOIN ALL_CONSTRAINTS C |
| 189 | ON (CC.CONSTRAINT_NAME = C.CONSTRAINT_NAME AND CC.TABLE_NAME = C.TABLE_NAME AND CC.OWNER = C.OWNER AND C.CONSTRAINT_TYPE = 'P')) |
| 190 | ON TC.TABLE_NAME = CC.TABLE_NAME AND TC.COLUMN_NAME = CC.COLUMN_NAME |
| 191 | WHERE UPPER(TC.TABLE_NAME) = UPPER(:TBNAME)"; |
| 192 | $bind[':TBNAME'] = $tableName; |
| 193 | if ($schemaName) { |
| 194 | $sql .= ' AND UPPER(TC.OWNER) = UPPER(:SCNAME)'; |
| 195 | $bind[':SCNAME'] = $schemaName; |
| 196 | } |
| 197 | $sql .= ' ORDER BY TC.COLUMN_ID'; |
| 198 | } else { |
| 199 | $subSql="SELECT AC.OWNER, AC.TABLE_NAME, ACC.COLUMN_NAME, AC.CONSTRAINT_TYPE, ACC.POSITION |
| 200 | from ALL_CONSTRAINTS AC, ALL_CONS_COLUMNS ACC |
| 201 | WHERE ACC.CONSTRAINT_NAME = AC.CONSTRAINT_NAME |
| 202 | AND ACC.TABLE_NAME = AC.TABLE_NAME |
| 203 | AND ACC.OWNER = AC.OWNER |
| 204 | AND AC.CONSTRAINT_TYPE = 'P' |
| 205 | AND UPPER(AC.TABLE_NAME) = UPPER(:TBNAME)"; |
| 206 | $bind[':TBNAME'] = $tableName; |
| 207 | if ($schemaName) { |
| 208 | $subSql .= ' AND UPPER(ACC.OWNER) = UPPER(:SCNAME)'; |
| 209 | $bind[':SCNAME'] = $schemaName; |
| 210 | } |
| 211 | $sql="SELECT TC.TABLE_NAME, TC.OWNER, TC.COLUMN_NAME, TC.DATA_TYPE, |
| 212 | TC.DATA_DEFAULT, TC.NULLABLE, TC.COLUMN_ID, TC.DATA_LENGTH, |
| 213 | TC.DATA_SCALE, TC.DATA_PRECISION, CC.CONSTRAINT_TYPE, CC.POSITION |
| 214 | FROM ALL_TAB_COLUMNS TC, ($subSql) CC |
| 215 | WHERE UPPER(TC.TABLE_NAME) = UPPER(:TBNAME) |
| 216 | AND TC.OWNER = CC.OWNER(+) AND TC.TABLE_NAME = CC.TABLE_NAME(+) AND TC.COLUMN_NAME = CC.COLUMN_NAME(+)"; |
| 217 | if ($schemaName) { |
| 218 | $sql .= ' AND UPPER(TC.OWNER) = UPPER(:SCNAME)'; |
| 219 | } |
| 220 | $sql .= ' ORDER BY TC.COLUMN_ID'; |
| 221 | } |
| 222 | |
| 223 | $stmt = $this->query($sql, $bind); |
| 224 | |
| 225 | /** |
| 226 | * Use FETCH_NUM so we are not dependent on the CASE attribute of the PDO connection |
| 227 | */ |
| 228 | $result = $stmt->fetchAll(Zend_Db::FETCH_NUM); |
| 229 | |
| 230 | $table_name = 0; |
| 231 | $owner = 1; |
| 232 | $column_name = 2; |
| 233 | $data_type = 3; |
| 234 | $data_default = 4; |
| 235 | $nullable = 5; |
| 236 | $column_id = 6; |
| 237 | $data_length = 7; |
| 238 | $data_scale = 8; |
| 239 | $data_precision = 9; |
| 240 | $constraint_type = 10; |
| 241 | $position = 11; |
| 242 | |
| 243 | $desc = array(); |
| 244 | foreach ($result as $key => $row) { |
| 245 | list ($primary, $primaryPosition, $identity) = array(false, null, false); |
| 246 | if ($row[$constraint_type] == 'P') { |
| 247 | $primary = true; |
| 248 | $primaryPosition = $row[$position]; |
| 249 | /** |
| 250 | * Oracle does not support auto-increment keys. |
| 251 | */ |
| 252 | $identity = false; |
| 253 | } |
| 254 | $desc[$this->foldCase($row[$column_name])] = array( |
| 255 | 'SCHEMA_NAME' => $this->foldCase($row[$owner]), |
| 256 | 'TABLE_NAME' => $this->foldCase($row[$table_name]), |
| 257 | 'COLUMN_NAME' => $this->foldCase($row[$column_name]), |
| 258 | 'COLUMN_POSITION' => $row[$column_id], |
| 259 | 'DATA_TYPE' => $row[$data_type], |
| 260 | 'DEFAULT' => $row[$data_default], |
| 261 | 'NULLABLE' => (bool) ($row[$nullable] == 'Y'), |
| 262 | 'LENGTH' => $row[$data_length], |
| 263 | 'SCALE' => $row[$data_scale], |
| 264 | 'PRECISION' => $row[$data_precision], |
| 265 | 'UNSIGNED' => null, // @todo |
| 266 | 'PRIMARY' => $primary, |
| 267 | 'PRIMARY_POSITION' => $primaryPosition, |
| 268 | 'IDENTITY' => $identity |
| 269 | ); |
| 270 | } |
| 271 | return $desc; |
| 272 | } |
| 273 | |
| 274 | /** |
| 275 | * Return the most recent value from the specified sequence in the database. |
| 276 | * This is supported only on RDBMS brands that support sequences |
| 277 | * (e.g. Oracle, PostgreSQL, DB2). Other RDBMS brands return null. |
| 278 | * |
| 279 | * @param string $sequenceName |
| 280 | * @return integer |
| 281 | */ |
| 282 | public function lastSequenceId($sequenceName) |
| 283 | { |
| 284 | $this->_connect(); |
| 285 | $value = $this->fetchOne('SELECT '.$this->quoteIdentifier($sequenceName, true).'.CURRVAL FROM dual'); |
| 286 | return $value; |
| 287 | } |
| 288 | |
| 289 | /** |
| 290 | * Generate a new value from the specified sequence in the database, and return it. |
| 291 | * This is supported only on RDBMS brands that support sequences |
| 292 | * (e.g. Oracle, PostgreSQL, DB2). Other RDBMS brands return null. |
| 293 | * |
| 294 | * @param string $sequenceName |
| 295 | * @return integer |
| 296 | */ |
| 297 | public function nextSequenceId($sequenceName) |
| 298 | { |
| 299 | $this->_connect(); |
| 300 | $value = $this->fetchOne('SELECT '.$this->quoteIdentifier($sequenceName, true).'.NEXTVAL FROM dual'); |
| 301 | return $value; |
| 302 | } |
| 303 | |
| 304 | /** |
| 305 | * Gets the last ID generated automatically by an IDENTITY/AUTOINCREMENT column. |
| 306 | * |
| 307 | * As a convention, on RDBMS brands that support sequences |
| 308 | * (e.g. Oracle, PostgreSQL, DB2), this method forms the name of a sequence |
| 309 | * from the arguments and returns the last id generated by that sequence. |
| 310 | * On RDBMS brands that support IDENTITY/AUTOINCREMENT columns, this method |
| 311 | * returns the last value generated for such a column, and the table name |
| 312 | * argument is disregarded. |
| 313 | * |
| 314 | * Oracle does not support IDENTITY columns, so if the sequence is not |
| 315 | * specified, this method returns null. |
| 316 | * |
| 317 | * @param string $tableName OPTIONAL Name of table. |
| 318 | * @param string $primaryKey OPTIONAL Name of primary key column. |
| 319 | * @return string |
| 320 | * @throws Zend_Db_Adapter_Oracle_Exception |
| 321 | */ |
| 322 | public function lastInsertId($tableName = null, $primaryKey = null) |
| 323 | { |
| 324 | if ($tableName !== null) { |
| 325 | $sequenceName = $tableName; |
| 326 | if ($primaryKey) { |
| 327 | $sequenceName .= $this->foldCase("_$primaryKey"); |
| 328 | } |
| 329 | $sequenceName .= $this->foldCase('_seq'); |
| 330 | return $this->lastSequenceId($sequenceName); |
| 331 | } |
| 332 | // No support for IDENTITY columns; return null |
| 333 | return null; |
| 334 | } |
| 335 | |
| 336 | /** |
| 337 | * Adds an adapter-specific LIMIT clause to the SELECT statement. |
| 338 | * |
| 339 | * @param string $sql |
| 340 | * @param integer $count |
| 341 | * @param integer $offset |
| 342 | * @throws Zend_Db_Adapter_Exception |
| 343 | * @return string |
| 344 | */ |
| 345 | public function limit($sql, $count, $offset = 0) |
| 346 | { |
| 347 | $count = intval($count); |
| 348 | if ($count <= 0) { |
| 349 | /** @see Zend_Db_Adapter_Exception */ |
| 350 | // require_once 'Zend/Db/Adapter/Exception.php'; |
| 351 | throw new Zend_Db_Adapter_Exception("LIMIT argument count=$count is not valid"); |
| 352 | } |
| 353 | |
| 354 | $offset = intval($offset); |
| 355 | if ($offset < 0) { |
| 356 | /** @see Zend_Db_Adapter_Exception */ |
| 357 | // require_once 'Zend/Db/Adapter/Exception.php'; |
| 358 | throw new Zend_Db_Adapter_Exception("LIMIT argument offset=$offset is not valid"); |
| 359 | } |
| 360 | |
| 361 | /** |
| 362 | * Oracle does not implement the LIMIT clause as some RDBMS do. |
| 363 | * We have to simulate it with subqueries and ROWNUM. |
| 364 | * Unfortunately because we use the column wildcard "*", |
| 365 | * this puts an extra column into the query result set. |
| 366 | */ |
| 367 | $limit_sql = "SELECT z2.* |
| 368 | FROM ( |
| 369 | SELECT z1.*, ROWNUM AS \"zend_db_rownum\" |
| 370 | FROM ( |
| 371 | " . $sql . " |
| 372 | ) z1 |
| 373 | ) z2 |
| 374 | WHERE z2.\"zend_db_rownum\" BETWEEN " . ($offset+1) . " AND " . ($offset+$count); |
| 375 | return $limit_sql; |
| 376 | } |
| 377 | |
| 378 | } |
| 379 |