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Abstract.php
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Ibm.php
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Pgsql.php
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Pgsql.php
337 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: Pgsql.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 PostgreSQL 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_Pgsql extends Zend_Db_Adapter_Pdo_Abstract |
| 40 | { |
| 41 | |
| 42 | /** |
| 43 | * PDO type. |
| 44 | * |
| 45 | * @var string |
| 46 | */ |
| 47 | protected $_pdoType = 'pgsql'; |
| 48 | |
| 49 | /** |
| 50 | * Keys are UPPERCASE SQL datatypes or the constants |
| 51 | * Zend_Db::INT_TYPE, Zend_Db::BIGINT_TYPE, or Zend_Db::FLOAT_TYPE. |
| 52 | * |
| 53 | * Values are: |
| 54 | * 0 = 32-bit integer |
| 55 | * 1 = 64-bit integer |
| 56 | * 2 = float or decimal |
| 57 | * |
| 58 | * @var array Associative array of datatypes to values 0, 1, or 2. |
| 59 | */ |
| 60 | protected $_numericDataTypes = array( |
| 61 | Zend_Db::INT_TYPE => Zend_Db::INT_TYPE, |
| 62 | Zend_Db::BIGINT_TYPE => Zend_Db::BIGINT_TYPE, |
| 63 | Zend_Db::FLOAT_TYPE => Zend_Db::FLOAT_TYPE, |
| 64 | 'INTEGER' => Zend_Db::INT_TYPE, |
| 65 | 'SERIAL' => Zend_Db::INT_TYPE, |
| 66 | 'SMALLINT' => Zend_Db::INT_TYPE, |
| 67 | 'BIGINT' => Zend_Db::BIGINT_TYPE, |
| 68 | 'BIGSERIAL' => Zend_Db::BIGINT_TYPE, |
| 69 | 'DECIMAL' => Zend_Db::FLOAT_TYPE, |
| 70 | 'DOUBLE PRECISION' => Zend_Db::FLOAT_TYPE, |
| 71 | 'NUMERIC' => Zend_Db::FLOAT_TYPE, |
| 72 | 'REAL' => Zend_Db::FLOAT_TYPE |
| 73 | ); |
| 74 | |
| 75 | /** |
| 76 | * Creates a PDO object and connects to the database. |
| 77 | * |
| 78 | * @return void |
| 79 | * @throws Zend_Db_Adapter_Exception |
| 80 | */ |
| 81 | protected function _connect() |
| 82 | { |
| 83 | if ($this->_connection) { |
| 84 | return; |
| 85 | } |
| 86 | |
| 87 | parent::_connect(); |
| 88 | |
| 89 | if (!empty($this->_config['charset'])) { |
| 90 | $sql = "SET NAMES '" . $this->_config['charset'] . "'"; |
| 91 | $this->_connection->exec($sql); |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * Returns a list of the tables in the database. |
| 97 | * |
| 98 | * @return array |
| 99 | */ |
| 100 | public function listTables() |
| 101 | { |
| 102 | // @todo use a better query with joins instead of subqueries |
| 103 | $sql = "SELECT c.relname AS table_name " |
| 104 | . "FROM pg_class c, pg_user u " |
| 105 | . "WHERE c.relowner = u.usesysid AND c.relkind = 'r' " |
| 106 | . "AND NOT EXISTS (SELECT 1 FROM pg_views WHERE viewname = c.relname) " |
| 107 | . "AND c.relname !~ '^(pg_|sql_)' " |
| 108 | . "UNION " |
| 109 | . "SELECT c.relname AS table_name " |
| 110 | . "FROM pg_class c " |
| 111 | . "WHERE c.relkind = 'r' " |
| 112 | . "AND NOT EXISTS (SELECT 1 FROM pg_views WHERE viewname = c.relname) " |
| 113 | . "AND NOT EXISTS (SELECT 1 FROM pg_user WHERE usesysid = c.relowner) " |
| 114 | . "AND c.relname !~ '^pg_'"; |
| 115 | |
| 116 | return $this->fetchCol($sql); |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * Returns the column descriptions for a table. |
| 121 | * |
| 122 | * The return value is an associative array keyed by the column name, |
| 123 | * as returned by the RDBMS. |
| 124 | * |
| 125 | * The value of each array element is an associative array |
| 126 | * with the following keys: |
| 127 | * |
| 128 | * SCHEMA_NAME => string; name of database or schema |
| 129 | * TABLE_NAME => string; |
| 130 | * COLUMN_NAME => string; column name |
| 131 | * COLUMN_POSITION => number; ordinal position of column in table |
| 132 | * DATA_TYPE => string; SQL datatype name of column |
| 133 | * DEFAULT => string; default expression of column, null if none |
| 134 | * NULLABLE => boolean; true if column can have nulls |
| 135 | * LENGTH => number; length of CHAR/VARCHAR |
| 136 | * SCALE => number; scale of NUMERIC/DECIMAL |
| 137 | * PRECISION => number; precision of NUMERIC/DECIMAL |
| 138 | * UNSIGNED => boolean; unsigned property of an integer type |
| 139 | * PRIMARY => boolean; true if column is part of the primary key |
| 140 | * PRIMARY_POSITION => integer; position of column in primary key |
| 141 | * IDENTITY => integer; true if column is auto-generated with unique values |
| 142 | * |
| 143 | * @todo Discover integer unsigned property. |
| 144 | * |
| 145 | * @param string $tableName |
| 146 | * @param string $schemaName OPTIONAL |
| 147 | * @return array |
| 148 | */ |
| 149 | public function describeTable($tableName, $schemaName = null) |
| 150 | { |
| 151 | $sql = "SELECT |
| 152 | a.attnum, |
| 153 | n.nspname, |
| 154 | c.relname, |
| 155 | a.attname AS colname, |
| 156 | t.typname AS type, |
| 157 | a.atttypmod, |
| 158 | FORMAT_TYPE(a.atttypid, a.atttypmod) AS complete_type, |
| 159 | d.adsrc AS default_value, |
| 160 | a.attnotnull AS notnull, |
| 161 | a.attlen AS length, |
| 162 | co.contype, |
| 163 | ARRAY_TO_STRING(co.conkey, ',') AS conkey |
| 164 | FROM pg_attribute AS a |
| 165 | JOIN pg_class AS c ON a.attrelid = c.oid |
| 166 | JOIN pg_namespace AS n ON c.relnamespace = n.oid |
| 167 | JOIN pg_type AS t ON a.atttypid = t.oid |
| 168 | LEFT OUTER JOIN pg_constraint AS co ON (co.conrelid = c.oid |
| 169 | AND a.attnum = ANY(co.conkey) AND co.contype = 'p') |
| 170 | LEFT OUTER JOIN pg_attrdef AS d ON d.adrelid = c.oid AND d.adnum = a.attnum |
| 171 | WHERE a.attnum > 0 AND c.relname = ".$this->quote($tableName); |
| 172 | if ($schemaName) { |
| 173 | $sql .= " AND n.nspname = ".$this->quote($schemaName); |
| 174 | } |
| 175 | $sql .= ' ORDER BY a.attnum'; |
| 176 | |
| 177 | $stmt = $this->query($sql); |
| 178 | |
| 179 | // Use FETCH_NUM so we are not dependent on the CASE attribute of the PDO connection |
| 180 | $result = $stmt->fetchAll(Zend_Db::FETCH_NUM); |
| 181 | |
| 182 | $attnum = 0; |
| 183 | $nspname = 1; |
| 184 | $relname = 2; |
| 185 | $colname = 3; |
| 186 | $type = 4; |
| 187 | $atttypemod = 5; |
| 188 | $complete_type = 6; |
| 189 | $default_value = 7; |
| 190 | $notnull = 8; |
| 191 | $length = 9; |
| 192 | $contype = 10; |
| 193 | $conkey = 11; |
| 194 | |
| 195 | $desc = array(); |
| 196 | foreach ($result as $key => $row) { |
| 197 | $defaultValue = $row[$default_value]; |
| 198 | if ($row[$type] == 'varchar' || $row[$type] == 'bpchar' ) { |
| 199 | if (preg_match('/character(?: varying)?(?:\((\d+)\))?/', $row[$complete_type], $matches)) { |
| 200 | if (isset($matches[1])) { |
| 201 | $row[$length] = $matches[1]; |
| 202 | } else { |
| 203 | $row[$length] = null; // unlimited |
| 204 | } |
| 205 | } |
| 206 | if (preg_match("/^'(.*?)'::(?:character varying|bpchar)$/", $defaultValue, $matches)) { |
| 207 | $defaultValue = $matches[1]; |
| 208 | } |
| 209 | } |
| 210 | list($primary, $primaryPosition, $identity) = array(false, null, false); |
| 211 | if ($row[$contype] == 'p') { |
| 212 | $primary = true; |
| 213 | $primaryPosition = array_search($row[$attnum], explode(',', $row[$conkey])) + 1; |
| 214 | $identity = (bool) (preg_match('/^nextval/', $row[$default_value])); |
| 215 | } |
| 216 | $desc[$this->foldCase($row[$colname])] = array( |
| 217 | 'SCHEMA_NAME' => $this->foldCase($row[$nspname]), |
| 218 | 'TABLE_NAME' => $this->foldCase($row[$relname]), |
| 219 | 'COLUMN_NAME' => $this->foldCase($row[$colname]), |
| 220 | 'COLUMN_POSITION' => $row[$attnum], |
| 221 | 'DATA_TYPE' => $row[$type], |
| 222 | 'DEFAULT' => $defaultValue, |
| 223 | 'NULLABLE' => (bool) ($row[$notnull] != 't'), |
| 224 | 'LENGTH' => $row[$length], |
| 225 | 'SCALE' => null, // @todo |
| 226 | 'PRECISION' => null, // @todo |
| 227 | 'UNSIGNED' => null, // @todo |
| 228 | 'PRIMARY' => $primary, |
| 229 | 'PRIMARY_POSITION' => $primaryPosition, |
| 230 | 'IDENTITY' => $identity |
| 231 | ); |
| 232 | } |
| 233 | return $desc; |
| 234 | } |
| 235 | |
| 236 | |
| 237 | /** |
| 238 | * Adds an adapter-specific LIMIT clause to the SELECT statement. |
| 239 | * |
| 240 | * @param string $sql |
| 241 | * @param integer $count |
| 242 | * @param integer $offset OPTIONAL |
| 243 | * @return string |
| 244 | */ |
| 245 | public function limit($sql, $count, $offset = 0) |
| 246 | { |
| 247 | $count = intval($count); |
| 248 | if ($count <= 0) { |
| 249 | /** |
| 250 | * @see Zend_Db_Adapter_Exception |
| 251 | */ |
| 252 | // require_once 'Zend/Db/Adapter/Exception.php'; |
| 253 | throw new Zend_Db_Adapter_Exception("LIMIT argument count=$count is not valid"); |
| 254 | } |
| 255 | |
| 256 | $offset = intval($offset); |
| 257 | if ($offset < 0) { |
| 258 | /** |
| 259 | * @see Zend_Db_Adapter_Exception |
| 260 | */ |
| 261 | // require_once 'Zend/Db/Adapter/Exception.php'; |
| 262 | throw new Zend_Db_Adapter_Exception("LIMIT argument offset=$offset is not valid"); |
| 263 | } |
| 264 | |
| 265 | $sql .= " LIMIT $count"; |
| 266 | if ($offset > 0) { |
| 267 | $sql .= " OFFSET $offset"; |
| 268 | } |
| 269 | |
| 270 | return $sql; |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * Return the most recent value from the specified sequence in the database. |
| 275 | * This is supported only on RDBMS brands that support sequences |
| 276 | * (e.g. Oracle, PostgreSQL, DB2). Other RDBMS brands return null. |
| 277 | * |
| 278 | * @param string $sequenceName |
| 279 | * @return string |
| 280 | */ |
| 281 | public function lastSequenceId($sequenceName) |
| 282 | { |
| 283 | $this->_connect(); |
| 284 | $sequenceName = str_replace($this->getQuoteIdentifierSymbol(), '', (string) $sequenceName); |
| 285 | $value = $this->fetchOne("SELECT CURRVAL(" |
| 286 | . $this->quote($this->quoteIdentifier($sequenceName, true)) |
| 287 | . ")"); |
| 288 | return $value; |
| 289 | } |
| 290 | |
| 291 | /** |
| 292 | * Generate a new value from the specified sequence in the database, and return it. |
| 293 | * This is supported only on RDBMS brands that support sequences |
| 294 | * (e.g. Oracle, PostgreSQL, DB2). Other RDBMS brands return null. |
| 295 | * |
| 296 | * @param string $sequenceName |
| 297 | * @return string |
| 298 | */ |
| 299 | public function nextSequenceId($sequenceName) |
| 300 | { |
| 301 | $this->_connect(); |
| 302 | $sequenceName = str_replace($this->getQuoteIdentifierSymbol(), '', (string) $sequenceName); |
| 303 | $value = $this->fetchOne("SELECT NEXTVAL(" |
| 304 | . $this->quote($this->quoteIdentifier($sequenceName, true)) |
| 305 | . ")"); |
| 306 | return $value; |
| 307 | } |
| 308 | |
| 309 | /** |
| 310 | * Gets the last ID generated automatically by an IDENTITY/AUTOINCREMENT column. |
| 311 | * |
| 312 | * As a convention, on RDBMS brands that support sequences |
| 313 | * (e.g. Oracle, PostgreSQL, DB2), this method forms the name of a sequence |
| 314 | * from the arguments and returns the last id generated by that sequence. |
| 315 | * On RDBMS brands that support IDENTITY/AUTOINCREMENT columns, this method |
| 316 | * returns the last value generated for such a column, and the table name |
| 317 | * argument is disregarded. |
| 318 | * |
| 319 | * @param string $tableName OPTIONAL Name of table. |
| 320 | * @param string $primaryKey OPTIONAL Name of primary key column. |
| 321 | * @return string |
| 322 | */ |
| 323 | public function lastInsertId($tableName = null, $primaryKey = null) |
| 324 | { |
| 325 | if ($tableName !== null) { |
| 326 | $sequenceName = $tableName; |
| 327 | if ($primaryKey) { |
| 328 | $sequenceName .= "_$primaryKey"; |
| 329 | } |
| 330 | $sequenceName .= '_seq'; |
| 331 | return $this->lastSequenceId($sequenceName); |
| 332 | } |
| 333 | return $this->_connection->lastInsertId($tableName); |
| 334 | } |
| 335 | |
| 336 | } |
| 337 |