/concrete/libraries/3rdparty/Zend/Db/Adapter/Pdo/Mysql.php
PHP | 270 lines | 137 code | 22 blank | 111 comment | 22 complexity | 4c699a91a8447b30981f5bfc74d67065 MD5 | raw file
- <?php
- /**
- * Zend Framework
- *
- * LICENSE
- *
- * This source file is subject to the new BSD license that is bundled
- * with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://framework.zend.com/license/new-bsd
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@zend.com so we can send you a copy immediately.
- *
- * @category Zend
- * @package Zend_Db
- * @subpackage Adapter
- * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- * @version $Id: Mysql.php 24593 2012-01-05 20:35:02Z matthew $
- */
- /**
- * @see Zend_Db_Adapter_Pdo_Abstract
- */
- require_once 'Zend/Db/Adapter/Pdo/Abstract.php';
- /**
- * Class for connecting to MySQL databases and performing common operations.
- *
- * @category Zend
- * @package Zend_Db
- * @subpackage Adapter
- * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- */
- class Zend_Db_Adapter_Pdo_Mysql extends Zend_Db_Adapter_Pdo_Abstract
- {
- /**
- * PDO type.
- *
- * @var string
- */
- protected $_pdoType = 'mysql';
- /**
- * Keys are UPPERCASE SQL datatypes or the constants
- * Zend_Db::INT_TYPE, Zend_Db::BIGINT_TYPE, or Zend_Db::FLOAT_TYPE.
- *
- * Values are:
- * 0 = 32-bit integer
- * 1 = 64-bit integer
- * 2 = float or decimal
- *
- * @var array Associative array of datatypes to values 0, 1, or 2.
- */
- protected $_numericDataTypes = array(
- Zend_Db::INT_TYPE => Zend_Db::INT_TYPE,
- Zend_Db::BIGINT_TYPE => Zend_Db::BIGINT_TYPE,
- Zend_Db::FLOAT_TYPE => Zend_Db::FLOAT_TYPE,
- 'INT' => Zend_Db::INT_TYPE,
- 'INTEGER' => Zend_Db::INT_TYPE,
- 'MEDIUMINT' => Zend_Db::INT_TYPE,
- 'SMALLINT' => Zend_Db::INT_TYPE,
- 'TINYINT' => Zend_Db::INT_TYPE,
- 'BIGINT' => Zend_Db::BIGINT_TYPE,
- 'SERIAL' => Zend_Db::BIGINT_TYPE,
- 'DEC' => Zend_Db::FLOAT_TYPE,
- 'DECIMAL' => Zend_Db::FLOAT_TYPE,
- 'DOUBLE' => Zend_Db::FLOAT_TYPE,
- 'DOUBLE PRECISION' => Zend_Db::FLOAT_TYPE,
- 'FIXED' => Zend_Db::FLOAT_TYPE,
- 'FLOAT' => Zend_Db::FLOAT_TYPE
- );
- /**
- * Override _dsn() and ensure that charset is incorporated in mysql
- * @see Zend_Db_Adapter_Pdo_Abstract::_dsn()
- */
- protected function _dsn()
- {
- $dsn = parent::_dsn();
- if (isset($this->_config['charset'])) {
- $dsn .= ';charset=' . $this->_config['charset'];
- }
- return $dsn;
- }
-
- /**
- * Creates a PDO object and connects to the database.
- *
- * @return void
- * @throws Zend_Db_Adapter_Exception
- */
- protected function _connect()
- {
- if ($this->_connection) {
- return;
- }
- if (!empty($this->_config['charset'])) {
- $initCommand = "SET NAMES '" . $this->_config['charset'] . "'";
- $this->_config['driver_options'][1002] = $initCommand; // 1002 = PDO::MYSQL_ATTR_INIT_COMMAND
- }
- parent::_connect();
- }
- /**
- * @return string
- */
- public function getQuoteIdentifierSymbol()
- {
- return "`";
- }
- /**
- * Returns a list of the tables in the database.
- *
- * @return array
- */
- public function listTables()
- {
- return $this->fetchCol('SHOW TABLES');
- }
- /**
- * Returns the column descriptions for a table.
- *
- * The return value is an associative array keyed by the column name,
- * as returned by the RDBMS.
- *
- * The value of each array element is an associative array
- * with the following keys:
- *
- * SCHEMA_NAME => string; name of database or schema
- * TABLE_NAME => string;
- * COLUMN_NAME => string; column name
- * COLUMN_POSITION => number; ordinal position of column in table
- * DATA_TYPE => string; SQL datatype name of column
- * DEFAULT => string; default expression of column, null if none
- * NULLABLE => boolean; true if column can have nulls
- * LENGTH => number; length of CHAR/VARCHAR
- * SCALE => number; scale of NUMERIC/DECIMAL
- * PRECISION => number; precision of NUMERIC/DECIMAL
- * UNSIGNED => boolean; unsigned property of an integer type
- * PRIMARY => boolean; true if column is part of the primary key
- * PRIMARY_POSITION => integer; position of column in primary key
- * IDENTITY => integer; true if column is auto-generated with unique values
- *
- * @param string $tableName
- * @param string $schemaName OPTIONAL
- * @return array
- */
- public function describeTable($tableName, $schemaName = null)
- {
- // @todo use INFORMATION_SCHEMA someday when MySQL's
- // implementation has reasonably good performance and
- // the version with this improvement is in wide use.
- if ($schemaName) {
- $sql = 'DESCRIBE ' . $this->quoteIdentifier("$schemaName.$tableName", true);
- } else {
- $sql = 'DESCRIBE ' . $this->quoteIdentifier($tableName, true);
- }
- $stmt = $this->query($sql);
- // Use FETCH_NUM so we are not dependent on the CASE attribute of the PDO connection
- $result = $stmt->fetchAll(Zend_Db::FETCH_NUM);
- $field = 0;
- $type = 1;
- $null = 2;
- $key = 3;
- $default = 4;
- $extra = 5;
- $desc = array();
- $i = 1;
- $p = 1;
- foreach ($result as $row) {
- list($length, $scale, $precision, $unsigned, $primary, $primaryPosition, $identity)
- = array(null, null, null, null, false, null, false);
- if (preg_match('/unsigned/', $row[$type])) {
- $unsigned = true;
- }
- if (preg_match('/^((?:var)?char)\((\d+)\)/', $row[$type], $matches)) {
- $row[$type] = $matches[1];
- $length = $matches[2];
- } else if (preg_match('/^decimal\((\d+),(\d+)\)/', $row[$type], $matches)) {
- $row[$type] = 'decimal';
- $precision = $matches[1];
- $scale = $matches[2];
- } else if (preg_match('/^float\((\d+),(\d+)\)/', $row[$type], $matches)) {
- $row[$type] = 'float';
- $precision = $matches[1];
- $scale = $matches[2];
- } else if (preg_match('/^((?:big|medium|small|tiny)?int)\((\d+)\)/', $row[$type], $matches)) {
- $row[$type] = $matches[1];
- // The optional argument of a MySQL int type is not precision
- // or length; it is only a hint for display width.
- }
- if (strtoupper($row[$key]) == 'PRI') {
- $primary = true;
- $primaryPosition = $p;
- if ($row[$extra] == 'auto_increment') {
- $identity = true;
- } else {
- $identity = false;
- }
- ++$p;
- }
- $desc[$this->foldCase($row[$field])] = array(
- 'SCHEMA_NAME' => null, // @todo
- 'TABLE_NAME' => $this->foldCase($tableName),
- 'COLUMN_NAME' => $this->foldCase($row[$field]),
- 'COLUMN_POSITION' => $i,
- 'DATA_TYPE' => $row[$type],
- 'DEFAULT' => $row[$default],
- 'NULLABLE' => (bool) ($row[$null] == 'YES'),
- 'LENGTH' => $length,
- 'SCALE' => $scale,
- 'PRECISION' => $precision,
- 'UNSIGNED' => $unsigned,
- 'PRIMARY' => $primary,
- 'PRIMARY_POSITION' => $primaryPosition,
- 'IDENTITY' => $identity
- );
- ++$i;
- }
- return $desc;
- }
- /**
- * Adds an adapter-specific LIMIT clause to the SELECT statement.
- *
- * @param string $sql
- * @param integer $count
- * @param integer $offset OPTIONAL
- * @throws Zend_Db_Adapter_Exception
- * @return string
- */
- public function limit($sql, $count, $offset = 0)
- {
- $count = intval($count);
- if ($count <= 0) {
- /** @see Zend_Db_Adapter_Exception */
- require_once 'Zend/Db/Adapter/Exception.php';
- throw new Zend_Db_Adapter_Exception("LIMIT argument count=$count is not valid");
- }
- $offset = intval($offset);
- if ($offset < 0) {
- /** @see Zend_Db_Adapter_Exception */
- require_once 'Zend/Db/Adapter/Exception.php';
- throw new Zend_Db_Adapter_Exception("LIMIT argument offset=$offset is not valid");
- }
- $sql .= " LIMIT $count";
- if ($offset > 0) {
- $sql .= " OFFSET $offset";
- }
- return $sql;
- }
- }