258 lines
8.8 KiB
PHP
258 lines
8.8 KiB
PHP
<?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) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
|
|
* @license http://framework.zend.com/license/new-bsd New BSD License
|
|
* @version $Id: Mysql.php 16942 2009-07-22 04:03:09Z ralph $
|
|
*/
|
|
|
|
|
|
/**
|
|
* @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) 2005-2009 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 $_numericDataTypes = array(
|
|
Zend_Db::INT_TYPE => Zend_Db::INT_TYPE,
|
|
Zend_Db::BIGINT_TYPE => Zend_Db::BIGINT_TYPE,
|
|
Zend_Db::FLOAT_TYPE => Zend_Db::FLOAT_TYPE,
|
|
'INT' => Zend_Db::INT_TYPE,
|
|
'INTEGER' => Zend_Db::INT_TYPE,
|
|
'MEDIUMINT' => Zend_Db::INT_TYPE,
|
|
'SMALLINT' => Zend_Db::INT_TYPE,
|
|
'TINYINT' => Zend_Db::INT_TYPE,
|
|
'BIGINT' => Zend_Db::BIGINT_TYPE,
|
|
'SERIAL' => Zend_Db::BIGINT_TYPE,
|
|
'DEC' => Zend_Db::FLOAT_TYPE,
|
|
'DECIMAL' => Zend_Db::FLOAT_TYPE,
|
|
'DOUBLE' => Zend_Db::FLOAT_TYPE,
|
|
'DOUBLE PRECISION' => Zend_Db::FLOAT_TYPE,
|
|
'FIXED' => Zend_Db::FLOAT_TYPE,
|
|
'FLOAT' => Zend_Db::FLOAT_TYPE
|
|
);
|
|
|
|
/**
|
|
* Creates a PDO object and connects to the database.
|
|
*
|
|
* @return void
|
|
* @throws Zend_Db_Adapter_Exception
|
|
*/
|
|
protected function _connect()
|
|
{
|
|
if ($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;
|
|
}
|
|
|
|
}
|