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<?php
/*
* $Id: Mysql.php 10831 2013-05-29 19:32:17Z btowles $
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.doctrine-project.org>.
*/
/**
* Doctrine_Connection_Mysql
*
* @package Doctrine
* @subpackage Connection
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
* @author Lukas Smith <smith@pooteeweet.org> (PEAR MDB2 library)
* @version $Revision: 7490 $
* @link www.doctrine-project.org
* @since 1.0
*/
class Doctrine_Connection_Mysql extends Doctrine_Connection_Common
{
/**
* @var string $driverName the name of this connection driver
*/
protected $driverName = 'Mysql';
/**
* the constructor
*
* @param Doctrine_Manager $manager
* @param PDO|Doctrine_Adapter $adapter database handler
*/
public function __construct(Doctrine_Manager $manager, $adapter)
{
$this->setAttribute(Doctrine_Core::ATTR_DEFAULT_TABLE_TYPE, 'INNODB');
$this->supported = array(
'sequences' => 'emulated',
'indexes' => true,
'affected_rows' => true,
'transactions' => true,
'savepoints' => false,
'summary_functions' => true,
'order_by_text' => true,
'current_id' => 'emulated',
'limit_queries' => true,
'LOBs' => true,
'replace' => true,
'sub_selects' => true,
'auto_increment' => true,
'primary_key' => true,
'result_introspection' => true,
'prepared_statements' => 'emulated',
'identifier_quoting' => true,
'pattern_escaping' => true
);
$this->properties['string_quoting'] = array('start' => "'",
'end' => "'",
'escape' => '\\',
'escape_pattern' => '\\');
$this->properties['identifier_quoting'] = array('start' => '`',
'end' => '`',
'escape' => '`');
$this->properties['sql_comments'] = array(
array('start' => '-- ', 'end' => "\n", 'escape' => false),
array('start' => '#', 'end' => "\n", 'escape' => false),
array('start' => '/*', 'end' => '*/', 'escape' => false),
);
$this->properties['varchar_max_length'] = 255;
parent::__construct($manager, $adapter);
}
/**
* Overrides connect Method, to add specific attributes
* PDO emulate prepares is required to avoid bugs on mysql < 5.1
* when trying to prepare DROP DATABASE or CREATE DATABASE statements
*
* @see Doctrine_Connection :: connect();
* @return boolean connected
*/
public function connect()
{
$connected = parent::connect();
$this->setAttribute(PDO::ATTR_EMULATE_PREPARES, true);
return $connected;
}
/**
* returns the name of the connected database
*
* @return string
*/
public function getDatabaseName()
{
return $this->fetchOne('SELECT DATABASE()');
}
/**
* Set the charset on the current connection
*
* @param string charset
*/
public function setCharset($charset)
{
$query = 'SET NAMES ' . $this->quote($charset);
$this->exec($query);
parent::setCharset($charset);
}
/**
* Execute a SQL REPLACE query. A REPLACE query is identical to a INSERT
* query, except that if there is already a row in the table with the same
* key field values, the REPLACE query just updates its values instead of
* inserting a new row.
*
* The REPLACE type of query does not make part of the SQL standards. Since
* practically only MySQL implements it natively, this type of query is
* emulated through this method for other DBMS using standard types of
* queries inside a transaction to assure the atomicity of the operation.
*
* @access public
*
* @param string $table name of the table on which the REPLACE query will
* be executed.
* @param array $fields associative array that describes the fields and the
* values that will be inserted or updated in the specified table. The
* indexes of the array are the names of all the fields of the table. The
* values of the array are also associative arrays that describe the
* values and other properties of the table fields.
*
* Here follows a list of field properties that need to be specified:
*
* value:
* Value to be assigned to the specified field. This value may be
* of specified in database independent type format as this
* function can perform the necessary datatype conversions.
*
* Default:
* this property is required unless the Null property
* is set to 1.
*
* type
* Name of the type of the field. Currently, all types Metabase
* are supported except for clob and blob.
*
* Default: no type conversion
*
* null
* Boolean property that indicates that the value for this field
* should be set to null.
*
* The default value for fields missing in INSERT queries may be
* specified the definition of a table. Often, the default value
* is already null, but since the REPLACE may be emulated using
* an UPDATE query, make sure that all fields of the table are
* listed in this function argument array.
*
* Default: 0
*
* key
* Boolean property that indicates that this field should be
* handled as a primary key or at least as part of the compound
* unique index of the table that will determine the row that will
* updated if it exists or inserted a new row otherwise.
*
* This function will fail if no key field is specified or if the
* value of a key field is set to null because fields that are
* part of unique index they may not be null.
*
* Default: 0
*
* @return integer the number of affected rows
*/
public function replace(Doctrine_Table $table, array $fields, array $keys)
{
if (empty($keys)) {
throw new Doctrine_Connection_Exception('Not specified which fields are keys');
}
$columns = array();
$values = array();
$params = array();
foreach ($fields as $fieldName => $value) {
$columns[] = $table->getColumnName($fieldName);
$values[] = '?';
$params[] = $value;
}
$query = 'REPLACE INTO ' . $this->quoteIdentifier($table->getTableName()) . ' (' . implode(',', $columns) . ') VALUES (' . implode(',', $values) . ')';
return $this->exec($query, $params);
}
}