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doctrine2/lib/Doctrine/Expression/Mysql.php

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<?php
/*
* $Id$
*
* 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.phpdoctrine.com>.
*/
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Doctrine::autoload('Doctrine_Expression_Driver');
/**
* Doctrine_Expression_Mysql
*
* @package Doctrine
* @subpackage Expression
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.phpdoctrine.com
* @since 1.0
* @version $Revision$
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
*/
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class Doctrine_Expression_Mysql extends Doctrine_Expression_Driver
{
/**
* returns the regular expression operator
*
* @return string
*/
public function regexp()
{
return 'RLIKE';
}
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/**
* return string to call a function to get random value inside an SQL statement
*
* @return string to generate float between 0 and 1
*/
public function random()
{
return 'RAND()';
}
/**
* build a pattern matching string
*
* EXPERIMENTAL
*
* WARNING: this function is experimental and may change signature at
* any time until labelled as non-experimental
*
* @access public
*
* @param array $pattern even keys are strings, odd are patterns (% and _)
* @param string $operator optional pattern operator (LIKE, ILIKE and maybe others in the future)
* @param string $field optional field name that is being matched against
* (might be required when emulating ILIKE)
*
* @return string SQL pattern
*/
public function matchPattern($pattern, $operator = null, $field = null)
{
$match = '';
if ( ! is_null($operator)) {
$field = is_null($field) ? '' : $field.' ';
$operator = strtoupper($operator);
switch ($operator) {
// case insensitive
case 'ILIKE':
$match = $field.'LIKE ';
break;
// case sensitive
case 'LIKE':
$match = $field.'LIKE BINARY ';
break;
default:
throw new Doctrine_Expression_Mysql_Exception('not a supported operator type:'. $operator);
}
}
$match.= "'";
foreach ($pattern as $key => $value) {
if ($key % 2) {
$match .= $value;
} else {
$match .= $this->conn->escapePattern($this->conn->escape($value));
}
}
$match.= "'";
$match.= $this->patternEscapeString();
return $match;
}
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/**
* Returns global unique identifier
*
* @return string to get global unique identifier
*/
public function guid()
{
return 'UUID()';
}
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/**
* Returns a series of strings concatinated
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*
* concat() accepts an arbitrary number of parameters. Each parameter
* must contain an expression or an array with expressions.
*
* @param string|array(string) strings that will be concatinated.
*/
public function concat()
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{
$args = func_get_args();
return 'CONCAT(' . join(', ', (array) $args) . ')';
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}
}