1 <?php

     2 /*

     3  *  $Id$

     4  *

     5  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

     6  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

     7  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

     8  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

     9  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

    10  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

    11  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

    12  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

    13  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    14  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    15  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    16  *

    17  * This software consists of voluntary contributions made by many individuals

    18  * and is licensed under the LGPL. For more information, see

    19  * <http://www.doctrine-project.org>.

    20  */

    21 

    22 namespace Doctrine\ORM\Query\Expr;

    23 

    24 /**

    25  * Expression class for DQL math statements

    26  *

    27  * @license http://www.opensource.org/licenses/lgpl-license.php LGPL

    28  * @link    www.doctrine-project.org

    29  * @since   2.0

    30  * @version $Revision$

    31  * @author  Guilherme Blanco <guilhermeblanco@hotmail.com>

    32  * @author  Jonathan Wage <jonwage@gmail.com>

    33  * @author  Roman Borschel <roman@code-factory.org>

    34  */

    35 class Math

    36 {

    37     private $_leftExpr;

    38     private $_operator;

    39     private $_rightExpr;

    40 

    41     public function __construct($leftExpr, $operator, $rightExpr)

    42     {

    43         $this->_leftExpr  = $leftExpr;

    44         $this->_operator  = $operator;

    45         $this->_rightExpr = $rightExpr;

    46     }

    47 

    48     public function __toString()

    49     {

    50         // Adjusting Left Expression

    51         $leftExpr = (string) $this->_leftExpr;

    52         

    53         if ($this->_leftExpr instanceof Math) {

    54             $leftExpr = '(' . $leftExpr . ')';

    55         }

    56         

    57         // Adjusting Right Expression

    58         $rightExpr = (string) $this->_rightExpr;

    59         

    60         if ($this->_rightExpr instanceof Math) {

    61             $rightExpr = '(' . $rightExpr . ')';

    62         }

    63     

    64         return $leftExpr . ' ' . $this->_operator . ' ' . $rightExpr;

    65     }

    66 }