<?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.doctrine-project.org>.

 */

namespace Doctrine\ORM\Query\Expr;

/**

 * Expression class for DQL from

 *

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

 * @link    www.doctrine-project.org

 * @since   2.0

 * @version $Revision$

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

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

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

 */

class Join

{

    const INNER_JOIN = 'INNER';

    const LEFT_JOIN  = 'LEFT';

    const ON   = 'ON';

    const WITH = 'WITH';

    private $_joinType;

    private $_join;

    private $_alias;

    private $_conditionType;

    private $_condition;

    private $_indexBy;

    public function __construct($joinType, $join, $alias = null, $conditionType = null, $condition = null, $indexBy = null)

    {

        $this->_joinType       = $joinType;

        $this->_join           = $join;

        $this->_alias          = $alias;

        $this->_conditionType  = $conditionType;

        $this->_condition      = $condition;

        $this->_indexBy        = $indexBy;

    }

    public function __toString()

    {

        return strtoupper($this->_joinType) . ' JOIN ' . $this->_join

             . ($this->_alias ? ' ' . $this->_alias : '')

             . ($this->_condition ? ' ' . strtoupper($this->_conditionType) . ' ' . $this->_condition : '')

             . ($this->_indexBy ? ' INDEX BY ' . $this->_indexBy : '');

    }

}