vendor/doctrine/orm/lib/Doctrine/ORM/Query/Expr.php

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<?php
/*
 * 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 MIT license. For more information, see
 * <http://www.doctrine-project.org>.
 */

namespace Doctrine\ORM\Query;

/**
 * This class is used to generate DQL expressions via a set of PHP static functions.

 * @link    www.doctrine-project.org
 * @since   2.0
 * @author  Guilherme Blanco <guilhermeblanco@hotmail.com>
 * @author  Jonathan Wage <jonwage@gmail.com>
 * @author  Roman Borschel <roman@code-factory.org>
 * @author  Benjamin Eberlei <kontakt@beberlei.de>
 * @todo Rename: ExpressionBuilder
 */
class Expr
{
    /**
     * Creates a conjunction of the given boolean expressions.
     *
     * Example:
     *
     *     [php]
     *     // (u.type = ?1) AND (u.role = ?2)
     *     $expr->andX($expr->eq('u.type', ':1'), $expr->eq('u.role', ':2'));
     *
     * @param \Doctrine\ORM\Query\Expr\Comparison |
     *        \Doctrine\ORM\Query\Expr\Func |
     *        \Doctrine\ORM\Query\Expr\Orx
     *        $x Optional clause. Defaults to null, but requires at least one defined when converting to string.
     *
     * @return Expr\Andx
     */
    public function andX($x = null)
    {
        return new Expr\Andx(func_get_args());
    }

    /**
     * Creates a disjunction of the given boolean expressions.
     *
     * Example:
     *