vendor/doctrine/orm/lib/Doctrine/ORM/Query/QueryExpressionVisitor.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;

use Doctrine\Common\Collections\ArrayCollection;

use Doctrine\Common\Collections\Expr\ExpressionVisitor;
use Doctrine\Common\Collections\Expr\Comparison;
use Doctrine\Common\Collections\Expr\CompositeExpression;
use Doctrine\Common\Collections\Expr\Value;

use Doctrine\ORM\QueryBuilder;
use Doctrine\ORM\Query\Parameter;

/**
 * Converts Collection expressions to Query expressions.
 *
 * @author Kirill chEbba Chebunin <iam@chebba.org>
 * @since 2.4
 */
class QueryExpressionVisitor extends ExpressionVisitor
{
    /**
     * @var array
     */
    private static $operatorMap = array(
        Comparison::GT => Expr\Comparison::GT,
        Comparison::GTE => Expr\Comparison::GTE,
        Comparison::LT  => Expr\Comparison::LT,
        Comparison::LTE => Expr\Comparison::LTE
    );

    /**
     * @var string
     */
    private $rootAlias;

    /**
     * @var Expr
     */
    private $expr;

    /**