<?php
namespace TYPO3\CMS\Extbase\Persistence\Generic\Qom;

/**
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */
/**
 * Performs a logical negation of another constraint.
 *
 * To satisfy the Not constraint, the node-tuple must not satisfy constraint.
 */
class LogicalNot implements NotInterface {

	/**
	 * @var ConstraintInterface
	 */
	protected $constraint;

	/**
	 * @param ConstraintInterface $constraint
	 */
	public function __construct(ConstraintInterface $constraint) {
		$this->constraint = $constraint;
	}

	/**
	 * Fills an array with the names of all bound variables in the constraint
	 *
	 * @param array &$boundVariables
	 * @return void
	 */
	public function collectBoundVariableNames(&$boundVariables) {
		$this->constraint->collectBoundVariableNames($boundVariables);
	}

	/**
	 * Gets the constraint negated by this Not constraint.
	 *
	 * @return ConstraintInterface the constraint; non-null
	 */
	public function getConstraint() {
		return $this->constraint;
	}
}
