<?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 join between two node-tuple sources.
 */
interface JoinInterface extends SourceInterface {

	/**
	 * Gets the left node-tuple source.
	 *
	 * @return SelectorInterface the left source; non-null
	 */
	public function getLeft();

	/**
	 * Gets the right node-tuple source.
	 *
	 * @return SelectorInterface the right source; non-null
	 */
	public function getRight();

	/**
	 * Gets the join type.
	 *
	 * @return string one of QueryObjectModelConstants.JCR_JOIN_TYPE_*
	 */
	public function getJoinType();

	/**
	 * Gets the join condition.
	 *
	 * @return JoinConditionInterface the join condition; non-null
	 */
	public function getJoinCondition();
}
