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

/***************************************************************
 *  Copyright notice
 *
 *  This class is a backport of the corresponding class of TYPO3 Flow.
 *  All credits go to the TYPO3 Flow team.
 *  All rights reserved
 *
 *  This script is part of the TYPO3 project. The TYPO3 project is
 *  free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  The GNU General Public License can be found at
 *  http://www.gnu.org/copyleft/gpl.html.
 *  A copy is found in the textfile GPL.txt and important notices to the license
 *  from the author is found in LICENSE.txt distributed with these scripts.
 *
 *
 *  This script is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  This copyright notice MUST APPEAR in all copies of the script!
 ***************************************************************/
/**
 * Tests whether the value of a property in a first selector is equal to the value of a
 * property in a second selector.
 * A node-tuple satisfies the constraint only if: the selector1Name node has a property named property1Name, and
 * the selector2Name node has a property named property2Name, and
 * the value of property property1Name is equal to the value of property property2Name.
 */
class EquiJoinCondition implements \TYPO3\CMS\Extbase\Persistence\Generic\Qom\JoinConditionInterface {

	/**
	 * @var string
	 */
	protected $selector1Name;

	/**
	 * @var string
	 */
	protected $property1Name;

	/**
	 * @var string
	 */
	protected $selector2Name;

	/**
	 * @var string
	 */
	protected $property2Name;

	/**
	 * Constructs this EquiJoinCondition instance
	 *
	 * @param string $selector1Name the name of the first selector; non-null
	 * @param string $property1Name the property name in the first selector; non-null
	 * @param string $selector2Name the name of the second selector; non-null
	 * @param string $property2Name the property name in the second selector; non-null
	 */
	public function __construct($selector1Name, $property1Name, $selector2Name, $property2Name) {
		// TODO Test for selector1Name = selector2Name -> exception
		$this->selector1Name = $selector1Name;
		$this->property1Name = $property1Name;
		$this->selector2Name = $selector2Name;
		$this->property2Name = $property2Name;
	}

	/**
	 * Gets the name of the first selector.
	 *
	 * @return string the selector name; non-null
	 */
	public function getSelector1Name() {
		return $this->selector1Name;
	}

	/**
	 * Gets the name of the first property.
	 *
	 * @return string the property name; non-null
	 */
	public function getProperty1Name() {
		return $this->property1Name;
	}

	/**
	 * Gets the name of the second selector.
	 *
	 * @return string the selector name; non-null
	 */
	public function getSelector2Name() {
		return $this->selector2Name;
	}

	/**
	 * Gets the name of the second property.
	 *
	 * @return string the property name; non-null
	 */
	public function getProperty2Name() {
		return $this->property2Name;
	}
}

?>