<?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\Cache;

/**
 * Defines entity collection roles to be stored in the cache region.
 *
 * @since   2.5
 * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
 */
class CollectionCacheKey extends CacheKey
{
    /**
     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
     *
     * @var array The owner entity identifier
     */
    public $ownerIdentifier;

    /**
     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
     *
     * @var string The owner entity class
     */
    public $entityClass;

    /**
     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
     *
     * @var string The association name
     */
    public $association;

    /**
     * @param string $entityClass     The entity class.
     * @param string $association     The field name that represents the association.
     * @param array  $ownerIdentifier The identifier of the owning entity.
     */
    public function __construct($entityClass, $association, array $ownerIdentifier)
    {
        ksort($ownerIdentifier);

        $this->ownerIdentifier  = $ownerIdentifier;
        $this->entityClass      = (string) $entityClass;
        $this->association      = (string) $association;
        $this->hash             = str_replace('\\', '.', strtolower($entityClass)) . '_' . implode(' ', $ownerIdentifier) . '__' .  $association;
    }
}