<?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\Common\Persistence\Event;

use Doctrine\Common\EventArgs;
use Doctrine\Common\Persistence\ObjectManager;

/**
 * Provides event arguments for the onClear event.
 *
 * @link   www.doctrine-project.org
 * @since  2.2
 * @author Roman Borschel <roman@code-factory.de>
 * @author Benjamin Eberlei <kontakt@beberlei.de>
 */
class OnClearEventArgs extends EventArgs
{
    /**
     * @var \Doctrine\Common\Persistence\ObjectManager
     */
    private $objectManager;

    /**
     * @var string|null
     */
    private $entityClass;

    /**
     * Constructor.
     *
     * @param ObjectManager $objectManager The object manager.
     * @param string|null   $entityClass   The optional entity class.
     */
    public function __construct($objectManager, $entityClass = null)
    {
        $this->objectManager = $objectManager;
        $this->entityClass = $entityClass;
    }

    /**
     * Retrieves the associated ObjectManager.
     *
     * @return \Doctrine\Common\Persistence\ObjectManager
     */
    public function getObjectManager()
    {
        return $this->objectManager;
    }

    /**
     * Returns the name of the entity class that is cleared, or null if all are cleared.
     *
     * @return string|null
     */
    public function getEntityClass()
    {
        return $this->entityClass;
    }

    /**
     * Returns whether this event clears all entities.
     *
     * @return bool
     */
    public function clearsAllEntities()
    {
        return ($this->entityClass === null);
    }
}