<?php
/*
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 * "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 LGPL. For more information, see
 * <http://www.doctrine-project.org>.
 */

namespace Doctrine\Common\DataFixtures\Purger;

use Doctrine\ODM\PHPCR\DocumentManager;

/**
 * Class responsible for purging databases of data before reloading data fixtures.
 *
 * @author Daniel Barsotti <daniel.barsotti@liip.ch>
 */
class PHPCRPurger implements PurgerInterface
{
    /** DocumentManager instance used for persistence. */
    private $dm;

    /**
     * Construct new purger instance.
     *
     * @param DocumentManager $dm DocumentManager instance used for persistence.
     */
    public function __construct(DocumentManager $dm = null)
    {
        $this->dm = $dm;
    }

    /**
     * Set the DocumentManager instance this purger instance should use.
     *
     * @param DocumentManager $dm
     */
    public function setDocumentManager(DocumentManager $dm)
    {
        $this->dm = $dm;
    }

    /**
     * Delete all the nodes in the repository which are not prefixed with jcr:
     */
    public function purge()
    {
        $session = $this->dm->getPhpcrSession();
        foreach($session->getRootNode()->getNodes() as $node) {
            if (substr($node->getName(), 0, 4) !== 'jcr:') {
                $node->remove();
            }
        }
        $session->save();
    }

}
