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

namespace Doctrine\Common\Persistence;

/**
 * Contract for a Doctrine persistence layer ObjectRepository class to implement.
 *
 * @license http://www.opensource.org/licenses/lgpl-license.php LGPL
 * @link    www.doctrine-project.org
 * @since   2.1
 * @author  Benjamin Eberlei <kontakt@beberlei.de>
 * @author  Jonathan Wage <jonwage@gmail.com>
 */
interface ObjectRepository
{
    /**
     * Finds an object by its primary key / identifier.
     *
     * @param $id The identifier.
     * @return object The object.
     */
    public function find($id);

    /**
     * Finds all objects in the repository.
     *
     * @return mixed The objects.
     */
    public function findAll();

    /**
     * Finds objects by a set of criteria.
     *
     * Optionally sorting and limiting details can be passed. An implementation may throw
     * an UnexpectedValueException if certain values of the sorting or limiting details are
     * not supported.
     *
     * @throws UnexpectedValueException
     * @param array $criteria
     * @param array|null $orderBy
     * @param int|null $limit
     * @param int|null $offset
     * @return mixed The objects.
     */
    public function findBy(array $criteria, array $orderBy = null, $limit = null, $offset = null);

    /**
     * Finds a single object by a set of criteria.
     *
     * @param array $criteria
     * @return object The object.
     */
    public function findOneBy(array $criteria);
}