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File: EntityReadInterface.php
<?php
/**
 * @file classes/services/interfaces/EntityReadInterface.php
 *
 * Copyright (c) 2014-2021 Simon Fraser University
 * Copyright (c) 2000-2021 John Willinsky
 * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
 *
 * @class EntityReadInterface
 *
 * @ingroup services_interfaces
 *
 * @brief An interface describing the methods a service class will implement to
 *  get one object or a collection of objects.
 */

namespace PKP\services\interfaces;
use Illuminate\Database\Query\Builder;

interface EntityReadInterface
{
    /**
     * Get one object of the entity type by its ID
     *
     * @param int $id
     *
     * @return object
     */
    public function get($id);

    /**
     * Get a count of the number of objects matching $args
     *
     * @param array $args Assoc array describing which rows should be counted
     *
     * @return int
     */
    public function getCount($args = []);

    /**
     * Get a list of ids matching $args
     *
     * @param array $args Assoc array describing which ids should be retrieved
     *
     * @return array
     */
    public function getIds($args = []);

    /**
     * Get a collection of objects limited, filtered and sorted by $args
     *
     * @param array $args Assoc array describing which objects should be retrieved
     *
     * @return \Iterator
     */
    public function getMany($args = []);

    /**
     * Get the max count of objects matching $args
     *
     * This method is identical to `self::getCount()` except that any pagination
     * arguments such as `count` or `offset` will be ignored.
     *
     * Usually, this is used with `self::getMany()` to return the total number of
     * items available according to the selection criteria.
     *
     * @param array $args Assoc array describing which objects should be counted
     *
     * @return int
     */
    public function getMax($args = []);

    /**
     * Get a QueryBuilder for this entity configured
     * according to the $args passed
     *
     * @param array $args Assoc array describing how the querybuilder should be
     * configured.
     *
     * @return Builder
     */
    public function getQueryBuilder($args = []);
}