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<?php declare(strict_types = 1);
/*
 * Copyright (c) 2019, Josef Kufner  <josef@kufner.cz>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
namespace Smalldb\StateMachine\DoctrineExtension\ReferenceDataSource;
use Doctrine\ORM\EntityRepository;
use Smalldb\StateMachine\Provider\SmalldbProviderInterface;
use Smalldb\StateMachine\ReferenceDataSource\ReferenceDataSourceInterface;
use Smalldb\StateMachine\ReferenceInterface;
use Smalldb\StateMachine\Smalldb;
class DataSource implements ReferenceDataSourceInterface
{
    private Smalldb $smalldb;
    private SmalldbProviderInterface $machineProvider;
    private EntityRepository $repository;
    private string $refClass;
    public function __construct(Smalldb $smalldb, SmalldbProviderInterface $machineProvider, EntityRepository $repository)
    {
        $this->smalldb = $smalldb;
        $this->machineProvider = $machineProvider;
        $this->repository = $repository;
        $this->refClass = $this->machineProvider->getReferenceClass();
    }
    /**
     * Load data for the state machine and set the state
     */
    public function loadData($id): ?object
    {
        if ($id === null) {
            return null;
        }
        return $this->repository->find($id);
    }
    public function ref($id): ReferenceInterface
    {
        return new $this->refClass($this->smalldb, $this->machineProvider, $this, $id);
    }
    /**
     * Invalidate cached data
     */
    public function invalidateCache($id = null)
    {
        // No-op.
    }
}