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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @copyright Copyright (C) eZ Systems AS. All rights reserved.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license For full copyright and license information view LICENSE file distributed with this source code.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace eZ\Bundle\EzPublishCoreBundle\Command;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\DBAL\Connection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Exception;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use eZ\Publish\API\Repository\Repository;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use eZ\Publish\API\Repository\Values\Content\VersionInfo;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use eZ\Publish\Core\Base\Exceptions\InvalidArgumentException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use eZ\Publish\Core\MVC\ConfigResolverInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use PDO;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Console\Command\Command;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Console\Input\InputInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Console\Input\InputOption;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Console\Output\Output;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Console\Output\OutputInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class CleanupVersionsCommand extends Command  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const DEFAULT_REPOSITORY_USER = 'admin';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const VERSION_DRAFT = 'draft';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const VERSION_ARCHIVED = 'archived';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const VERSION_PUBLISHED = 'published';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const VERSION_ALL = 'all';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const VERSION_STATUS = [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::VERSION_DRAFT => VersionInfo::STATUS_DRAFT,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::VERSION_ARCHIVED => VersionInfo::STATUS_ARCHIVED,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::VERSION_PUBLISHED => VersionInfo::STATUS_PUBLISHED,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var \eZ\Publish\API\Repository\Repository  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $repository;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var \eZ\Publish\Core\MVC\ConfigResolverInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $configResolver;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var \Doctrine\DBAL\Driver\Connection  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $connection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        Repository $repository,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ConfigResolverInterface $configResolver,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        Connection $connection  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->repository = $repository;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->configResolver = $configResolver;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->connection = $connection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        parent::__construct();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function configure()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->setName('ezplatform:content:cleanup-versions') | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->setDescription('Remove unwanted content versions. It keeps published version untouched. By default, it keeps also the last archived/draft version.') | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->addOption(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'status',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                't',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                InputOption::VALUE_OPTIONAL,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                sprintf(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    "Select which version types should be removed: '%s', '%s', '%s'.",  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    self::VERSION_DRAFT,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    self::VERSION_ARCHIVED,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    self::VERSION_ALL  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                self::VERSION_ALL  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->addOption(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'keep',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'k',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                InputOption::VALUE_OPTIONAL,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                "Sets number of the most recent versions (both drafts and archived) which won't be removed.",  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'config_default'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->addOption(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'user',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'u',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                InputOption::VALUE_OPTIONAL,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'eZ Platform username (with Role containing at least Content policies: remove, read, versionread)',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                self::DEFAULT_REPOSITORY_USER  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function execute(InputInterface $input, OutputInterface $output)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        // We don't load repo services or config resolver before execute() to avoid loading before SiteAccess is set.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $keep = $input->getOption('keep'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($keep === 'config_default') { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $keep = $this->configResolver->getParameter('options.default_version_archive_limit'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (($keep = (int) $keep) < 0) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new InvalidArgumentException(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'keep',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'Keep value can not be negative.'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $userService = $this->repository->getUserService();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $contentService = $this->repository->getContentService();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $permissionResolver = $this->repository->getPermissionResolver();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $permissionResolver->setCurrentUserReference(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $userService->loadUserByLogin($input->getOption('user')) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $status = $input->getOption('status'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $contentIds = $this->getObjectsIds($keep, $status);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $contentIdsCount = count($contentIds);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($contentIdsCount === 0) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $output->writeln('<info>There is no Content matching given criteria.</info>'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $output->writeln(sprintf(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            '<info>Found %d Content IDs matching given criteria.</info>',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $contentIdsCount  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    135
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                        $removedVersionsCounter = 0;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    137
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    138
                 | 
                                    
                                                     | 
                
                 | 
                        $removeAll = $status === self::VERSION_ALL;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    139
                 | 
                                    
                                                     | 
                
                 | 
                        $removeDrafts = $status === self::VERSION_DRAFT;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    140
                 | 
                                    
                                                     | 
                
                 | 
                        $removeArchived = $status === self::VERSION_ARCHIVED;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    141
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    142
                 | 
                                    
                                                     | 
                
                 | 
                        foreach ($contentIds as $contentId) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    143
                 | 
                                    
                                                     | 
                
                 | 
                            try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    144
                 | 
                                    
                                                     | 
                
                 | 
                                $contentInfo = $contentService->loadContentInfo((int) $contentId);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    145
                 | 
                                    
                                                     | 
                
                 | 
                                $versions = $contentService->loadVersions($contentInfo);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    146
                 | 
                                    
                                                     | 
                
                 | 
                                $versionsCount = count($versions);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    147
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    148
                 | 
                                    
                                                     | 
                
                 | 
                                $output->writeln(sprintf(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    149
                 | 
                                    
                                                     | 
                
                 | 
                                    '<info>Content %d has %d version(s)</info>',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    150
                 | 
                                    
                                                     | 
                
                 | 
                                    (int) $contentId,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    151
                 | 
                                    
                                                     | 
                
                 | 
                                    $versionsCount  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    152
                 | 
                                    
                                                     | 
                
                 | 
                                ), Output::VERBOSITY_VERBOSE);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    153
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    154
                 | 
                                    
                                                     | 
                
                 | 
                                $versions = array_filter($versions, function ($version) use ($removeAll, $removeDrafts, $removeArchived) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    155
                 | 
                                    
                                                     | 
                
                 | 
                                    if (  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    156
                 | 
                                    
                                                     | 
                
                 | 
                                        ($removeAll && $version->status !== VersionInfo::STATUS_PUBLISHED) ||  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    157
                 | 
                                    
                                                     | 
                
                 | 
                                        ($removeDrafts && $version->status === VersionInfo::STATUS_DRAFT) ||  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    158
                 | 
                                    
                                                     | 
                
                 | 
                                        ($removeArchived && $version->status === VersionInfo::STATUS_ARCHIVED)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    159
                 | 
                                    
                                                     | 
                
                 | 
                                    ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    160
                 | 
                                    
                                                     | 
                
                 | 
                                        return $version;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    161
                 | 
                                    
                                                     | 
                
                 | 
                                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    162
                 | 
                                    
                                                     | 
                
                 | 
                                });  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    163
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    164
                 | 
                                    
                                                     | 
                
                 | 
                                if ($keep > 0) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    165
                 | 
                                    
                                                     | 
                
                 | 
                                    $versions = array_slice($versions, 0, -$keep);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    166
                 | 
                                    
                                                     | 
                
                 | 
                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    167
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    168
                 | 
                                    
                                                     | 
                
                 | 
                                $output->writeln(sprintf(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    169
                 | 
                                    
                                                     | 
                
                 | 
                                    "Found %d content's (%d) version(s) to remove.",  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    170
                 | 
                                    
                                                     | 
                
                 | 
                                    count($versions),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    171
                 | 
                                    
                                                     | 
                
                 | 
                                    (int) $contentId  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    172
                 | 
                                    
                                                     | 
                
                 | 
                                ), Output::VERBOSITY_VERBOSE);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    173
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    174
                 | 
                                    
                                                     | 
                
                 | 
                                /** @var \eZ\Publish\API\Repository\Values\Content\VersionInfo $version */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    175
                 | 
                                    
                                                     | 
                
                 | 
                                foreach ($versions as $version) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    176
                 | 
                                    
                                                     | 
                
                 | 
                                    $contentService->deleteVersion($version);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    177
                 | 
                                    
                                                     | 
                
                 | 
                                    ++$removedVersionsCounter;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    178
                 | 
                                    
                                                     | 
                
                 | 
                                    $output->writeln(sprintf(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    179
                 | 
                                    
                                                     | 
                
                 | 
                                        "Content's (%d) version (%d) has been deleted.",  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    180
                 | 
                                    
                                                     | 
                
                 | 
                                        $contentInfo->id,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    181
                 | 
                                    
                                                     | 
                
                 | 
                                        $version->id  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    182
                 | 
                                    
                                                     | 
                
                 | 
                                    ), Output::VERBOSITY_VERBOSE);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    183
                 | 
                                    
                                                     | 
                
                 | 
                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    184
                 | 
                                    
                                                     | 
                
                 | 
                            } catch (Exception $e) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    185
                 | 
                                    
                                                     | 
                
                 | 
                                $output->writeln(sprintf(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    186
                 | 
                                    
                                                     | 
                
                 | 
                                    '<error>%s</error>',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    187
                 | 
                                    
                                                     | 
                
                 | 
                                    $e->getMessage()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    188
                 | 
                                    
                                                     | 
                
                 | 
                                ));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    189
                 | 
                                    
                                                     | 
                
                 | 
                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    190
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    191
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    192
                 | 
                                    
                                                     | 
                
                 | 
                        $output->writeln(sprintf(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    193
                 | 
                                    
                                                     | 
                
                 | 
                            '<info>Removed %d unwanted contents version(s).</info>',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    194
                 | 
                                    
                                                     | 
                
                 | 
                            $removedVersionsCounter  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    195
                 | 
                                    
                                                     | 
                
                 | 
                        ));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    196
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    197
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    198
                 | 
                                    
                                                     | 
                
                 | 
                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    199
                 | 
                                    
                                                     | 
                
                 | 
                     * @param int $keep  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    200
                 | 
                                    
                                                     | 
                
                 | 
                     * @param string $status  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    201
                 | 
                                    
                                                     | 
                
                 | 
                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    202
                 | 
                                    
                                                     | 
                
                 | 
                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    203
                 | 
                                    
                                                     | 
                
                 | 
                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    204
                 | 
                                    
                                                     | 
                
                 | 
                     * @throws \eZ\Publish\Core\Base\Exceptions\InvalidArgumentException  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    205
                 | 
                                    
                                                     | 
                
                 | 
                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    206
                 | 
                                    
                                                     | 
                
                 | 
                    protected function getObjectsIds($keep, $status)  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    207
                 | 
                                    
                                                     | 
                
                 | 
                    { | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    208
                 | 
                                    
                                                     | 
                
                 | 
                        $query = $this->connection->createQueryBuilder()  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                        
                            
            
                                    
            
            
                | 
                    209
                 | 
                                    
                                                     | 
                
                 | 
                                ->select('c.id') | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    210
                 | 
                                    
                                                     | 
                
                 | 
                                ->from('ezcontentobject', 'c') | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    211
                 | 
                                    
                                                     | 
                
                 | 
                                ->join('c', 'ezcontentobject_version', 'v', 'v.contentobject_id = c.id') | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    212
                 | 
                                    
                                                     | 
                
                 | 
                                ->groupBy('c.id', 'v.status') | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    213
                 | 
                                    
                                                     | 
                
                 | 
                                ->having('count(c.id) > :keep'); | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    214
                 | 
                                    
                                                     | 
                
                 | 
                        $query->setParameter('keep', $keep); | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    215
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    216
                 | 
                                    
                                                     | 
                
                 | 
                        if ($status !== self::VERSION_ALL) { | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    217
                 | 
                                    
                                                     | 
                
                 | 
                            $query->where('v.status = :status'); | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    218
                 | 
                                    
                                                     | 
                
                 | 
                            $query->setParameter('status', $this->mapStatusToVersionInfoStatus($status)); | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    219
                 | 
                                    
                                                     | 
                
                 | 
                        } else { | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    220
                 | 
                                    
                                                     | 
                
                 | 
                            $query->andWhere('v.status != :status'); | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    221
                 | 
                                    
                                                     | 
                
                 | 
                            $query->setParameter('status', $this->mapStatusToVersionInfoStatus(self::VERSION_PUBLISHED)); | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    222
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    223
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    224
                 | 
                                    
                                                     | 
                
                 | 
                        $stmt = $query->execute();  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    225
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    226
                 | 
                                    
                                                     | 
                
                 | 
                        return $stmt->fetchAll(PDO::FETCH_COLUMN);  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    227
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    228
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    229
                 | 
                                    
                                                     | 
                
                 | 
                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    230
                 | 
                                    
                                                     | 
                
                 | 
                     * @param string $status  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    231
                 | 
                                    
                                                     | 
                
                 | 
                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    232
                 | 
                                    
                                                     | 
                
                 | 
                     * @return int  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    233
                 | 
                                    
                                                     | 
                
                 | 
                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    234
                 | 
                                    
                                                     | 
                
                 | 
                     * @throws \eZ\Publish\Core\Base\Exceptions\InvalidArgumentException  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    235
                 | 
                                    
                                                     | 
                
                 | 
                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    236
                 | 
                                    
                                                     | 
                
                 | 
                    private function mapStatusToVersionInfoStatus($status)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    237
                 | 
                                    
                                                     | 
                
                 | 
                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    238
                 | 
                                    
                                                     | 
                
                 | 
                        if (array_key_exists($status, self::VERSION_STATUS)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    239
                 | 
                                    
                                                     | 
                
                 | 
                            return self::VERSION_STATUS[$status];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    240
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    241
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    242
                 | 
                                    
                                                     | 
                
                 | 
                        throw new InvalidArgumentException(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    243
                 | 
                                    
                                                     | 
                
                 | 
                            'status',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    244
                 | 
                                    
                                                     | 
                
                 | 
                            sprintf(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    245
                 | 
                                    
                                                     | 
                
                 | 
                                "Status %s can't be mapped to VersionInfo status.",  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    246
                 | 
                                    
                                                     | 
                
                 | 
                                $status  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    247
                 | 
                                    
                                                     | 
                
                 | 
                            )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    248
                 | 
                                    
                                                     | 
                
                 | 
                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    249
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    250
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    251
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                        
Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the interface: