FileDeletionAspect.php

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<?php
namespace TYPO3\CMS\Core\Resource\Processing;

use TYPO3\CMS\Core\Resource\File;
use TYPO3\CMS\Core\Resource\ProcessedFile;
use TYPO3\CMS\Core\Resource\FileInterface;
use TYPO3\CMS\Core\Utility\GeneralUtility;

class FileDeletionAspect {

    protected function getFileIndexRepository() {
        return GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Resource\\Index\\FileIndexRepository');
    }

    protected function getMetaDataRepository() {
        return GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Resource\\Index\\MetaDataRepository');
    }

    protected function getProcessedFileRepository() {
        return GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Resource\\ProcessedFileRepository');
    }

    protected function getDatabaseConnection() {
        return $GLOBALS['TYPO3_DB'];
    }

    public function removeFromRepository(FileInterface $fileObject) {
        // remove file from repository
        if ($fileObject instanceof File) {
            $this->cleanupProcessedFiles($fileObject);
            $this->cleanupCategoryReferences($fileObject);
            $this->getFileIndexRepository()->remove($fileObject->getUid());
            $this->getMetaDataRepository()->removeByFileUid($fileObject->getUid());

            // remove all references
            $this->getDatabaseConnection()->exec_DELETEquery(
                'sys_file_reference',
                'uid_local=' . (int)$fileObject->getUid() . ' AND table_local = \'sys_file\''
            );

        } elseif ($fileObject instanceof ProcessedFile) {
            $this->getDatabaseConnection()->exec_DELETEquery('sys_file_processedfile', 'uid=' . (int)$fileObject->getUid());
        }
    }

    public function cleanupProcessedFilesPostFileAdd(FileInterface $file, $targetFolder) {
        $this->cleanupProcessedFiles($file);
    }

    public function cleanupProcessedFilesPostFileReplace(FileInterface $file, $localFilePath) {
        $this->cleanupProcessedFiles($file);
    }

    protected function cleanupCategoryReferences(File $fileObject) {

        // Retrieve the file metadata uid which is different from the file uid.
        $metadataProperties = $fileObject->_getMetaData();

        $metaDataUid = isset($metadataProperties['_ORIG_uid']) ? $metadataProperties['_ORIG_uid'] : $metadataProperties['uid'];
        $this->getDatabaseConnection()->exec_DELETEquery(
            'sys_category_record_mm',
            'uid_foreign=' . (int)$metaDataUid . ' AND tablenames = \'sys_file_metadata\''
        );
    }

    protected function cleanupProcessedFiles(FileInterface $fileObject) {

        // only delete processed files of File objects
        if (!$fileObject instanceof File) {
            return;
        }

        foreach ($this->getProcessedFileRepository()->findAllByOriginalFile($fileObject) as $processedFile) {
            if ($processedFile->exists()) {
                $processedFile->delete(TRUE);
            }
            $this->removeFromRepository($processedFile);
        }
    }
}