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typo3/sysext/install/Classes/Updates/FillTranslationSourceField.php

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+<?php
+namespace TYPO3\CMS\Install\Updates;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+use TYPO3\CMS\Core\Database\ConnectionPool;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
+/**
+ * Fill translation source field (l10n_source)
+ * @internal This class is only meant to be used within EXT:install and is not part of the TYPO3 Core API.
+ */
+class FillTranslationSourceField implements UpgradeWizardInterface
+{
+    /**
+     * @return string Unique identifier of this updater
+     */
+    public function getIdentifier(): string
+    {
+        return 'fillTranslationSourceField';
+    }
+
+    /**
+     * @return string Title of this updater
+     */
+    public function getTitle(): string
+    {
+        return 'Fill translation source field (l10n_source)';
+    }
+
+    /**
+     * @return string Longer description of this updater
+     */
+    public function getDescription(): string
+    {
+        return 'Fill translation source field (l10n_source) for tt_contents which have l18n_parent set.';
+    }
+
+    /**
+     * Checks if an update is needed
+     *
+     * @return bool Whether an update is needed (TRUE) or not (FALSE)
+     */
+    public function updateNecessary(): bool
+    {
+        $connection = GeneralUtility::makeInstance(ConnectionPool::class)
+            ->getConnectionForTable('tt_content');
+        $queryBuilder = $connection->createQueryBuilder();
+        $queryBuilder->getRestrictions()->removeAll();
+        $query = $queryBuilder->count('uid')
+            ->from('tt_content')
+            ->where($queryBuilder->expr()->andX(
+                $queryBuilder->expr()->gt('l18n_parent', $queryBuilder->createNamedParameter(0)),
+                $queryBuilder->expr()->eq('l10n_source', $queryBuilder->createNamedParameter(0))
+            ));
+        return (bool)$query->execute()->fetchColumn(0);
+    }
+
+    /**
+     * @return string[] All new fields and tables must exist
+     */
+    public function getPrerequisites(): array
+    {
+        return [
+            DatabaseUpdatedPrerequisite::class
+        ];
+    }
+
+    /**
+     * Performs the database update
+     *
+     * @return bool
+     */
+    public function executeUpdate(): bool
+    {
+        $connection = GeneralUtility::makeInstance(ConnectionPool::class)
+            ->getConnectionForTable('tt_content');
+        $queryBuilder = $connection->createQueryBuilder();
+        $queryBuilder->getRestrictions()->removeAll();
+        $queryBuilder->update('tt_content', 't')
+            ->set('t.l10n_source', 't.l18n_parent', false)
+            ->where($queryBuilder->expr()->andX(
+                $queryBuilder->expr()->gt('t.l18n_parent', $queryBuilder->createNamedParameter(0)),
+                $queryBuilder->expr()->eq('t.l10n_source', $queryBuilder->createNamedParameter(0))
+            ))
+            ->execute();
+        return true;
+    }
+}