1 files changed, 92 insertions, 0 deletions
diff --git a/lib/private/Files/Cache/CacheQueryBuilder.php b/lib/private/Files/Cache/CacheQueryBuilder.php
new file mode 100644
index 00000000000..a5ff2129de8
--- /dev/null
+++ b/lib/private/Files/Cache/CacheQueryBuilder.php
@@ -0,0 +1,92 @@
+<?php declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2019 Robin Appelman <robin@icewind.nl>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OC\Files\Cache;
+
+use OC\DB\QueryBuilder\QueryBuilder;
+use OC\SystemConfig;
+use OCP\DB\QueryBuilder\IQueryBuilder;
+use OCP\IDBConnection;
+use OCP\ILogger;
+
+/**
+ * Query builder with commonly used helpers for filecache queries
+ */
+class CacheQueryBuilder extends QueryBuilder {
+	private $cache;
+	private $alias = null;
+
+	public function __construct(IDBConnection $connection, SystemConfig $systemConfig, ILogger $logger, Cache $cache) {
+		parent::__construct($connection, $systemConfig, $logger);
+
+		$this->cache = $cache;
+	}
+
+	public function selectFileCache(string $alias = null) {
+		$name = $alias ? $alias : 'filecache';
+		$this->select("$name.fileid", 'storage', 'path', 'path_hash', "$name.parent", 'name', 'mimetype', 'mimepart', 'size', 'mtime',
+			'storage_mtime', 'encrypted', 'etag', 'permissions', 'checksum', 'metadata_etag', 'creation_time', 'upload_time')
+			->from('filecache', $name)
+			->leftJoin($name, 'filecache_extended', 'fe', $this->expr()->eq("$name.fileid", 'fe.fileid'));
+
+		$this->alias = $name;
+
+		return $this;
+	}
+
+	public function whereStorageId() {
+		$this->andWhere($this->expr()->eq('storage', $this->createNamedParameter($this->cache->getNumericStorageId(), IQueryBuilder::PARAM_INT)));
+
+		return $this;
+	}
+
+	public function whereFileId(int $fileId) {
+		$alias = $this->alias;
+		if ($alias) {
+			$alias .= '.';
+		} else {
+			$alias = '';
+		}
+
+		$this->andWhere($this->expr()->eq("{$alias}fileid", $this->createNamedParameter($fileId, IQueryBuilder::PARAM_INT)));
+
+		return $this;
+	}
+
+	public function wherePath(string $path) {
+		$this->andWhere($this->expr()->eq('path_hash', $this->createNamedParameter(md5($path))));
+
+		return $this;
+	}
+
+	public function whereParent(int $parent) {
+		$alias = $this->alias;
+		if ($alias) {
+			$alias .= '.';
+		} else {
+			$alias = '';
+		}
+
+		$this->andWhere($this->expr()->eq("{$alias}parent", $this->createNamedParameter($parent, IQueryBuilder::PARAM_INT)));
+
+		return $this;
+	}
+}