Give storages the option to implement the getById behaviour for View->getPath

2 files changed, 28 insertions, 5 deletions

diff --git a/lib/files/cache/cache.php b/lib/files/cache/cache.php
index c8fa27e402b..d62a904648f 100644
--- a/lib/files/cache/cache.php
+++ b/lib/files/cache/cache.php
@@ -662,6 +662,23 @@ class Cache {
 	/**
 	 * get the storage id of the storage for a file and the internal path of the file
 	 *
+	 * @param int $id
+	 * @return string | null
+	 */
+	public function getPathById($id) {
+		$sql = 'SELECT `path` FROM `*PREFIX*filecache` WHERE `fileid` = ? AND `storage` = ?';
+		$result = \OC_DB::executeAudited($sql, array($id, $this->getNumericStorageId()));
+		if ($row = $result->fetchRow()) {
+			return $row['path'];
+		} else {
+			return null;
+		}
+	}
+
+	/**
+	 * get the storage id of the storage for a file and the internal path of the file
+	 *
+	 * @param int $id
 	 * @return array, first element holding the storage id, second the path
 	 */
 	static public function getById($id) {
diff --git a/lib/files/view.php b/lib/files/view.php
index 19dea87e3bc..3d5d45703e7 100644
--- a/lib/files/view.php
+++ b/lib/files/view.php
@@ -1059,15 +1059,21 @@ class View {
 	 * @return string
 	 */
 	public function getPath($id) {
-		list($storage, $internalPath) = Cache\Cache::getById($id);
-		$mounts = Mount::findByStorageId($storage);
+		$mounts = Mount::findIn($this->fakeRoot);
+		$mounts[] = Mount::find($this->fakeRoot);
+		// reverse the array so we start with the storage this view is in
+		// which is the most likely to contain the file we're looking for
+		$mounts = array_reverse($mounts);
 		foreach ($mounts as $mount) {
 			/**
 			 * @var \OC\Files\Mount $mount
 			 */
-			$fullPath = $mount->getMountPoint() . $internalPath;
-			if (!is_null($path = $this->getRelativePath($fullPath))) {
-				return $path;
+			$cache = $mount->getStorage()->getCache();
+			if ($internalPath = $cache->getPathById($id)) {
+				$fullPath = $mount->getMountPoint() . $internalPath;
+				if (!is_null($path = $this->getRelativePath($fullPath))) {
+					return $path;
+				}
 			}
 		}
 		return null;