/**
* Convert a FolderInterface object into a MongoFolder object.
* @param FolderInterface $folder
* @return \MongoFolder
*/
public static function loadFromFolderInterface(FolderInterface $folder)
{
$conditions = array();
$conditions[] = array("path" => $folder->getPath());
$conditions[] = array("name" => $folder->getName());
$query = array('$and' => $conditions);
/* @var $gridFsDoc MongoGridFsFile */
$gridFs = ConnectionHandler::getInstance()->getConnection();
$gridFsDoc = $gridFs->findOne($query);
if ($gridFsDoc === null) {
print "Failed to find mongo folder for provided folder interface." . PHP_EOL;
print "path: " . $folder->getPath() . PHP_EOL;
print "name: " . $folder->getName() . PHP_EOL;
die;
}
/* @var $mongoId MongoId */
$folderMongoId = $gridFsDoc->file["_id"];
$name = $gridFsDoc->file['name'];
$creationTime = $gridFsDoc->path['creation_time'];
$mongoFolder = new MongoFolder($name, $creationTime);
if (isset($gridFsDoc->file["parent"])) {
$parent = MongoFolder::loadFromMongoId($gridFsDoc->file["parent"]);
$mongoFolder->setParentFolder($parent);
}
$mongoFolder->mMongoId = $folderMongoId;
$mongoFolder->mGridFsFile = $gridFsDoc;
return $mongoFolder;
}
/**
* Load this object from the provided document within the gridfs system.
* @param MongoGridFSFile $doc - the doc that represents a file.
* @return \MongoFile
*/
public static function loadFromMongoDoc(MongoGridFSFile $doc)
{
$name = $doc->file['name'];
$modificationTime = $doc->file['modification_time'];
$creationTime = $doc->file['creation_time'];
$parentFolder = MongoFolder::loadFromMongoId($doc->file['parent']);
$mongoFile = new MongoFile($name, $parentFolder, $creationTime, $modificationTime, $doc);
$mongoFile->mMongoId = $id;
return $mongoFile;
}
/**
* Create the root folder that has no parent or name, and its path is just /
* I do not understand why this takes a FolderInterface as a parameter.
* @param FolderInterface $folder - the folder we wish to have as the root.
*
* @return FolderInterface - the created folder.
*/
public function createRootFolder(FolderInterface $folder)
{
$folder->setName("");
$folder->setPath("/");
$gridFs = ConnectionHandler::getInstance()->getConnection();
$metadata = array('name' => $folder->getName(), 'path' => $folder->getPath(), 'creation_time' => $folder->getCreatedTime(), 'type' => 'folder');
$mongoId = $gridFs->storeBytes("", $metadata);
# folder is an empty file with metadata
$mongoFolder = MongoFolder::loadFromMongoId($mongoId);
return $mongoFolder;
}
/**
* Fetch the parent folder that contains this object.
* @return FolderInterface
* @throws Exception - if there is no parent
*/
public function getParentFolder()
{
$parentMongoId = $this->getMetadataField("parent");
if ($parentMongoId !== null) {
$mongoFolder = MongoFolder::loadFromMongoId($parentMongoId);
} else {
throw new Exception("Folder has no parent");
}
return $mongoFolder;
}
