public FileMetadata UpdateMetadata(string username, FileMetadata aFileMetadata, FileBlobdata aFileBlobdata)
{
//if NO conflict, save the Metadata in local database & save Blobdata in Blob Server, then update FileMetadata and return
//if conflict, reject this update and return error reason in FileMetadata. Then let client to rename the file and upate again
//Future Plan: Maybe the Blobdata can be saved to avoid upload again, but need a mechanism to collect garbage if client does not update again.
return(null);
}
public FileMetadata UploadFile(FileMetadata aFileMetadata, FileBlobdata aFileBlobdata)
{
return(null);
}
