columnMap.put("parent_file_id", parentID);
columnMap.put("size", new Long(size));
columnMap.put("owner_id", ownerID);
columnMap.put("created", now);
if (DBUtil.insert(con, "vfs_file", columnMap) != 1)
throw new DBException("new object could not insert to db.");
return new VfsFile(
objectID, name, typeID, parentID, size, ownerID, now);
}