def delete(self, doc):
        if doc.id is None:
            raise DatabaseException('Document does not have id')
        if doc.sid is None:
            try:
                rs = self.db.docs.remove({'id': doc.id}, safe=True)
                assert rs['n'] == 1
            except Exception as e:
                raise DatabaseException(e)
            return None
        doc.data = None
        return self.update(doc)
def __init__(self):
        self.SOURCE_HTML_BASE_FOLDER_PATH = u"cameo_res\\source_html"
        self.PARSED_RESULT_BASE_FOLDER_PATH = u"cameo_res\\parsed_result"
        self.strWebsiteDomain = u"http://buzzorange.com/techorange"
        self.dicSubCommandHandler = {
            "index":self.downloadIndexPage,
            "tag":self.downloadTagPag,
            "news":self.downloadNewsPage
        }
        self.utility = Utility()
        self.db = LocalDbForTECHORANGE()
        self.driver = None