def search(self, regex):
        try:
            spec = {'$or': [{'data.content'    : {'$regex': regex, '$options': 'im'}},
                            {'data.description': {'$regex': regex, '$options': 'im'}}]}
            fields = {'_id': 0}
            cur = self.db.docs.find(spec, fields)
        except Exception as e:
            raise DatabaseException(e)
        return [Document(**row) for row in cur]
def setUp(self):
        entry_Li = ComputedEntry("Li", -1.90753119)

        with open(os.path.join(PymatgenTest.TEST_FILES_DIR, "LiTiO2_batt.json")) as f:
            entries_LTO = json.load(f, cls=MontyDecoder)
            self.ie_LTO = InsertionElectrode.from_entries(entries_LTO, entry_Li)

        with open(os.path.join(PymatgenTest.TEST_FILES_DIR, "FeF3_batt.json")) as fid:
            entries = json.load(fid, cls=MontyDecoder)
            self.ce_FF = ConversionElectrode.from_composition_and_entries(Composition("FeF3"), entries)