base.py 文件源码

def get_view_definition(self, connection, view_name, schema=None,
                            resolve_synonyms=False, dblink='', **kw):
        info_cache = kw.get('info_cache')
        (view_name, schema, dblink, synonym) = \
            self._prepare_reflection_args(connection, view_name, schema,
                                          resolve_synonyms, dblink,
                                          info_cache=info_cache)

        params = {'view_name': view_name}
        text = "SELECT text FROM all_views WHERE view_name=:view_name"

        if schema is not None:
            text += " AND owner = :schema"
            params['schema'] = schema

        rp = connection.execute(sql.text(text), **params).scalar()
        if rp:
            if util.py2k:
                rp = rp.decode(self.encoding)
            return rp
        else:
            return None