def __init__(self, bound_app, graph, *args, **kwargs):
self._bound_app = bound_app
self._graph = graph
self._session = self._bound_app.session
# add op to dag
self._op = run_app(self._bound_app, *args, **kwargs)
self._session.dag.add_op(self._op)
def _query(self, *args, **kwargs):
"""Create a `RUN_APP` Operation, and send it to analytical engine to do actual query.
Then retrieve query contexts and return.
"""
self._check_unmodified()
op = run_app(self._graph, self, *args, **kwargs)
ret = op.eval()
ret = json.loads(ret)
context_key, context_type = ret["context_key"], ret["context_type"]
results = create_context(context_type, self._session_id, context_key,
self._graph)
return results