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# ========= Copyright 2023-2024 @ CAMEL-AI.org. All Rights Reserved. =========
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ========= Copyright 2023-2024 @ CAMEL-AI.org. All Rights Reserved. =========
from abc import ABC, abstractmethod
from typing import Any, Callable
DEFAULT_TOP_K_RESULTS = 1
def _query_unimplemented(self, *input: Any) -> None:
r"""Defines the query behavior performed at every call.
Query the results. Subclasses should implement this
method according to their specific needs.
It should be overridden by all subclasses.
.. note::
Although the recipe for forward pass needs to be defined within
this function, one should call the :class:`BaseRetriever` instance
afterwards instead of this since the former takes care of running the
registered hooks while the latter silently ignores them.
"""
raise NotImplementedError(
f"Retriever [{type(self).__name__}] is missing the required"
" \"query\" function"
)
def _process_unimplemented(self, *input: Any) -> None:
r"""Defines the process behavior performed at every call.
Processes content from a file or URL, divides it into chunks by
using `Unstructured IO`,then stored internally. This method must be
called before executing queries with the retriever.
Should be overridden by all subclasses.
.. note::
Although the recipe for forward pass needs to be defined within
this function, one should call the :class:`BaseRetriever` instance
afterwards instead of this since the former takes care of running the
registered hooks while the latter silently ignores them.
"""
raise NotImplementedError(
f"Retriever [{type(self).__name__}] is missing the required "
"\"process\" function"
)
class BaseRetriever(ABC):
r"""Abstract base class for implementing various types of information
retrievers.
"""
@abstractmethod
def __init__(self) -> None:
pass
process: Callable[..., Any] = _process_unimplemented
query: Callable[..., Any] = _query_unimplemented
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