o
    {qi
                     @   s   d dl Z d dlmZmZ d dlmZ d dlmZ d dlm	Z	 d dl
mZ d dlmZ d dlmZ d d	lmZ e eZd
ZeeZG dd deZdS )    N)#AsyncCallbackManagerForRetrieverRunCallbackManagerForRetrieverRun)Document)BaseLLMStrOutputParser)BasePromptTemplate)PromptTemplate)BaseRetriever)RunnablezYou are an assistant tasked with taking a natural language query from a user and converting it into a query for a vectorstore. In this process, you strip out information that is not relevant for the retrieval task. Here is the user query: {question}c                
   @   sx   e Zd ZU dZeed< eed< eefdede	de
dd fddZd	ed
edee fddZd	ed
edee fddZdS )RePhraseQueryRetrieverz\Given a query, use an LLM to re-phrase it.
    Then, retrieve docs for the re-phrased query.	retriever	llm_chainllmpromptreturnc                 C   s   ||B t  B }| ||dS )ap  Initialize from llm using default template.

        The prompt used here expects a single input: `question`

        Args:
            retriever: retriever to query documents from
            llm: llm for query generation using DEFAULT_QUERY_PROMPT
            prompt: prompt template for query generation

        Returns:
            RePhraseQueryRetriever
        )r   r   r   )clsr   r   r   r    r   f/home/app/PaddleOCR-VL/.venv_paddleocr/lib/python3.10/site-packages/langchain/retrievers/re_phraser.pyfrom_llm"   s
   zRePhraseQueryRetriever.from_llmqueryrun_managerc                C   s:   | j |d| i}td| | jj|d| idS )zGet relevant documents given a user question.

        Args:
            query: user question

        Returns:
            Relevant documents for re-phrased question
        	callbackszRe-phrased question: %s)config)r   ZinvokeZ	get_childloggerinfor   )selfr   r   Zre_phrased_questionr   r   r   _get_relevant_documents;   s   

z.RePhraseQueryRetriever._get_relevant_documentsc                   s   t )N)NotImplementedError)r   r   r   r   r   r   _aget_relevant_documentsS   s   z/RePhraseQueryRetriever._aget_relevant_documentsN)__name__
__module____qualname____doc__r
   __annotations__r   classmethodDEFAULT_QUERY_PROMPTr   r   r   strr   listr   r   r   r   r   r   r   r   r      s:   
 
r   )loggingZlangchain_core.callbacksr   r   Zlangchain_core.documentsr   Zlangchain_core.language_modelsr   Zlangchain_core.output_parsersr   Zlangchain_core.promptsr   Zlangchain_core.prompts.promptr	   Zlangchain_core.retrieversr
   Zlangchain_core.runnablesr   	getLoggerr    r   ZDEFAULT_TEMPLATEZfrom_templater&   r   r   r   r   r   <module>   s    

