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on_retriever_start() — langchain Function Reference

Architecture documentation for the on_retriever_start() function in fake_callback_handler.py from the langchain codebase.

Function python LangChainCore ApiManagement calls 1

Entity Profile

Dependency Diagram

graph TD
  81c0e511_f1cc_a7f1_bca9_ab64da259d42["on_retriever_start()"]
  66da139c_43ad_70b6_544d_0cf450da0b2f["FakeCallbackHandler"]
  81c0e511_f1cc_a7f1_bca9_ab64da259d42 -->|defined in| 66da139c_43ad_70b6_544d_0cf450da0b2f
  3931e249_ffc6_ac10_df10_85f4f422faab["on_retriever_start_common()"]
  81c0e511_f1cc_a7f1_bca9_ab64da259d42 -->|calls| 3931e249_ffc6_ac10_df10_85f4f422faab
  style 81c0e511_f1cc_a7f1_bca9_ab64da259d42 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/tests/unit_tests/callbacks/fake_callback_handler.py lines 252–257

    def on_retriever_start(
        self,
        *args: Any,
        **kwargs: Any,
    ) -> Any:
        self.on_retriever_start_common()

Domain

Subdomains

Defined In

Calls

Source

Frequently Asked Questions

What does on_retriever_start() do?
on_retriever_start() is a function in the langchain codebase, defined in libs/langchain/tests/unit_tests/callbacks/fake_callback_handler.py.
Where is on_retriever_start() defined?
on_retriever_start() is defined in libs/langchain/tests/unit_tests/callbacks/fake_callback_handler.py at line 252.
What does on_retriever_start() call?
on_retriever_start() calls 1 function(s): on_retriever_start_common.

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