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BaseEntityStore Class — langchain Architecture

Architecture documentation for the BaseEntityStore class in entity.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  d6a371b0_afe3_1ceb_cd58_c254c31b562e["BaseEntityStore"]
  1ed59830_902e_f3ce_f9f6_76963a6fd122["entity.py"]
  d6a371b0_afe3_1ceb_cd58_c254c31b562e -->|defined in| 1ed59830_902e_f3ce_f9f6_76963a6fd122
  6560dbd6_8588_9d8f_d467_ab24a097ad9c["get()"]
  d6a371b0_afe3_1ceb_cd58_c254c31b562e -->|method| 6560dbd6_8588_9d8f_d467_ab24a097ad9c
  b8645598_170e_3bc8_8508_c397ac0ae837["set()"]
  d6a371b0_afe3_1ceb_cd58_c254c31b562e -->|method| b8645598_170e_3bc8_8508_c397ac0ae837
  b39825d1_c9f8_ab22_a969_6ad8d6e4311e["delete()"]
  d6a371b0_afe3_1ceb_cd58_c254c31b562e -->|method| b39825d1_c9f8_ab22_a969_6ad8d6e4311e
  b785a1c1_e1fc_eaf7_ee85_db1de7b4f94c["exists()"]
  d6a371b0_afe3_1ceb_cd58_c254c31b562e -->|method| b785a1c1_e1fc_eaf7_ee85_db1de7b4f94c
  8571bd81_5e8d_c782_2b9d_90df202eaae0["clear()"]
  d6a371b0_afe3_1ceb_cd58_c254c31b562e -->|method| 8571bd81_5e8d_c782_2b9d_90df202eaae0

Relationship Graph

Source Code

libs/langchain/langchain_classic/memory/entity.py lines 38–59

class BaseEntityStore(BaseModel, ABC):
    """Abstract base class for Entity store."""

    @abstractmethod
    def get(self, key: str, default: str | None = None) -> str | None:
        """Get entity value from store."""

    @abstractmethod
    def set(self, key: str, value: str | None) -> None:
        """Set entity value in store."""

    @abstractmethod
    def delete(self, key: str) -> None:
        """Delete entity value from store."""

    @abstractmethod
    def exists(self, key: str) -> bool:
        """Check if entity exists in store."""

    @abstractmethod
    def clear(self) -> None:
        """Delete all entities from store."""

Defined In

Source

Frequently Asked Questions

What is the BaseEntityStore class?
BaseEntityStore is a class in the langchain codebase, defined in libs/langchain/langchain_classic/memory/entity.py.
Where is BaseEntityStore defined?
BaseEntityStore is defined in libs/langchain/langchain_classic/memory/entity.py at line 38.

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