set() — langchain Function Reference

Architecture documentation for the set() function in entity.py from the langchain codebase.

Function python LangChainCore Runnables calls 1

Entity Profile

LangChainCore→ Runnables→ set() — langchain Function Reference

Dependency Diagram

graph TD
  5815fe41_90c9_034c_6b77_d9442e944639["set()"]
  40387f29_12a3_f291_fc18_4ce17ac91db3["SQLiteEntityStore"]
  5815fe41_90c9_034c_6b77_d9442e944639 -->|defined in| 40387f29_12a3_f291_fc18_4ce17ac91db3
  bb3de870_d9a2_b2ef_b746_608a90b30ec8["_execute_query()"]
  5815fe41_90c9_034c_6b77_d9442e944639 -->|calls| bb3de870_d9a2_b2ef_b746_608a90b30ec8
  style 5815fe41_90c9_034c_6b77_d9442e944639 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/langchain_classic/memory/entity.py lines 422–432

    def set(self, key: str, value: str | None) -> None:
        """Inserts or replaces a value, safely quoting the table name."""
        if not value:
            return self.delete(key)
        # Ignore S608 since we validate for malicious table/session names in `__init__`
        query = (
            "INSERT OR REPLACE INTO "  # noqa: S608
            f'"{self.full_table_name}" (key, value) VALUES (?, ?)'
        )
        self._execute_query(query, (key, value))
        return None