get() — langchain Function Reference

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

Function python LangChainCore ApiManagement calls 1

Entity Profile

LangChainCore→ ApiManagement→ get() — langchain Function Reference

Dependency Diagram

graph TD
  323eba30_b983_8952_8d7a_c69c375e843a["get()"]
  40387f29_12a3_f291_fc18_4ce17ac91db3["SQLiteEntityStore"]
  323eba30_b983_8952_8d7a_c69c375e843a -->|defined in| 40387f29_12a3_f291_fc18_4ce17ac91db3
  bb3de870_d9a2_b2ef_b746_608a90b30ec8["_execute_query()"]
  323eba30_b983_8952_8d7a_c69c375e843a -->|calls| bb3de870_d9a2_b2ef_b746_608a90b30ec8
  style 323eba30_b983_8952_8d7a_c69c375e843a fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/langchain_classic/memory/entity.py lines 413–420

    def get(self, key: str, default: str | None = None) -> str | None:
        """Retrieves a value, safely quoting the table name."""
        # `?` placeholder is used for the value to prevent SQL injection
        # Ignore S608 since we validate for malicious table/session names in `__init__`
        query = f'SELECT value FROM "{self.full_table_name}" WHERE key = ?'  # noqa: S608
        cursor = self._execute_query(query, (key,))
        result = cursor.fetchone()
        return result[0] if result is not None else default