refactor: Move serialize_datetime function

Move serialize_datetime function to be in it's own file

Refactor #COG-170

cognee/infrastructure/databases/vector/pgvector/PGVectorAdapter.py

@@ -1,33 +1,17 @@
-from typing import List, Optional, get_type_hints
-from sqlalchemy import JSON, Column, Table, select, delete
-
-from ..models.ScoredResult import ScoredResult
 import asyncio
-
-from ..vector_db_interface import VectorDBInterface, DataPoint
-from sqlalchemy.orm import Mapped, mapped_column
-from ..embeddings.EmbeddingEngine import EmbeddingEngine
-from sqlalchemy.ext.asyncio import create_async_engine, async_sessionmaker
 from pgvector.sqlalchemy import Vector
+from typing import List, Optional, get_type_hints
+from sqlalchemy.orm import Mapped, mapped_column
+from sqlalchemy import JSON, Column, Table, select, delete
+from sqlalchemy.ext.asyncio import create_async_engine, async_sessionmaker
 
+from .serialize_datetime import serialize_datetime
+from ..models.ScoredResult import ScoredResult
+from ..vector_db_interface import VectorDBInterface, DataPoint
+from ..embeddings.EmbeddingEngine import EmbeddingEngine
 from ...relational.sqlalchemy.SqlAlchemyAdapter import SQLAlchemyAdapter
 from ...relational.ModelBase import Base
 
-from datetime import datetime
-
-
-# TODO: Find better location for function
-def serialize_datetime(data):
-    """Recursively convert datetime objects in dictionaries/lists to ISO format."""
-    if isinstance(data, dict):
-        return {key: serialize_datetime(value) for key, value in data.items()}
-    elif isinstance(data, list):
-        return [serialize_datetime(item) for item in data]
-    elif isinstance(data, datetime):
-        return data.isoformat()  # Convert datetime to ISO 8601 string
-    else:
-        return data
-
 
 class PGVectorAdapter(SQLAlchemyAdapter, VectorDBInterface):
 

cognee/infrastructure/databases/vector/pgvector/serialize_datetime.py

@@ -0,0 +1,12 @@
+from datetime import datetime
+
+def serialize_datetime(data):
+    """Recursively convert datetime objects in dictionaries/lists to ISO format."""
+    if isinstance(data, dict):
+        return {key: serialize_datetime(value) for key, value in data.items()}
+    elif isinstance(data, list):
+        return [serialize_datetime(item) for item in data]
+    elif isinstance(data, datetime):
+        return data.isoformat()  # Convert datetime to ISO 8601 string
+    else:
+        return data