fix: removing last_acessed_at from individual model and adding it to DataPoint

cognee/infrastructure/engine/models/DataPoint.py

@@ -43,6 +43,9 @@ class DataPoint(BaseModel):
     updated_at: int = Field(
         default_factory=lambda: int(datetime.now(timezone.utc).timestamp() * 1000)
     )
+    last_accessed_at: int = Field(  
+        default_factory=lambda: int(datetime.now(timezone.utc).timestamp() * 1000)  
+    )
     ontology_valid: bool = False
     version: int = 1  # Default version
     topological_rank: Optional[int] = 0

cognee/modules/chunking/models/DocumentChunk.py

@@ -35,9 +35,4 @@ class DocumentChunk(DataPoint):
     cut_type: str
     is_part_of: Document
     contains: List[Union[Entity, Event]] = None
-    
-    last_accessed_at: int = Field(  
-        default_factory=lambda: int(datetime.now(timezone.utc).timestamp() * 1000)  
-    )  
-
     metadata: dict = {"index_fields": ["text"]}

cognee/modules/engine/models/Entity.py

@@ -8,7 +8,4 @@ class Entity(DataPoint):
     name: str
     is_a: Optional[EntityType] = None
     description: str
-    last_accessed_at: int = Field(  
-        default_factory=lambda: int(datetime.now(timezone.utc).timestamp() * 1000)  
-    )
     metadata: dict = {"index_fields": ["name"]}

cognee/tasks/summarization/models.py

@@ -19,9 +19,6 @@ class TextSummary(DataPoint):
 
     text: str
     made_from: DocumentChunk
-    last_accessed_at: int = Field(  
-        default_factory=lambda: int(datetime.now(timezone.utc).timestamp() * 1000)  
-    )
     metadata: dict = {"index_fields": ["text"]}