Add hint log for when data is added but not cognified

cognee/api/v1/datasets/datasets.py

@@ -1,4 +1,5 @@
 from uuid import UUID
+from cognee.modules.data.methods import has_dataset_data
 from cognee.modules.users.methods import get_default_user
 from cognee.modules.ingestion import discover_directory_datasets
 from cognee.modules.pipelines.operations.get_pipeline_status import get_pipeline_status
@@ -26,6 +27,16 @@ class datasets:
 
         return await get_dataset_data(dataset.id)
 
+    @staticmethod
+    async def has_data(dataset_id: str) -> bool:
+        from cognee.modules.data.methods import get_dataset
+
+        user = await get_default_user()
+
+        dataset = await get_dataset(user.id, dataset_id)
+
+        return await has_dataset_data(dataset.id)
+
     @staticmethod
     async def get_status(dataset_ids: list[UUID]) -> dict:
         return await get_pipeline_status(dataset_ids, pipeline_name="cognify_pipeline")

cognee/modules/data/methods/__init__.py

@@ -23,3 +23,6 @@ from .create_authorized_dataset import create_authorized_dataset
 
 # Check
 from .check_dataset_name import check_dataset_name
+
+# Boolean check
+from .has_dataset_data import has_dataset_data

cognee/modules/data/methods/has_dataset_data.py

@@ -0,0 +1,21 @@
+from uuid import UUID
+
+from sqlalchemy import select
+from sqlalchemy.sql import func
+
+from cognee.infrastructure.databases.relational import get_relational_engine
+from cognee.modules.data.models import DatasetData
+
+
+async def has_dataset_data(dataset_id: UUID) -> bool:
+    db_engine = get_relational_engine()
+
+    async with db_engine.get_async_session() as session:
+        count_query = (
+            select(func.count())
+            .select_from(DatasetData)
+            .where(DatasetData.dataset_id == dataset_id)
+        )
+        count = await session.execute(count_query)
+
+        return count.scalar_one() > 0

cognee/modules/search/methods/search.py

@@ -338,7 +338,19 @@ async def search_in_datasets_context(
 
         if is_empty:
             # TODO: we can log here, but not all search types use graph. Still keeping this here for reviewer input
-            logger.warning("Search attempt on an empty knowledge graph")
+            from cognee.modules.data.methods import get_dataset_data
+
+            dataset_data = await get_dataset_data(dataset.id)
+
+            if len(dataset_data) > 0:
+                logger.warning(
+                    f"Dataset '{dataset.name}' has {len(dataset_data)} data item(s) but the knowledge graph is empty. "
+                    "Please run cognify to process the data before searching."
+                )
+            else:
+                logger.warning(
+                    "Search attempt on an empty knowledge graph - no data has been added to this dataset"
+                )
 
         specific_search_tools = await get_search_type_tools(
             query_type=query_type,