fix: graphiti example (#816)

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## Description
<!-- Provide a clear description of the changes in this PR -->

## DCO Affirmation
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the terms of the Topoteretes Developer Certificate of Origin.

cognee/tasks/temporal_awareness/index_graphiti_objects.py

@@ -20,20 +20,23 @@ async def index_and_transform_graphiti_nodes_and_edges():
         logger.error("Failed to initialize engines: %s", e)
         raise RuntimeError("Initialization error") from e
 
-    await graph_engine.query("""MATCH (n) SET n.id = n.uuid RETURN n""")
+    await graph_engine.query("""MATCH (n) SET n.id = n.uuid RETURN n""", params={})
     await graph_engine.query(
         """MATCH (source)-[r]->(target) SET r.source_node_id = source.id,
                              r.target_node_id = target.id,
-                             r.relationship_name = type(r) RETURN r"""
+                             r.relationship_name = type(r) RETURN r""",
+        params={},
+    )
+    await graph_engine.query(
+        """MATCH (n) SET n.text = COALESCE(n.summary, n.content) RETURN n""", params={}
     )
-    await graph_engine.query("""MATCH (n) SET n.text = COALESCE(n.summary, n.content) RETURN n""")
 
-    nodes_data, edges_data = await graph_engine.get_model_independent_graph_data()
+    nodes_data, edges_data = await graph_engine.get_graph_data()
 
-    for node_data in nodes_data[0]["nodes"]:
+    for node_id, node_data in nodes_data:
         graphiti_node = GraphitiNode(
             **{key: node_data[key] for key in ("content", "name", "summary") if key in node_data},
-            id=node_data.get("uuid"),
+            id=node_id,
         )
 
         data_point_type = type(graphiti_node)
@@ -58,9 +61,8 @@ async def index_and_transform_graphiti_nodes_and_edges():
         await vector_engine.index_data_points(index_name, field_name, indexable_points)
 
     edge_types = Counter(
-        edge[1][1]
-        for edge in edges_data[0]["elements"]
-        if isinstance(edge, list) and len(edge) == 3
+        edge[2]  # The edge key (relationship name) is at index 2
+        for edge in edges_data
     )
 
     for text, count in edge_types.items():

examples/python/graphiti_example.py

@@ -14,6 +14,7 @@ from cognee.modules.retrieval.utils.brute_force_triplet_search import brute_forc
 from cognee.modules.retrieval.graph_completion_retriever import GraphCompletionRetriever
 from cognee.infrastructure.llm.prompts import read_query_prompt, render_prompt
 from cognee.infrastructure.llm.get_llm_client import get_llm_client
+from cognee.modules.users.methods import get_default_user
 
 text_list = [
     "Kamala Harris is the Attorney General of California. She was previously "
@@ -27,6 +28,9 @@ async def main():
     await cognee.prune.prune_system(metadata=True)
     await create_relational_db_and_tables()
 
+    # Initialize default user
+    user = await get_default_user()
+
     for text in text_list:
         await cognee.add(text)
 
@@ -34,7 +38,7 @@ async def main():
         Task(build_graph_with_temporal_awareness, text_list=text_list),
     ]
 
-    pipeline = run_tasks(tasks)
+    pipeline = run_tasks(tasks, user=user)
 
     async for result in pipeline:
         print(result)