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fix: enforce string sorting key to handle mixed metadata types (#797) #801

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fix: enforce string sorting key to handle mixed metadata types (#797) #801

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10 changes: 4 additions & 6 deletions backend/app/rag/graph_builder.py
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Original file line number Diff line number Diff line change
Expand Up @@ -132,16 +132,14 @@ def build_graph(chunks: List[Dict[str, Any]]) -> nx.Graph:
_convert_sets_for_json(graph)
return graph


def _convert_sets_for_json(graph: nx.Graph) -> None:
for _, data in graph.nodes(data=True):
data["pages"] = sorted(item for item in data.get("pages", []) if item is not None)
data["chunks"] = sorted(item for item in data.get("chunks", []) if item is not None)
data["pages"] = sorted((item for item in data.get("pages", []) if item is not None), key=str)
data["chunks"] = sorted((item for item in data.get("chunks", []) if item is not None), key=str)

for _, _, data in graph.edges(data=True):
data["pages"] = sorted(item for item in data.get("pages", []) if item is not None)
data["chunks"] = sorted(item for item in data.get("chunks", []) if item is not None)

data["pages"] = sorted((item for item in data.get("pages", []) if item is not None), key=str)
data["chunks"] = sorted((item for item in data.get("chunks", []) if item is not None), key=str)

def save_graph(graph: nx.Graph, user_id: str, document_id: str) -> Path:
"""Persist a graph to disk as node-link JSON."""
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