Function xml_to_json

LightRAG/lightrag/utils.py:215–272

(xml_file)

def xml_to_json(xml_file):
    try:
        tree = ET.parse(xml_file)
        root = tree.getroot()

        # Print the root element's tag and attributes to confirm the file has been correctly loaded
        print(f"Root element: {root.tag}")
        print(f"Root attributes: {root.attrib}")

        data = {"nodes": [], "edges": []}

        # Use namespace
        namespace = {"": "http://graphml.graphdrawing.org/xmlns"}

        for node in root.findall(".//node", namespace):
            node_data = {
                "id": node.get("id").strip('"'),
                "entity_type": node.find("./data[@key='d0']", namespace).text.strip('"')
                if node.find("./data[@key='d0']", namespace) is not None
                else "",
                "description": node.find("./data[@key='d1']", namespace).text
                if node.find("./data[@key='d1']", namespace) is not None
                else "",
                "source_id": node.find("./data[@key='d2']", namespace).text
                if node.find("./data[@key='d2']", namespace) is not None
                else "",
            }
            data["nodes"].append(node_data)

        for edge in root.findall(".//edge", namespace):
            edge_data = {
                "source": edge.get("source").strip('"'),
                "target": edge.get("target").strip('"'),
                "weight": float(edge.find("./data[@key='d3']", namespace).text)
                if edge.find("./data[@key='d3']", namespace) is not None
                else 0.0,
                "description": edge.find("./data[@key='d4']", namespace).text
                if edge.find("./data[@key='d4']", namespace) is not None
                else "",
                "keywords": edge.find("./data[@key='d5']", namespace).text
                if edge.find("./data[@key='d5']", namespace) is not None
                else "",
                "source_id": edge.find("./data[@key='d6']", namespace).text
                if edge.find("./data[@key='d6']", namespace) is not None
                else "",
            }
            data["edges"].append(edge_data)

        # Print the number of nodes and edges found
        print(f"Found {len(data['nodes'])} nodes and {len(data['edges'])} edges")

        return data
    except ET.ParseError as e:
        print(f"Error parsing XML file: {e}")
        return None
    except Exception as e:
        print(f"An error occurred: {e}")
        return None