serializer.py 文件源码

def deserialize(cls, json_string):
        """
        Builds a Graph from a JSON representation
        :param json_string: JSON str
        :return: datamodel.base.graph.Graph instance
        """
        try:
            graph_dict = json.loads(json_string)
            result = graph.Graph(name=graph_dict['name'])
            nodes = dict()
            for item in graph_dict['nodes']:
                nodes[item['id']] = NodeSerializer.from_dict(item['data'])
            result.add_nodes(nodes.values())
            for e in graph_dict['edges']:
                result.connect(nodes[e['id_node_from']],
                               nodes[e['id_node_to']],
                               e['output_label'])
            return result
        except Exception as e:
            raise
            #raise GraphDeserializationException(e.message)