GitHub user dosubot[bot] added a comment to the discussion: 关于电网拓扑数据导入
<!-- Greeting --> Hi @wangzhewwzz! I'm [Dosu](https://go.dosu.dev/dosubot) and I’m helping the incubator-hugegraph team. <!-- Answer --> 关于“仅支持单标签”，在 HugeGraph 1.7.0 版本中，每个边标签（EdgeLabel）只能定义一个源点标签和一个目标点标签（比如 schema.edgeLabel("knows").sourceLabel("person").targetLabel("person").create()），不能用一个边标签连接多种类型的点。如果你的电网拓扑数据里有“变电站-设备”、“变电站-线路”等多种关系，需要为每种关系分别创建边标签，比如： ```groovy schema.edgeLabel("substation_to_equipment").sourceLabel("substation").targetLabel("equipment").create() schema.edgeLabel("substation_to_line").sourceLabel("substation").targetLabel("line").create() ``` 只有“变电站-变电站”关系导入成功，说明你的 schema 只定义了这一个边标签，其他关系没有定义或数据标签与 schema 不匹配。修改标签后导入失败，是因为 HugeGraph 不允许修改已创建的边标签的源/目标标签或 link，必须先删除原标签再重新创建。 正确做法是：先根据你的数据类型，分别定义所有需要的点标签和边标签，确保每个边标签只连接一种源点和目标点类型。数据导入时，点和边的 label 必须和 schema 完全一致，否则会报错。 目前没有官方技术咨询群，大家一般通过 GitHub issues 或 discussions 交流。 如果需要更详细的 schema 示例或导入流程，可以补充你的数据结构，我可以帮你梳理具体 schema 定义和导入步骤。 相关源码和示例可参考： - [边标签只能有一个源/目标标签](https://github.com/apache/incubator-hugegraph/blob/master/hugegraph-server/hugegraph-core/src/main/java/org/apache/hugegraph/schema/builder/EdgeLabelBuilder.java) - [schema 定义与数据导入示例](https://github.com/apache/incubator-hugegraph/blob/a53af864b31f803780a1db31cb20d3d94d5d34fc/hugegraph-server/hugegraph-dist/src/assembly/static/scripts/example.groovy) <!-- Dosu Comment Footer --> *To reply, just mention [@dosu](https://go.dosu.dev/dosubot).* --- <sup>How did I do? 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