Re: [I] [Question] 创建边 使用 PrimaryKey直接绑定主键值能否实现? [incubator-hugegraph]

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dosubot[bot] commented on issue #2777:
URL: 
https://github.com/apache/incubator-hugegraph/issues/2777#issuecomment-2908994607

   <!-- Answer -->
   有，官方文档中有完整的 Groovy 脚本案例，演示了如何用 PrimaryKey（主键属性）直接绑定主键值来创建顶点和边。核心流程如下：
   
   1. 定义属性和 schema（顶点主键、边类型）：
   ```groovy
   // 定义属性
   schema.propertyKey("name").asText().ifNotExist().create();
   schema.propertyKey("age").asInt().ifNotExist().create();
   schema.propertyKey("city").asText().ifNotExist().create();
   schema.propertyKey("price").asDouble().ifNotExist().create();
   
   // 定义 person 顶点，主键为 name
   schema.vertexLabel("person").properties("name", "age", 
"city").primaryKeys("name").ifNotExist().create();
   // 定义 software 顶点，主键为 name
   schema.vertexLabel("software").properties("name", 
"price").primaryKeys("name").ifNotExist().create();
   
   // 定义边类型
   
schema.edgeLabel("knows").sourceLabel("person").targetLabel("person").ifNotExist().create();
   
schema.edgeLabel("created").sourceLabel("person").targetLabel("software").ifNotExist().create();
   ```
   
   2. 插入数据（直接用主键值作为唯一标识，无需显式指定顶点 ID）：
   ```groovy
   // 插入 person 顶点
   graph.addVertex(T.label, "person", "name", "marko", "age", 29, "city", 
"Beijing");
   graph.addVertex(T.label, "person", "name", "vadas", "age", 27, "city", 
"Hongkong");
   
   // 插入 software 顶点
   graph.addVertex(T.label, "software", "name", "lop", "price", 328.0);
   
   // 创建边，直接用主键值绑定
   graph.addEdge(T.label, "knows", T.source, "marko", T.target, "vadas");
   graph.addEdge(T.label, "created", T.source, "marko", T.target, "lop");
   ```
   
   只要 schema 里顶点主键设置正确，创建边时直接用主键值即可，HugeGraph 会自动根据 VertexLabel + 
PrimaryKeyValues 生成顶点 ID 并完成边的绑定，无需手动指定 ID。
   
   详细案例和说明可参考官方文档：[HugeGraph Loader 
快速入门](https://github.com/apache/incubator-hugegraph-doc/blob/master/content/en/docs/quickstart/hugegraph-loader.md)（案例在“schema.groovy”部分）【[引用1](https://github.com/apache/incubator-hugegraph-doc/blob/master/content/en/docs/quickstart/hugegraph-loader.md)】。
   
   如需更复杂的 schema 或多主键场景，也可以用同样方式扩展。
   
   
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