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简介

融合DSL是GeaFlow提供的图表一体的数据分析语言,支持标准SQL+ISO/GQL进行图表分析.通过融合DSL可以对表数据做关系运算处理,也可以对图数据做图匹配和图算法计算,同时也支持同时图表数据的联合处理.

融合DSL使用案例

  • 通过SQL处理GQL结果
    SELECT
    a.id,
    b.id,
    AVG(e.amt),
    MAX(e.amt)
  
    FROM (
    MATCH (a) -[e:knows]->(b:person where b.id != 1)
    RETURN a, e, b
    ) 
    Group By a.id, b.id
    Having AVG(e.amt) > 10

GQL Match返回的Path可以通过SQL做进一步分析处理.

  • 通过SQL触发GQL图查询
    SELECT *
    FROM (
      WITH p AS (
    	SELECT * FROM (VALUES(1, 'r0', 0.4), (4, 'r1', 0.5)) AS t(id, name, weight)
      )
      MATCH (a:person where id = p.id) -[e where weight > p.weight]->(b)
      RETURN p.name as name, a.id as a_id, e.weight as weight, b.id as b_id
    )

可以给GQL定义一个参数表,参数表的数据逐条触发GQL查询.GQL将分别返回每个参数对应的计算结果.

Maven依赖

  • 开发UDF/UDAF/UDTF/UDGA需要添加以下依赖:
 <dependency>
    <groupId>com.antgroup.tugraph</groupId>
    <artifactId>geaflow-dsl-common</artifactId>
    <version>0.1</version>
</dependency>
  • 开发自定义Connector需添加以下依赖:
<dependency>
    <groupId>com.antgroup.tugraph</groupId>
    <artifactId>geaflow-dsl-connector-api</artifactId>
    <version>0.1</version>
</dependency>