OrientDB如何匹配多个相关类

我试图写一个匹配语句来提取相关数据

CREATE CLASS Member EXTENDS V;
CREATE CLASS DirectVolumes EXTENDS V;
CREATE SEQUENCE dvSequence TYPE ORDERED;
CREATE CLASS GroupVolumes EXTENDS V;
CREATE SEQUENCE groupVolumesSequence TYPE ORDERED;
CREATE CLASS GenerationVolumes EXTENDS V;
CREATE SEQUENCE genGroupVolumesSequence TYPE ORDERED;
CREATE SEQUENCE memberIdSeq TYPE ORDERED;
CREATE VERTEX Member SET id=sequence('memberIdSeq').next();
CREATE VERTEX DirectVolumes set id=sequence('dvSequence').next(); 
CREATE VERTEX GroupVolumes set id=sequence('groupVolumesSequence').next();
CREATE VERTEX GenerationVolumes set id=sequence('genGroupVolumesSequence').next();
CREATE EDGE OWNS_DV_CURRENT FROM (SELECT FROM Member WHERE id = 1) TO (select from DirectVolumes where id = 1);
CREATE EDGE OWNS_PG_CURRENT FROM (SELECT FROM Member WHERE id = 1) TO (select from GroupVolumes where id = 1); 
CREATE EDGE OWNS_GG_CURRENT FROM (SELECT FROM Member WHERE id = 1) TO (select from GenerationVolumes where id = 1); 

现在我希望成员和拥有当前，拥有当前，拥有当前，拥有当前边缘数据。为了简单起见，我删除了属性。 用火柴做这件事的正确方法是什么？我不知道如何获取多个相关类。查询似乎可以，但它返回0。我想它是在OWNS\u PG\u CURRENT上查找OWNS\u DV\u CURRENT，而不是在成员本身上查找OWNS\u PG\u CURRENT

select from (MATCH {class: Member, as:member}.out("OWNS_DV_CURRENT"){as:dv}.out("OWNS_PG_CURRENT") {as: pg} RETURN member, dv,pg)

试试这个：

 MATCH 
  {class: Member, as:member}.out("OWNS_DV_CURRENT"){as:dv},
  {as:member}.out("OWNS_PG_CURRENT") {as: pg} 
 RETURN member, dv,pg

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没有火柴怎么办？选择@this作为成员，out'OWNS_DV_CURRENT'作为OWNS_DV_CURRENT，out'OWNS_PG_CURRENT'作为OWNS_PG_CURRENT，out'OWNS_GG_CURRENT'作为OWNS_GG_CURRENT来自成员谢谢，看起来这对我很有用。非常感谢。此查询是获取这些节点的所有属性的正确方法吗？`选择Member.firstName作为firstName，OWNS_DV_CURRENT.id，OWNS_PG_CURRENT.id，OWNS_GG_CURRENT.id从select@this作为Member，out'OWNS_DV_CURRENT'作为OWNS_DV_CURRENT，out'OWNS_PG_CURRENT'作为OWNS_PG_CURRENT，out'OWNS_GG_CURRENT'作为OWNS_GG_CURRENT从Member'如何表示边缘的目标端及其属性？谢谢，我可以在匹配的顶部读取select查询中的属性，这理解正确吗从MATCH{class:member，as:member}中选择member.firstName，dv.id，pg.id。outOWNS_dv_CURRENT{as:dv}，{as:member}。outOWNS_pg_CURRENT{as:pg}返回member，dv，pg`是的，这是正确的，但也可以在MATCH语句中执行此操作：MATCH。。。RETURN member.firstName、dv.id、pg.id