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OrientDB中使用顶点和边建立对象和关系

OrientDB中使用顶点和边建立对象和关系

作者: jiaxiaolei | 来源:发表于2017-12-09 22:43 被阅读57次

    直接使用顶点V:

    -- # 小朱25岁,出生在教师家庭并且有个姐姐小田,他现在奋斗在帝都。 
    
    CREATE VERTEX V SET name="小朱",sex="男",age="25";
    CREATE VERTEX V SET name="小田",sex="女",age="27";
    CREATE EDGE E FROM #9:0 TO #10:0 SET name="sister";
    CREATE EDGE E FROM #10:0 TO #9:0 SET name="brother";
    SELECT * FROM V WHERE name in ['小朱',"小田"];
    
    
    image.png image.png image.png
    
    -- # 小朱还有一个可爱的女盆友叫小刘
    
    
    CREATE VERTEX V SET name="小刘",sex="女",age="23";
    CREATE EDGE E FROM #9:0 TO #11:0 SET name="lover";
    CREATE EDGE E FROM #11:0 TO #9:0 SET name="lover";
    
    image.png image.png

    -- # 小朱目前工作在企业Google,他有一堆同事小马、小龚、小微…..

    CREATE VERTEX V SET name="Google";
    CREATE VERTEX V SET name="小马",sex="男",age="29",company="Google";
    CREATE VERTEX V SET name="小龚",sex="男",age="28",company="Google";
    CREATE VERTEX V SET name="小微",sex="女",age="24",company="Google";
    UPDATE V SET company = 'Google' WHERE name='小朱'
    CREATE EDGE E FROM (select from V where company='Google') TO (select from V where name ='Google') SET name="employee";
    
    
    image.png image.png

    -- # 小朱目前跟不同同事合作完成了如下项目:PROJECT-1,PROJECT-2,PROJECT-3…..

    CREATE VERTEX V SET name="PROJECT-1",type='JAVA',starttime='2016/01/01';
    CREATE VERTEX V SET name="PROJECT-2",type='JAVA',starttime='2016/01/01';
    CREATE VERTEX V SET name="PROJECT-3",type='JAVA',starttime='2016/01/01';
    
    CREATE EDGE E FROM (select from V where name in ['小朱','小马','小微']) TO (select from v where name='PROJECT-1') SET name="work";
    CREATE EDGE E FROM (select from V where name in ['小朱','小马','小微','小龚']) TO (select from v where name='PROJECT-2') SET name="work";
    CREATE EDGE E FROM (select from V where name in ['小朱','小马','小龚']) TO (select from v where name='PROJECT-3') SET name="work";
    
    
    image.png image.png

    NOTE:

    所有点和边缘均继承祖先V、E对象,不能方便的通过语句进行筛选,不推荐直接创建V、E记录。

    使用扩展的顶点和边:

    CREATE CLASS Company EXTENDS V;
    CREATE CLASS Project EXTENDS V;
    CREATE CLASS Preson EXTENDS V;
    CREATE CLASS Lover EXTENDS E;
    CREATE CLASS Sister EXTENDS E;
    CREATE CLASS Brother EXTENDS E;
    CREATE CLASS Employee EXTENDS E;
    CREATE CLASS Work EXTENDS E;
    
    CREATE VERTEX Preson SET name="小朱",sex="男",age="25",company="Google";
    CREATE VERTEX Preson SET name="小刘",sex="女",age="23";
    CREATE VERTEX Preson SET name="小田",sex="女",age="27";
    
    CREATE VERTEX Company SET name="Google";
    
    CREATE VERTEX Preson SET name="小马",sex="男",age="29",company="Google";
    CREATE VERTEX Preson SET name="小龚",sex="男",age="28",company="Google";
    CREATE VERTEX Preson SET name="小微",sex="女",age="24",company="Google";
    
    CREATE VERTEX Project SET name="PROJECT-1",type='JAVA',starttime='2016/01/01';
    CREATE VERTEX Project SET name="PROJECT-2",type='JAVA',starttime='2016/01/01';
    CREATE VERTEX Project SET name="PROJECT-3",type='JAVA',starttime='2016/01/01';
    
    -- # 把以前的顶点移动到每个具体的类别
    -- # MOVE VERTEX(SELECT FROM V WHERE name='Google') TO CLASS:Company;
    
    -- #创建情侣关系
    CREATE EDGE Lover FROM (select from Preson where name='小朱') TO (select from Preson where name='小刘');
    CREATE EDGE Lover FROM (select from Preson where name='小刘') TO (select from Preson where name='小朱');
    
    -- #创建姐弟关系
    CREATE EDGE Sister FROM (select from Preson where name='小朱') TO (select from Preson where name='小田');
    CREATE EDGE Brother FROM (select from Preson where name='小田') TO (select from Preson where name='小朱');
    
    -- #创建雇佣关系
    CREATE EDGE Employee FROM (select from Preson where company='Google') TO (select from Company where name ='Google');
    
    -- #创建项目关系
    CREATE EDGE Work FROM (select from Preson where name in ['小朱','小马','小微']) TO (select from Project where name='PROJECT-1');
    CREATE EDGE Work FROM (select from Preson where name in ['小朱','小马','小微','小龚']) TO (select from Project where name='PROJECT-2');
    CREATE EDGE Work FROM (select from Preson where name in ['小朱','小马','小龚']) TO (select from Project where name='PROJECT-3');
    

    查看:

    SELECT * FROM V;
    
    图1 顶点&边的图 图二 完整的WEB UI

    扩展阅读:

    OrientDB 图计算框架
    http://blog.csdn.net/zhufengyi/article/details/53037764

    简介:

    介绍了SQL命令,还提供了场景。

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