gremlin-随机选择一个项目
随机选择其中一个用户返回
g.addV('user').property('id',1).as('1') addV('user').property('id',2).as('2'). addV('user').property('id',3).as('3'). addV('user').property('id',4).as('4'). addV('post').property('postId','post1').as('p1'). addV('post').property('postId','post2').as('p2'). addE('follow').from('1').to('2'). addE('follow').from('1').to('3'). addE('follow').from('1').to('4'). addE('posted').from('2').to('p1'). addE('posted').from('2').to('p2'). addE('liked').from('1').to('p2'). addE('liked').from('3').to('p2'). addE('liked').from('4').to('p2').iterate()
g.V().has('id',1).as('me').out('follow').aggregate('followers').out('posted').group().by('postId').by(project('likedBySelf','likedByFollowing').by(__.in('liked').where(eq('me')).count()).by(__.in('liked').where(within('followers')).order().by(shuffle).values('id').fold()))
[post1:[likedBySelf:0,likedByFollowing:[]],post2:[likedBySelf:1,likedByFollowing:[4,3]]]
[post1:[likedBySelf:0,likedByFollowing:[]],post2:[likedBySelf:1,likedByFollowing:[3]]]
[post1:[likedBySelf:0,likedByFollowing:[]],post2:[likedBySelf:1,likedByFollowing:[4]]]
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