[英]How to get Post (Vertex) from all users whom I've followed (Edge) in Titan using Gremlin
我正在使用以下查詢獲取我關注的所有用戶的列表:
gv(2304).out('關注')
回應:
{
"success": true,
"results":
[
{
"Type": "User",
"CreatedTime": "2016-03-16T18:39:48.5000845Z",
"Username": "funoverflow24x7@gmail.com",
"FirstName": "Joany",
"CoverImageUrl": "https://s3-ap-southeast-1.amazonaws.com/urnotice/OrbitPage/User/Sumit/WallPost/947174ae-3e60-4dd0-877f-cc988fae3888.jpg",
"ImageUrl": "https://s3-ap-southeast-1.amazonaws.com/urnotice/OrbitPage/User/Sumit/WallPost/f4f6901c-64c4-425b-929b-43936c53eaba.png",
"LastName": "Ashtana",
"Gender": "male",
"_id": 768,
"_type": "vertex"
},
{
"Type": "User",
"CreatedTime": "2016-04-05T16:36:49.3740440Z",
"Username": "urnoticemail@gmail.com",
"FirstName": "Maria",
"CoverImageUrl": "https://s3-ap-southeast-1.amazonaws.com/urnotice/images/companyRectangleImageNotAvailable.png",
"ImageUrl": "https://s3-ap-southeast-1.amazonaws.com/urnotice/users/female_professional.png",
"LastName": "Sharapova",
"Gender": "female",
"_id": 5120256,
"_type": "vertex"
},
{
"Type": "User",
"CreatedTime": "2016-04-12T07:42:18.8036554Z",
"Username": "abhinavsrivastava189+1@gmail.com",
"FirstName": "Abhi",
"CoverImageUrl": "https://s3-ap-southeast-1.amazonaws.com/urnotice/OrbitPage/User/Sumit/WallPost/afd0d047-0d1c-4391-8f88-95f7775c615f.jpg",
"ImageUrl": "https://s3-ap-southeast-1.amazonaws.com/urnotice/OrbitPage/User/Sumit/WallPost/fd0842d4-579b-4896-9525-945f8f718816.JPG",
"LastName": "Sri",
"Gender": "male",
"_id": 12800512,
"_type": "vertex"
},
{
"Type": "User",
"CreatedTime": "2016-04-15T07:51:34.3867249Z",
"Username": "786goopchup@gmail.com",
"FirstName": "Goop",
"CoverImageUrl": "",
"ImageUrl": "https://lh3.googleusercontent.com/-XdUIqdMkCWA/AAAAAAAAAAI/AAAAAAAAAAA/4252rscbv5M/photo.jpg",
"LastName": "Chup",
"Gender": "NA",
"_id": 17928960,
"_type": "vertex"
},
{
"Type": "User",
"CreatedTime": "2016-04-20T03:25:30.0753729Z",
"Username": "sumit@thirdeyeinc.com",
"FirstName": "Kunal",
"CoverImageUrl": "https://s3-ap-southeast-1.amazonaws.com/urnotice/OrbitPage/User/Sumit/WallPost/ee167d15-52bb-4f4f-99fb-038f27eee1dc.jpeg",
"ImageUrl": "https://lh3.googleusercontent.com/-XdUIqdMkCWA/AAAAAAAAAAI/AAAAAAAAAAA/4252rscbv5M/photo.jpg",
"LastName": "Sharma",
"Gender": "NA",
"_id": 23041024,
"_type": "vertex"
}
],
"version": "2.5.0",
"queryTime": 21.94298
}
我正在使用以下查詢獲取特定的用戶帖子:
gv(396800).in('WallPost')。sort {a,b-> b.PostedTime <=> a.PostedTime}。 ()[0..3] .transform {[postInfo:it,commentsInfo:it.in('Comment')。sort {a,b-> b.PostedTime <=> a.PostedTime}。 ()[0..5] .transform {[commentInfo:it,commented by:it.in('Created')]},userInfo:it.in('Created']]}
我得到回應:
{
"success": true,
"results": [
{
"postInfo": {
"PostImage": "",
"Type": "Post",
"PostedByUser": "sumit@thirdeyeinc.com",
"PostedTime": "2016-04-29T11:48:17.5069984Z",
"PostedTimeLong": 635975272975069984,
"PostMessage": "testing new post. on pooja",
"_id": 30729984,
"_type": "vertex"
},
"commentsInfo": [
],
"userInfo": [
{
"Type": "User",
"CreatedTime": "2016-04-20T03:25:30.0753729Z",
"Username": "sumit@thirdeyeinc.com",
"FirstName": "Kunal",
"CoverImageUrl": "https://s3-ap-southeast-1.amazonaws.com/urnotice/OrbitPage/User/Sumit/WallPost/ee167d15-52bb-4f4f-99fb-038f27eee1dc.jpeg",
"ImageUrl": "https://lh3.googleusercontent.com/-XdUIqdMkCWA/AAAAAAAAAAI/AAAAAAAAAAA/4252rscbv5M/photo.jpg",
"LastName": "Sharma",
"Gender": "NA",
"_id": 23041024,
"_type": "vertex"
}
]
}
],
"version": "2.5.0",
"queryTime": 383.759295
}
我想獲取我關注的所有用戶的帖子,並根據post Vertex的PostTime降序排列。 我已經嘗試了很多,但是沒有任何方法可以實現這一目標。
您做對了。 只需首先獲取要關注的所有頂點,然后在所有頂點上應用獲取牆貼邏輯,即可得到所需的結果。
g.v(2304).out('Follow').in('WallPost').sort {
a, b -> b.PostedTime <=> a.PostedTime
}.()[0..3]
.transform {
[
postInfo: it,
commentsInfo: it.in('Comment').sort {
a, b -> b.PostedTime <=> a.PostedTime
}.()[0..5].
transform {
[
commentInfo: it,
commentedBy: it.in('Created')
]
},
userInfo:it.in('Created')
]
}
因此,它將為您提供以下所有帖子的列表,並以PostedTime
降序排列。
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