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Cayley: How do insert vertices and edges into graph using Cayley-Gremlin code?


Cayley: How do insert vertices and edges into graph using Cayley-Gremlin code?

By : user2950201
Date : November 17 2020, 11:52 AM
I hope this helps you . gremlin in cayley is only for traversals. https://github.com/google/cayley/blob/master/docs/GremlinAPI.md is the complete gremlin API for cayley.
use http to add data: https://github.com/google/cayley/blob/master/docs/HTTP.md#apiv1write
code :


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how to exclude vertices based on edges using gremlin/IBM graph

how to exclude vertices based on edges using gremlin/IBM graph


By : Bent Inge Johansen
Date : March 29 2020, 07:55 AM
this will help I'm working with IBM graph and using gremlin to try to filter certain vertices. My edges have two labels required and optional. this the situation: , Assuming this is your graph:
code :
gremlin> g.addV().property(id,1).as('1').
......1>   addV().property(id,2).as('2').
......2>   addV().property(id,3).as('3').
......3>   addV().property(id,4).as('4').
......4>   addV().property(id,5).as('5').
......5>   addV().property(id,6).as('6').
......6>   addE('supplies').from('1').to('2').
......7>   addE('supplies').from('1').to('3').
......8>   addE('required').from('2').to('4').
......9>   addE('required').from('3').to('4').
.....10>   addE('required').from('3').to('5').
.....11>   addE('required').from('6').to('5').iterate()
gremlin> g.V(1).
......1>   out().
......2>   outE().
......3>   aggregate('edges').
......4>   inV().
......5>   where(inE('required').
......6>         where(not(within('edges'))).
......7>         count().is(eq(0))).
......8>   dedup()  
==>v[4]
gremlin> g.V(1).
......1>   out().
......2>   outE().
......3>   aggregate('edges').
......4>   inV().
......5>   where(inE('required').
......6>         where(without('edges')).
......7>         count().is(0)).
......8>   dedup() 
==>v[4]
gremlin> g.V(1).
......1>   out().
......2>   outE().
......3>   aggregate('edges').
......4>   inV().
......5>   not(inE('required').
......6>       where(without('edges'))).
......7>   dedup()
==>v[4]
How to load an json api in cayley graph db

How to load an json api in cayley graph db


By : user3085724
Date : March 29 2020, 07:55 AM
This might help you Unfortunately, Cayley cannot import JSON data directly by design.
The main reason is that it has no way of knowing which values in JSON are node IDs and which are regular string values.
Gremlin Cayley query: How to have a multi leveled query

Gremlin Cayley query: How to have a multi leveled query


By : Koshux
Date : March 29 2020, 07:55 AM
this will help I'm not sure if you still need this, but I'm going to write anyway as I had to learn the same thing from almost non-existent example based documentation on Cayley.
To traverse a graph, Cayley has a .FollowRecursive() method defined in the API. The method .FollowRecursive uses something called a Morphism to figure out how to follow the path recursively. From my understanding, it seems like an abstract path object that encodes the recursive case (kind-of like your getLikes function (but not quite)). Here's an example of Gizmo query that should work for complete graph/chain traversal.
How to read linked-nodes recursively in Cayley Graph Database?

How to read linked-nodes recursively in Cayley Graph Database?


By : 施劲松
Date : March 29 2020, 07:55 AM
will be helpful for those in need As @Bruno pointed out in his answer, the equivalent of * in Gremlin is FollowRecursive().
Cayley : How to put the limit/depth to show the graph hierarchy in cayley?

Cayley : How to put the limit/depth to show the graph hierarchy in cayley?


By : Harish Garg
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , You can limit the depth by passing the max depth as second parameter to the FollowRecursive function:
code :
g.V("B").FollowRecursive(path,2 )
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