tinkerpop

问题 I am trying to populate a graph running in gremlin server with data from my SQL database. I would like to read the data from the database, iterate over the results and add them to the graph. This is done in a c# program so I am using Gremlin.NET bytecode. I CAN do this by doing the c# equivalent of the example found here: https://github.com/krlawrence/graph/blob/master/sample-code/RemoteAddBatch.java And the c# equivalent of the answer found here: Adding multiple vertices, changing one

问题 If i have a pre-run route from the shortestPath which is returned as a list of vertex, how can i then re-run that on a graph with the same set of vertices, to return the edges which it has used. i.e. PATH = (V(1), V(2), V(3), V(4), V(5), V(6)), how would the command look to replay that path on a new graph with the same vertices, returning the edges, which contain different properties. So to confirm i need to input this explicit Path to return the edges? 回答1: If I knew my path was [v[1],v[4],v

问题 Just started out with Tinkerpop and Janusgraph, and I'm trying to figure this out based on the documentation. I have three datasets, each containing about 20 milions rows (csv files) There is a specific model in which the variables and rows need to be connected, e.g. what are vertices, what are labels, what are edges, etc. After having everything in a graph, I'd like to of course use some basic Gremlin to see how well the model works. But first I need a way to get the data into Janusgraph.

问题 I am calling JanusGraph remote, which returns ReferenceVertex by default. In order to retrieve properties as well, I use valueMap(), which works well for simple queries. However, in my use case I need to build a join, which works well based on ReferenceVertex as follows: // select t1.table2_ID, t2.table2_ID from table1 as t1 inner join table2 as t2 on t1.table2_ID = t2.table2_ID GraphTraversal<?, ?> t1 = __.start().as("table1").out("relatesTo").hasLabel("table2").as("table2"); GraphTraversal<

问题 I struggled with this for hours before finding out that you have to use from_ instead of from when using gremlin javascript. After digging through the source code I finally found out that the code is using from_ instead of from (see code). Since I'm a newbie this comes off as strange because its counterpart to is still to (and not to_ , see code here) I googled everywhere but couldn't find the reason why this works this way, and feel uneasy about using the underscore version since most of the

问题 I Am trying to convert the following graphSon Format into a graph instance using the follwing command graph.io(IoCore.graphson()).reader().create().readGraph(stream, graph); But while running converting the GRaphSON into graph instance given below {"id":0, "label":"buyer", "outE": {"email_is": [{"id":0,"inV":1, "properties":{"weight":1} } ]} ,"properties": {"buyer": [{ "id":0,"value":"buyer0" }] ,"age": [{ "id":1,"value":10}] }} {"id":1, "label":"email", "inE": { "email_is": [{"id":1,"outV":0

问题 My vertice properties partly contain objects like e.g. a File object. When searching with "has" I would like to search for Files by path. I think some kind of text comparison predicates that would do the "toString()" conversion might be helpful here. Are there any standard predicates like this in gremlin/tinkerpop or do I have to implement these my self? I found two related questions in stackoverflow: Gremlin.net textContains equivalent How Gremlin query same sql like for search feature And

问题 I need some help to be confirm my choice... and to learn if you can give me some information. My storage database is TitanDb with Cassandra. I have a very large graph. My goal is to use Mllib on the graph latter. My first idea : use Titan with GraphX but I did not found anything or in development in progress... TinkerPop is not ready yet. So I have a look to Giraph. TinkerPop, Titan can communique with Rexster from TinkerPop. My question is : What are the benefit to use Giraph ? Gremlin seems

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 5 years ago . I need to learn Gremlin etc. and possibly use it within a public facing production-ready system I'm working on. As any release of my system is, at a minimum, 6 months away (say end Q1 2015), should I switch directly to the new, still pre-release, Tinkerpop 3 implementation,