I am unsure on how to use Python to add graphs to JanusGraph
I am having a difficult time using python-gremlin. I am really unsure as to how I can create a graph, create vertices and edges, and then upload it to the database. Could someone provide a guide on how to do these things? I followed the JanusGraph tutorial as well as the Tinkerpop tutorials on how to use gremlin-python but nothing seems to be working for me.
Solution
the key bit to understand with gremlin-python is that you can only use it to query/mutate a graph with the Gremlin language and that graph must be hosted in Gremlin Server (or be compliant with its protocol, like Amazon Neptune). other functions like, "create a graph" or access provider specific functions like creating indices are not possible with the Gremln language and therefore not possible iwth gremlin-python (or other non-JVM programming languages that support Gremln).
if you are wholly new to TinkerPop and JanusGraph (and maybe graph databases themselves), my recommendation would be to not start with JanusGraph. It's natural to want to dive right in to the graph you want to use, but I think it's better to take a slower approach.
i think the learning process is like:
1. do you know the basics of Gremlin? if not, just try to load a subset of your data into a TinkerGraph using Gremlin Console. run some queries over your data and just have an easy success doing that.
2. do you know Gremlin Server? if not, install it locally, connect with Gremlin Console to the default TinkerGraph. maybe configure that TinkerGraph to load the data you established in step (1) above.
3. do you know gremlin-python? if not, make sure you can easily connect to what you set up in step (2) above. write some queries, load some more data, etc.
If you can work all the way through step 3 comfortably then you are likely ready for JanusGraph. I would again suggest starting slowly there and focus on using BerkelyDB as your backend (unless you are already expert at cassandra/hbase). Get that running inside of JanusServer, which is just a specially packaged Gremlin Server, hence step (2).
along the way, folks here are happy to try to help you but i think we'll need some more specifics about what you've tried so far and where you feel you're stuck.
if you are wholly new to TinkerPop and JanusGraph (and maybe graph databases themselves), my recommendation would be to not start with JanusGraph. It's natural to want to dive right in to the graph you want to use, but I think it's better to take a slower approach.
i think the learning process is like:
1. do you know the basics of Gremlin? if not, just try to load a subset of your data into a TinkerGraph using Gremlin Console. run some queries over your data and just have an easy success doing that.
2. do you know Gremlin Server? if not, install it locally, connect with Gremlin Console to the default TinkerGraph. maybe configure that TinkerGraph to load the data you established in step (1) above.
3. do you know gremlin-python? if not, make sure you can easily connect to what you set up in step (2) above. write some queries, load some more data, etc.
If you can work all the way through step 3 comfortably then you are likely ready for JanusGraph. I would again suggest starting slowly there and focus on using BerkelyDB as your backend (unless you are already expert at cassandra/hbase). Get that running inside of JanusServer, which is just a specially packaged Gremlin Server, hence step (2).
along the way, folks here are happy to try to help you but i think we'll need some more specifics about what you've tried so far and where you feel you're stuck.
Apache TinkerPop is an open source graph computing framework and the home of the Gremlin graph query language.
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