subgraphs and merges

[Sergio Fernández]

Hi,

I'm new in TinkerPop and Gremlin, although I have large experience with graph databases, particularly in the RDF paradigm,

I'd like to see if I could use this stack to provide means of getting a subgraph, extended it and then merge it back. Reading the documentation Traversal could be a good foundation for that in combination with Partitions http://thinkaurelius.com/2012/04/06/multitenant-graph-applications/ 

Does anybody tried to address a similar feature? Comments/advice would be very welcomed in this initial phase.

Cheers,

P.S.: why this is list not yet migrated to Apache?

[Stephen Mallette]

You have multiple options for subgraphing and PartitionStrategy is one:

http://tinkerpop.incubator.apache.org/docs/3.0.1-incubating/#_partitionstrategy

It's sibling SubgraphStrategy is another:

http://tinkerpop.incubator.apache.org/docs/3.0.1-incubating/#_subgraphstrategy

and of course you can pop off a subgraph by way of Traversal with the SubgraphStep:

http://tinkerpop.incubator.apache.org/docs/3.0.1-incubating/#subgraph-step

What we don't have built into the stack is a way to merge changes in the subgraph back into the parent graph.  It's been brought up a few times on the mailing list i think, but no one has offered any ideas for how that might be done.  

> why this is list not yet migrated to Apache?

This list has been around for years and as such had a large body of knowledge and a large number of subscribers.  Apache was ok with us maintaining the user list here.  The development discussions however are on Apache infrastructure: 

http://mail-archives.apache.org/mod_mbox/incubator-tinkerpop-dev/

Please feel free to join.....

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[Sergio Fernández]

Thanks, Stephen, that documentation is really useful, at least for the first bit. I'll try to come out with a solution for the merging, although it probably has to ad-hoc for my concrete problem.