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Extract and Store Subgraph - Example
Ravee <raveendranat...@...>
Hi,
I'm using Gremlin Server in the JanusGraph package and trying to extract a subgraph.
==>tinkergraph[vertices:11 edges:10]
:> g.V(86056).repeat(__.outE().
or
:> g.V(86056).repeat(__.outE().
Appreciate some help to get around this. Am I missing any configuration or setting to enable subgraph to be written as graphml?
-Ravee
Jason Plurad <plu...@...>
Can you provide more details on what is going wrong? It is a bit hard to debug your situation without any graph data.
I tried this...
$ ./bin/janusgraph.sh start
Forking Cassandra...
Running `nodetool statusthrift`.. OK (returned exit status 0 and printed string "running").
Forking Elasticsearch...
Connecting to Elasticsearch (127.0.0.1:9300).. OK (connected to 127.0.0.1:9300).
Forking Gremlin-Server...
Connecting to Gremlin-Server (127.0.0.1:8182).... OK (connected to 127.0.0.1:8182).
Run gremlin.sh to connect.
$ ./bin/gremlin.sh
gremlin> :remote connect tinkerpop.server conf/remote.yaml
==>Configured localhost/127.0.0.1:8182
gremlin> :remote console
==>All scripts will now be sent to Gremlin Server - [localhost/127.0.0.1:8182] - type ':remote console' to return to local mode
gremlin> GraphOfTheGodsFactory.load(graph)
==>null
gremlin> g.V().has('name', 'pluto').id()
==>4296
gremlin> g.V(4296).repeat( outE().subgraph('sg').inV().simplePath() ).until( outE().count().is(0) ).cap('sg').next().io(IoCore.graphml()).writeGraph('/tmp/mygraph.xml')
==>null
gremlin> new File('/tmp/mygraph.xml').text
==><?xml version='1.0' encoding='UTF-8'?><graphml xmlns="http://graphml.graphdrawing.org/xmlns" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns http://graphml.graphdrawing.org/xmlns/1.1/graphml.xsd">...
Notice I added a simplePath() into the repeat loop to avoid cyclic path looping. Keep in mind, I ran this all on the same machine. If you sent a command to a remote Gremlin Server, the file under /tmp would be located on the remote server, not on your client machine.
-- Jason
On Thursday, March 9, 2017 at 9:16:19 AM UTC-5, Ravee wrote:
Hi,I'm using Gremlin Server in the JanusGraph package and trying to extract a subgraph.:> sg = g.V(86056).repeat(__.outE().subgraph('subGraph').inV()). until(outE().count().is(0)). cap('subGraph').next() ==>tinkergraph[vertices:11 edges:10]or
:> g.V(86056).repeat(__.outE().subgraph('subGraph').inV()). until(outE().count().is(0)). cap('subGraph').next().io( IoCore.graphml()).writeGraph(" /tmp/mygraph.xml") Appreciate some help to get around this. Am I missing any configuration or setting to enable subgraph to be written as graphml?-Ravee