GitHub user okram opened a pull request:
https://github.com/apache/incubator-tinkerpop/pull/298
TINKERPOP-1284: StarGraph does not handle self-loops correctly.
https://issues.apache.org/jira/browse/TINKERPOP-1284
```
gremlin> graph = TinkerGraph.open()
==>tinkergraph[vertices:0 edges:0]
gremlin>
gremlin> v = graph.addVertex()
==>v[0]
gremlin> v.addEdge("self",v)
==>e[1][0-self->0]
gremlin> g = graph.traversal()
==>graphtraversalsource[tinkergraph[vertices:1 edges:1], standard]
gremlin> g.V(0l)
==>v[0]
gremlin> g.V(0l).bothE()
==>e[1][0-self->0]
==>e[1][0-self->0]
gremlin> g.V(0l).outE()
==>e[1][0-self->0]
gremlin> g.V(0l).inE()
==>e[1][0-self->0]
gremlin>
gremlin>
gremlin> starGraph =
org.apache.tinkerpop.gremlin.structure.util.star.StarGraph.of(v)
==>stargraph[starOf:v[0]]
gremlin> sg = starGraph.traversal()
==>graphtraversalsource[stargraph[starOf:v[0]], standard]
gremlin> sg.V(0l)
==>v[0]
gremlin> sg.V(0l).bothE()
==>e[1][0-self->0]
==>e[1][0-self->0]
gremlin> sg.V(0l).outE()
==>e[1][0-self->0]
gremlin> sg.V(0l).inE()
==>e[1][0-self->0]
gremlin>
gremlin> // TADA!
==>true
gremlin>
```
`mvn clean install` and Spark integration tests.
VOTE +1
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/apache/incubator-tinkerpop TINKERPOP-1284
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-tinkerpop/pull/298.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #298
----
commit 0563ec36bb823d617acde6a15217c2b61471408d
Author: Marko A. Rodriguez <okramma...@gmail.com>
Date: 2016-04-29T15:33:29Z
fixed a self-loop bug in StarGraph. Added
StarGraphTest.shouldHandleSelfLoops() to ensure correct behavior.
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