[jira] [Created] (TINKERPOP-1036) Support self-looping edges in IO

["stephen mallette (JIRA)" <ji...@apache.org>]

stephen mallette created TINKERPOP-1036:
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             Summary: Support self-looping edges in IO
                 Key: TINKERPOP-1036
                 URL: https://issues.apache.org/jira/browse/TINKERPOP-1036
             Project: TinkerPop
          Issue Type: Bug
          Components: io
    Affects Versions: 3.1.0-incubating
            Reporter: stephen mallette
            Assignee: stephen mallette
             Fix For: 3.1.1-incubating


Seems like GraphSON is having trouble with self-loops.  Not sure about other IO at this time.

{code}
gremlin> a = TinkerGraph.open()
==>tinkergraph[vertices:0 edges:0]
gremlin> v1 = a.addVertex()
==>v[0]
gremlin> v2 = a.addVertex()
==>v[1]
gremlin> control = v1.addEdge("CONTROL", v2)
==>e[2][0-CONTROL->1]
gremlin> selfLoop = v1.addEdge("SELF-LOOP", v1)
==>e[3][0-SELF-LOOP->0]
gremlin> a.io(IoCore.graphson()).writeGraph("test.gson")
==>null
gremlin> b = TinkerGraph.open()
==>tinkergraph[vertices:0 edges:0]
gremlin> b.io(IoCore.graphson()).readGraph("test.gson")
==>null
gremlin> b.traversal().E()
==>e[2][0-CONTROL->1]
{code}

with graphson of:

{code}
{"id":0,"label":"vertex","inE":{"SELF-LOOP":[{"id":3,"outV":0}]},"outE":{"CONTROL":[{"id":2,"inV":1}]}}
{"id":1,"label":"vertex","inE":{"CONTROL":[{"id":2,"outV":0}]}}
{code}



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