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ShiftLeftSecurity / tinkergraph-gremlin

Apache License 2.0
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SpecializedTinkerEdge support to delete edge? #40

Open zhuguocheng29 opened 4 years ago

zhuguocheng29 commented 4 years ago

I use the query to delete "Action" edge as below: g.V().outE("Action").drop().iterate();

However it occurs some error. There are stack trace:

java.util.ConcurrentModificationException
        at java.util.ArrayList$Itr.next(ArrayList.java:860)
        at org.apache.tinkerpop.gremlin.util.iterator.MultiIterator.next(MultiIterator.java:72)
        at org.apache.tinkerpop.gremlin.process.traversal.step.map.FlatMapStep.processNextStart(FlatMapStep.java:45)
        at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143)
        at org.apache.tinkerpop.gremlin.process.traversal.step.util.ExpandableStepIterator.next(ExpandableStepIterator.java:50)
        at org.apache.tinkerpop.gremlin.process.traversal.step.filter.FilterStep.processNextStart(FilterStep.java:37)
        at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143)
        at org.apache.tinkerpop.gremlin.process.traversal.step.util.ExpandableStepIterator.next(ExpandableStepIterator.java:50)
        at org.apache.tinkerpop.gremlin.process.traversal.step.filter.FilterStep.processNextStart(FilterStep.java:37)
        at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.next(AbstractStep.java:128)
        at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.next(AbstractStep.java:38)
        at org.apache.tinkerpop.gremlin.process.traversal.Traversal$-CC.$default$iterate(Traversal.java:203)
        at org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal$-CC.$default$iterate(GraphTraversal.java:2704)
        at org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal$Admin$-CC.$default$iterate(GraphTraversal.java:179)
        at org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.DefaultGraphTraversal.iterate(DefaultGraphTraversal.java:48)
mpollmeier commented 4 years ago

yup that's currently not supported, and we're making some fundamental changes at the moment, so I'd recommend to not base any work on this at the moment. we'll fork off a version of this that can live on it's own.

zhuguocheng29 commented 4 years ago

@mpollmeier But we urgently need this feature now. Can I add it myself? Could you tell me where to add this?

zhuguocheng29 commented 4 years ago

@mpollmeier Could you tell me when you support the feature of edge deletion and withComputer methods?

mpollmeier commented 4 years ago

You could fork this repo from version v3.3.4.18 https://github.com/ShiftLeftSecurity/tinkergraph-gremlin/releases/tag/v3.3.4.18 and add the feature yourself.