Re: [jgrapht-users] No such vertex in Graph error

[J K. <j.k...@gm...>]

Most likely, this is the issue:
https://github.com/jgrapht/jgrapht/wiki/EqualsAndHashCode


On Mon, Jan 8, 2018 at 1:21 AM, Pallavi Karanth <kar...@gm...>
wrote:

> Hi,
>
> Have formed a DefaultDirectedGraph like this:
> public DirectedGraph<OWLEntity, DefaultEdge> OWLGraph = new
> DefaultDirectedGraph<OWLEntity, DefaultEdge>(DefaultEdge.class);
>
> Have added vertices and edges,
> Vertex list is printed as follows:
> System.out.println(OWLGraph.vertexSet());
>
> The list shows the vertex:
> http://www.semanticweb.org/drkm/ontologies/2017/4/untitled-
> ontology-82#Disease
>
> Am constructing all directed paths from the graph as follows:
> AllDirectedPaths allPathsGraph = new AllDirectedPaths(toGraph.OWLGraph);
>
> Here, OWLGraph is the default directed graph,
>
> Next, i call getAllPaths from source vertex http://www.semanticweb.
> org/drkm/ontologies/2017/4/untitled-ontology-82#Food to destination
> vertex:
> http://www.semanticweb.org/drkm/ontologies/2017/4/untitled-
> ontology-82#Disease
>
> The stack trace shows the error as:
> java.lang.IllegalArgumentException: no such vertex in graph:
> http://www.semanticweb.org/drkm/ontologies/2017/4/unti
> tled-ontology-82#Disease
> at org.jgrapht.graph.AbstractGraph.assertVertexExist(AbstractGr
> aph.java:132)
> at org.jgrapht.graph.AbstractBaseGraph.incomingEdgesOf(Abstract
> BaseGraph.java:365)
> at org.jgrapht.alg.AllDirectedPaths.edgeMinDistancesBackwards(A
> llDirectedPaths.java:158)
> at org.jgrapht.alg.AllDirectedPaths.getAllPaths(AllDirectedPaths.java:105)
> at org.jgrapht.alg.AllDirectedPaths.getAllPaths(AllDirectedPaths.java:69)
> at com.mycompany.semanticdistance.SemanticDistance.SemanticDist
> ance(SemanticDistance.java:161)
> at com.mycompany.semanticdistance.SemanticDistance.
> loadOntology(SemanticDistance.java:136)
> at com.mycompany.semanticdistance.SemanticDistance.main(Semanti
> cDistance.java:84)
>
> May i know how to resolve this?
> Kindly help.
> Thanks much in advance
>
> --
> Regs, Pallavi
>
> Linkedin Profile : http://in.linkedin.com/pub/pallavi-karanth/b/b71/26b
>
> “Your time is limited, don’t waste it living someone else’s life. Don’t be
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> somehow already know what you truly want to become. Everything else is
> secondary.”
>
> -- Steve Jobs
>
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