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

[Pallavi K. <kar...@gm...>]

Changed vertex type to a class which implements equals and hashcode,
Still getting the same error,
May I know how to resolve this?
Thanks much..

On Mon, Jan 8, 2018 at 2:21 PM, J Kinable <j.k...@gm...> wrote:

> 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-o
>> ntology-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-o
>> ntology-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(AllDirectedPath
>> s.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 trapped by dogma, which is living the result of other people’s thinking.
>> Don’t let the noise of other opinions drown your own inner voice. And most
>> important, have the courage to follow your heart and intuition, they
>> somehow already know what you truly want to become. Everything else is
>> secondary.”
>>
>> -- Steve Jobs
>>
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>>
>


-- 
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
trapped by dogma, which is living the result of other people’s thinking.
Don’t let the noise of other opinions drown your own inner voice. And most
important, have the courage to follow your heart and intuition, they
somehow already know what you truly want to become. Everything else is
secondary.”

-- Steve Jobs