[TINKERPOP-1935] GraphML Export Fails with List Cardinality

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Won't Do
• Affects Version/s: 3.3.2
• Component/s: io
• Assignee: Unassigned
• Reporter: James Baker
• Created: 10/Apr/18 09:33
• Updated: 03/Jun/19 20:41
• Resolved: 23/Apr/18 18:17

Description

Exporting to GraphML throws an error if there are nodes with a List Cardinality and multiple values set for a property. This works fine when exporting to GraphSON.

The exception thrown is:

java.lang.IllegalStateException: Multiple properties exist for the provided key, use Vertex.properties(name)at org.apache.tinkerpop.gremlin.structure.Vertex$Exceptions.multiplePropertiesExistForProvidedKey(Vertex.java:179)
{{ at org.apache.tinkerpop.gremlin.tinkergraph.structure.TinkerVertex.property(TinkerVertex.java:75)}}
{{ at org.apache.tinkerpop.gremlin.structure.io.graphml.GraphMLWriter.writeVertices(GraphMLWriter.java:315)}}
{{ at org.apache.tinkerpop.gremlin.structure.io.graphml.GraphMLWriter.writeGraph(GraphMLWriter.java:193)}}