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https://issues.apache.org/jira/browse/JENA-2034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Seaborne closed JENA-2034.
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> adding GraphNode (N3 formula) to Model (ARQInternalErrorException)
> ------------------------------------------------------------------
>
> Key: JENA-2034
> URL: https://issues.apache.org/jira/browse/JENA-2034
> Project: Apache Jena
> Issue Type: Question
> Components: ARQ, Jena, RDF API
> Affects Versions: Jena 3.17.0
> Environment: * Ubuntu 20.04
> * Using Eclipse EE
> * Project is running a Tomcat 9 server
> Reporter: Calum Mackervoy
> Priority: Minor
>
> I'm attempting to add a Graph node to a Model (N3 formula)
> The output should be roughly like the below:
> ```
> <http://localhost:8080/patches/#cf0ba48fa8b0421c8b025c3ea6b41a4f>
> a <http://www.w3.org/ns/solid/terms#Patch> ;
> <http://www.w3.org/ns/solid/terms#patches>
> <http://example.com/#me> ;
> <http://www.w3.org/ns/solid/terms#inserts> \{ http://example.com/#me
> http://example.com/#property http://example.com/#resource } .
> ```
> Note that the `#inserts` property here is a "GraphNode" or N3 formula, I'm
> modelling a graph of the triples to write when a `Task` is complete
> I tried the code below:
> ```
> Model out = ModelFactory.createDefaultModel();
> out.add(endState, SolidTerms.inserts,
> out.asRDFNode(NodeFactory.createGraphNode(inserts.getGraph())));
> ```
> but this throws `[org.apache.jena.sparql.ARQInternalErrorException: Unknown
> node type: \{http://example.com/#me @http://example.com/#property
> http://example.com/#resource}]`
> I've tried many other ways of putting the `Graph` in the model with no
> success, posting this one because it was my first and I think the most
> rational. I think it's a bug unless Jena just doesn't support the GraphNode
> type in `RDFNode` ? I spent a few hours searching the documentation and the
> web before opening this issue
> The `@` in the error output puzzled me a bit, but I checked that it's not
> included in my property definition, it's maybe added in by the
> `createGraphNode` or the error serialization
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