[jira] [Updated] (JENA-2034) adding GraphNode (N3 formula) to Model (ARQInternalErrorException)

["Andy Seaborne (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/JENA-2034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andy Seaborne updated JENA-2034:
--------------------------------
    Issue Type: Question  (was: Bug)

> 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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