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From "Hasan (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (CLEREZZA-415) RDF/JSON Parser can not parse triples with blank node objects when the blank node does not appear as subject.
Date Wed, 23 Feb 2011 03:31:38 GMT

     [ https://issues.apache.org/jira/browse/CLEREZZA-415?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hasan reassigned CLEREZZA-415:
------------------------------

    Assignee: Hasan

> RDF/JSON Parser can not parse triples with blank node objects when the blank node does
not appear as subject.
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: CLEREZZA-415
>                 URL: https://issues.apache.org/jira/browse/CLEREZZA-415
>             Project: Clerezza
>          Issue Type: Bug
>            Reporter: Daniel Spicar
>            Assignee: Hasan
>            Priority: Minor
>
> Triples of the form (N-Triples syntax):
> <http://example.org/res> <http://example.org/prop> _:a .
> can not be parsed. Error message:
> java.lang.IllegalArgumentException: Invalid object: null
> 	at org.apache.clerezza.rdf.core.impl.TripleImpl.<init>(TripleImpl.java:50)
> 	at org.apache.clerezza.rdf.rdfjson.parser.RdfJsonParsingProvider.addValuesToGraph(RdfJsonParsingProvider.java:130)
> While such triples may not be very interesting semantically, they are nevertheless valid
RDF.
> If there is a triple of the form (the blank node appears as the subject)
> _:a <http://example.org/prop2> "Hello" .
> in the graph the parsing succeeds. 

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