David Beaudet created JENA-2190:
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Summary: JSON1.1 Parsing Error: Cannot cast
org.glassfish.json.JsonStringImpl to jakarta.json.JsonObject
Key: JENA-2190
URL: https://issues.apache.org/jira/browse/JENA-2190
Project: Apache Jena
Issue Type: Bug
Components: JSON-LD
Affects Versions: Jena 4.2.0
Reporter: David Beaudet
Attachments: linkedArtSampleData.jsonld11
When attempting to load a dataset formatted in JSON-LD 1.1 with the following
code and data, I'm encountering the following exception with version 4.2.0
Data corresponding to contents of file path in Java snippet:
{quote}{{{\{ "@context": "https://linked.art/ns/v1/linked-art.json";, "id":
"https://www.nga.gov/collection/art-object-page.50724.html";, "type":
"HumanMadeObject"}}}
{quote}
and contents of the @context can be loaded from its URL.
Java Snippet:
{quote}InputStream in = Files.newInputStream(path);{quote}
{quote}OntModel blankModel = ModelFactory.createOntologyModel(
OntModelSpec.RDFS_MEM );{quote}
{quote}RDFParser.source(in) .forceLang(Lang.JSONLD11)
.parse(emptyModel.getGraph());{quote}
Exception:
{quote}{{2021-11-01 15:17:17 WARN LangJSONLD11:58 - Unexpected problem while
extracting prefixes: Cannot cast org.glassfish.json.JsonStringImpl to
jakarta.json.JsonObject2021-11-01 15:17:17 WARN LangJSONLD11:58 - Unexpected
problem while extracting prefixes: Cannot cast
org.glassfish.json.JsonStringImpl to
jakarta.json.JsonObjectjava.lang.ClassCastException: Cannot cast
org.glassfish.json.JsonStringImpl to jakarta.json.JsonObject at
java.base/java.lang.Class.cast(Class.java:3818) at
jakarta.json.JsonValue.asJsonObject(JsonValue.java:117) at
org.apache.jena.riot.lang.LangJSONLD11.extractPrefixes(LangJSONLD11.java:97) at
org.apache.jena.riot.lang.LangJSONLD11.read(LangJSONLD11.java:75) at
org.apache.jena.riot.lang.LangJSONLD11.read(LangJSONLD11.java:55) at
org.apache.jena.riot.RDFParser.read(RDFParser.java:358) at
org.apache.jena.riot.RDFParser.parseNotUri(RDFParser.java:348) at
org.apache.jena.riot.RDFParser.parse(RDFParser.java:295) at
org.apache.jena.riot.RDFParser.parse(RDFParser.java:241) at
org.apache.jena.riot.RDFParserBuilder.parse(RDFParserBuilder.java:562) at
test.TestJena.main(TestJena.java:175)}}{quote}
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