Jena has both JSON 1.0, provided by jsonld-java, and JSON-LD 1.1,
provided by Titanium.
What should the default settings be?
For parsing that means what is bound to "application/ld+json" and file
extension .jsonld.
For writing, it means what is setup for Lang.JSONLD.
This is two decisions - parsing and writing can be different.
But.
It is not so simple:
1/ For Java11, the default settings for java.net.http can't contact
schema.org.
This is not a problem with Titanium.
See example code that uses only the plain java.net.http package.
https://issues.apache.org/jira/browse/JENA-2306
HTTP/2 works for java 17.0.2, but does not work for java 11.0.14.
And that means { "@context": "https://schema.org/"; } does not work.
(http: redirects to that as well)
This _may_ be:
https://bugs.openjdk.java.net/browse/JDK-8218546
in which case it is fixed in java 11.0.15.
In my testing, it wasn't just google HTTP/2 sites.
** Please try the example code and report the Java version and what happens.
2/ Jena is writing JSON-LD 1.1 without much in the way of transformation
nor creating a @context from the RDF data. It prints full URIs; numbers
aren't abbreviated etc etc. so it not very pretty.
Or should Jena only write some plain output and expect the application
to further transform it?
Even for this, it needs some improvement so that there is a @context to
work from.
** Can you contribute here? The code is in JsonLD11Writer.java.
https://issues.apache.org/jira/browse/JENA-2153
Andy
