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https://issues.apache.org/jira/browse/JENA-1864?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17070449#comment-17070449
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Andy Seaborne commented on JENA-1864:
-------------------------------------
Hi [~virresh]
The PR looks fine as-is.
The issue of whether to print "base" or not can be separated out - it affects
the pretty write as well. There is also a question of style : "BASE" or "@base"
("PREFIX"/"@prefix" is already switchable).
{{WriterStreamRDFBase}} can acquire a {{Context}} - I've done that my copy
(small change, but quite a files altered! The wonders of Eclipse signature
change!) and I can PR that after PR #179 is merged if that works for you.
So get this PR into the code base as-is because it fixes the presenting problem
of no base, andhence unstable RDF output, and do the deeper cleaning of
`WriterStreamRDFBase` and generally refactoring code.
> Inconsistent Turtle serializers
> -------------------------------
>
> Key: JENA-1864
> URL: https://issues.apache.org/jira/browse/JENA-1864
> Project: Apache Jena
> Issue Type: Bug
> Affects Versions: Jena 3.14.0
> Environment: My Configuration:
> OS: Ubuntu 18.04
> java version "1.8.0_111"
> javac 1.8.0_242
> Jena Version: 3.14.0
> Reporter: Viresh Gupta
> Priority: Major
>
> The turtle serializers provided for default model in Jena don't work as
> expected. Moreover, the docs lack on which methods to use in which case.
> I found the following methods that seem to work:
> # model.write() (A.ttl)
> # RDFWriter (B.ttl)
> # RDFDataMgr (C.ttl)
> I'm providing a minimum working example along with the outputs using a sample
> turtle file from Turtle specifications (ggoblin.ttl – Example 1 from
> [https://www.w3.org/TR/turtle/|https://www.w3.org/TR/turtle/#sec-examples])
> in a gist: [https://gist.github.com/virresh/5a28dc3adb1f40bf9070e2cb4ecfa90d]
>
> The issue:
> # "@base" directive is not printed when writing with the TURTLE_BLOCK and
> TURTLE_FLAT format in RDFWriter
> # There is no way to provide "@base" inside the RDFDataMgr. Expected output
> was something like <#spiderman>
> # RDFDataMgr doesn't respect the prefix supplied, e.g I manually added
> prefix "@base", however, the output (C.ttl) still converts the relative
> entities into their absolute form, whereas I expected it to do something like
> base:#spiderman at the very least
>
> I'll be happy to help with the issue if it doesn't fall into the "wont-fix"
> category.
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