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https://issues.apache.org/jira/browse/JENA-632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14255033#comment-14255033
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Bruno P. Kinoshita commented on JENA-632:
-----------------------------------------
Hi,
I've been trying to write a patch for this, but before having a definitive
patch to submit I'll need to write a bunch of things :)
At the moment what I managed to do was to understand how the SPARQL and ARQ
grammars are generated (with JavaCC) and I've updated them (in master.jj, which
creates sparql_11.jj, arq.jj and other files via grammar executable).
You can check my work-in-progress grammar here
https://gist.github.com/kinow/875851f7379abfcb4f13
I haven't messed up with compiler generators and grammars in a while, last time
was in 2010 but I used Antlr. So there are probably parts that can be enhanced
(like [this
part|https://gist.github.com/kinow/875851f7379abfcb4f13#file-gistfile1-java-L350]
where I couldn't make JavaCC recognize a <COMMA> token).
Even though the grammar seems to be working, and I'm collecting the "variable":
?variable in a java.util.Map in the Query object, I still have to update SPARQL
and Fuseki to return JSON.
> Generate JSON from SPARQL directly.
> -----------------------------------
>
> Key: JENA-632
> URL: https://issues.apache.org/jira/browse/JENA-632
> Project: Apache Jena
> Issue Type: Improvement
> Components: ARQ, Fuseki
> Reporter: Andy Seaborne
> Priority: Minor
> Labels: gsoc, java, javacc
>
> The capability to generate JSON directly from a SPARQL (or extended SPARQL)
> query would enable the creation of JSON data API over published linked data.
> This project would cover:
> # Design and publication of a design.
> # Refinement of design based on community feed
> # Implementation, including testing.
> # Refinement of implementation based on community feed
> Skills required: Java, some parser work, design and discussion with the user
> community, basic understanding of HTTP and content negotiation.
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