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https://issues.apache.org/jira/browse/JENA-632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14317408#comment-14317408
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Bruno P. Kinoshita commented on JENA-632:
-----------------------------------------
Using the {{books.ttl}} example dataset, and the following query:
{code:title=query-sparql.sparql|borderStyle=solid}
PREFIX purl: <http://purl.org/dc/elements/1.1/>
PREFIX w3: <http://www.w3.org/2001/vcard-rdf/3.0#>
PREFIX : <http://example.org/book/>
SELECT ?author ?title
WHERE
{
?book purl:creator ?author .
?book purl:title ?title .
FILTER (?author = 'J.K. Rowling')
}
{code}
Produces the following result set.
{code}
----------------------------------------------------------------
| author | title |
================================================================
| "J.K. Rowling" | "Harry Potter and the Order of the Phoenix" |
| "J.K. Rowling" | "Harry Potter and the Philosopher's Stone" |
| "J.K. Rowling" | "Harry Potter and the Half-Blood Prince" |
| "J.K. Rowling" | "Harry Potter and the Deathly Hallows" |
----------------------------------------------------------------
{code}
And the JSON query.
{code:title=query-json.sparql|borderStyle=solid}
PREFIX purl: <http://purl.org/dc/elements/1.1/>
PREFIX w3: <http://www.w3.org/2001/vcard-rdf/3.0#>
PREFIX : <http://example.org/book/>
JSON {
"author": ?author,
"title": ?title
}
WHERE
{
?book purl:creator ?author .
?book purl:title ?title .
FILTER (?author = 'J.K. Rowling')
}
{code}
Produces:
{code}
[ {
"author" : "J.K. Rowling" ,
"title" : "Harry Potter and the Order of the Phoenix"
} ,
{
"author" : "J.K. Rowling" ,
"title" : "Harry Potter and the Philosopher's Stone"
} ,
{
"author" : "J.K. Rowling" ,
"title" : "Harry Potter and the Half-Blood Prince"
} ,
{
"author" : "J.K. Rowling" ,
"title" : "Harry Potter and the Deathly Hallows"
}
]
{code}
How are we supposed to handle this kind of data set in JSON queries?
> 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: 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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