Does this work for nested objects as well? For example to select a list of
books by authors:
JSON [
{
"author": ?author
"books" [ "title": ?title ]
}
]
WHERE
{
...
}
to produce
[
{
"author": "author 1",
"books": [ "book1", "book2", ... ]
},
{
"author": "author 2",
"books": [ "book1", "book2", ... ]
},
{
"author": "author 3",
"books": [ "book1", "book2", ... ]
},
....
]
Sent: Monday, July 02, 2018 at 2:21 PM
From: "Andy Seaborne" <a...@apache.org>
To: users@jena.apache.org
Subject: Re: [ANN] Apache Jena 3.8.0
Jena 3.8.0 introduces a new SPARQL extension to easily produce JSON
output for further JSON-centric handling.
Example:
PREFIX purl: <http://purl.org/dc/elements/1.1/>
JSON {
"author": ?author,
"title": ?title
}
WHERE
{
?book purl:creator ?author .
?book purl:title ?title .
FILTER regex(?author,'Rowling','i')
}
to produce:
[
{
"book": "http://example.org/book/book6[http://example.org/book/book6]";,
"title": "Harry Potter and the Half-Blood Prince"
},
{
"book": "http://example.org/book/book7[http://example.org/book/book7]";,
"title": "Harry Potter and the Deathly Hallows"
},
]
For more information:
https://jena.apache.org/documentation/query/generate-json-from-sparql.html[https://jena.apache.org/documentation/query/generate-json-from-sparql.html]
Andy
