Display SPARQL response in HTML in the browser

[Frans Knibbe <fr...@geodan.nl>]

Hello again,

Is there a way to let Marmotta respond to a SPARQL request that I open with
a web browser with HTML that can be directly displayed in the web browser?

I am trying something like

{BASE}/marmotta/sparql?query=<my URL-encoded query>

The response is not rendered in the browser window, but downloaded as a
file to disk. The relevant response headers seem to be:

Content-Type: application/sparql-results+xml
Content-Disposition: attachment; filename="tuple.srx"

I think the &output parameter for the SPARQL websource can be used to
specify a response format, so I tried

{BASE}/marmotta/sparql?query=<my URL-encoded query>&output=html

Still the response is downloaded as a file, not displayed in the browser.
The relevant response headers seem to be:

Content-Type: text/html
Content-Disposition: attachment; filename="tuple.html"

I guess the problem is the Content-Disposition response header, which says
the response is an attachment.

Is it possible to change something to make Marmotta return a response that
can be directly displayed in the browsers?

Regards,
Frans

Re: Display SPARQL response in HTML in the browser

[Sergio Fernández <wi...@apache.org>]

His Frans,

I reported your issue to our jira:
https://issues.apache.org/jira/browse/MARMOTTA-656

I quickly found the problem, and develop branch is already patched to work
as expected.

So for now this should work on 3.4.0-SNAPSHOT:
http://localhost:8080/sparql/select?query=SELECT%20*%20WHERE%20%7B%0A%20%20%3Fsubject%20%3Fproperty%20%3Fobject%0A%7D%0ALIMIT%2010

Thanks for the bug report.

Cheers,


On Fri, Sep 9, 2016 at 4:46 PM, Frans Knibbe <fr...@geodan.nl> wrote:

> Hello again,
>
> Is there a way to let Marmotta respond to a SPARQL request that I open
> with a web browser with HTML that can be directly displayed in the web
> browser?
>
> I am trying something like
>
> {BASE}/marmotta/sparql?query=<my URL-encoded query>
>
> The response is not rendered in the browser window, but downloaded as a
> file to disk. The relevant response headers seem to be:
>
> Content-Type: application/sparql-results+xml
> Content-Disposition: attachment; filename="tuple.srx"
>
> I think the &output parameter for the SPARQL websource can be used to
> specify a response format, so I tried
>
> {BASE}/marmotta/sparql?query=<my URL-encoded query>&output=html
>
> Still the response is downloaded as a file, not displayed in the browser.
> The relevant response headers seem to be:
>
> Content-Type: text/html
> Content-Disposition: attachment; filename="tuple.html"
>
> I guess the problem is the Content-Disposition response header, which says
> the response is an attachment.
>
> Is it possible to change something to make Marmotta return a response that
> can be directly displayed in the browsers?
>
> Regards,
> Frans
>



-- 
Sergio Fernández
Partner Technology Manager
Redlink GmbH
m: +43 6602747925
e: sergio.fernandez@redlink.co
w: http://redlink.co