On 19/03/2020 09:37, Marco Neumann wrote:
thank you Claus, there is obviously much more in the Jena-extensions
(SmartDataAnalytics / jena-sparql-api).

if you want to contribute your work to the Jena project you will have to
follow up with Andy directly.

https://github.com/apache/jena/blob/master/CONTRIBUTING.md

But I am not sure this is necessary at the
moment since you already provide the code in the public domain conveniently
as an extension / add-on to the Jena project, which I think is great as is
for now. Over time we might want to learn from your work and add aspects to
the overall core Jena project I would think.

It would be great if we could schedule a zoom session in order to give us
an overview of the "SmartDataAnalytics / jena-sparql-api" extensions

could you prepare such a presentation in the coming days?

best,
Marco



On Wed, Mar 18, 2020 at 3:34 PM Claus Stadler <
[email protected]> wrote:

Hi,


The SparqlStmt API built against jena 3.14.0 is now available on Maven
Central [1]  in case one want to give it a try (example in [2]) and give
feedback and whether one thinks it would be a useful contribution to Jena
directly - and what changes would be necessary if so.


<dependency>
    <groupId>org.aksw.jena-sparql-api</groupId>
    <artifactId>jena-sparql-api-stmt</artifactId>
    <version>3.14.0-1</version>

</dependency>


[1]
https://search.maven.org/artifact/org.aksw.jena-sparql-api/jena-sparql-api-stmt/3.14.0-1/jar

[2]
https://github.com/SmartDataAnalytics/jena-sparql-api/blob/def0d3bdf0f4396fbf1ef0715f9697e9bb255029/jena-sparql-api-stmt/src/test/java/org/aksw/jena_sparql_api/stmt/TestSparqlStmtUtils.java#L54


Cheers,

Claus



On 18.03.20 16:04, Andy Seaborne wrote:
Note that parsing the string as a query aborts early as soon as it finds
an update keyword so the cost of parsing isn't very large.

     Andy

On 18/03/2020 11:58, Marco Neumann wrote:
is there some utility function here in the code base now already to do
this, or do I still need to roll my own here?

On Tue, Jul 30, 2013 at 4:25 PM Andy Seaborne <[email protected]> wrote:

On 30/07/13 10:13, Arthur Vaïsse-Lesteven wrote:
Hi,

I would like to know if Jena offers a way to detect the type of an
unknow SPARQL request ?Starting from the query string.

At the moment the only way I succed to code it without "basic parsing"
of the query ( sort of thing I prefer avoid, manually parsing string
with
short function often create errors )
looks like this :

[...]
          String queryString = "a query string, may be a select or an
update";

           try{
               Query select = QueryFactory.create(queryString);
               Service.process_select_query(select);//do some work with
the select
           }
           catch(QueryException e){
               UpdateRequest update =
UpdateFactory.create(queryString);
               Service.process_update_query(update);//do some work with
the update
           }
           catch(ProcessException e){
               //handle this exception
           }

[...]

So is it possible ? Or not ?

Not currently.

You could use a regexp to spot the SELECT/CONSTRUCT/DESCRIBE/ASK
keyword
coming after BASE/PREFIXES/Comments.

          Andy



--
Dipl. Inf. Claus Stadler
Department of Computer Science, University of Leipzig
Research Group: http://aksw.org/
Workpage & WebID: http://aksw.org/ClausStadler
Phone: +49 341 97-32260



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