Indeed adding syntaxARQ brings a progress:
QueryFactory.create(query, Syntax.syntaxARQ)
GRAPH is tolerated,
but OPTIONAL is not:
Exception in thread "main" org.apache.jena.query.QueryParseException:
Encountered " "optional" "OPTIONAL "" at line 9, column 11.
Was expecting one of:
<IRIref> ...
<PNAME_NS> ...
<PNAME_LN> ...
<BLANK_NODE_LABEL> ...
<VAR1> ...
<VAR2> ...
"true" ...
"false" ...
<INTEGER> ...
<DECIMAL> ...
<DOUBLE> ...
<INTEGER_POSITIVE> ...
<DECIMAL_POSITIVE> ...
<DOUBLE_POSITIVE> ...
<INTEGER_NEGATIVE> ...
<DECIMAL_NEGATIVE> ...
<DOUBLE_NEGATIVE> ...
<STRING_LITERAL1> ...
<STRING_LITERAL2> ...
<STRING_LITERAL_LONG1> ...
<STRING_LITERAL_LONG2> ...
"(" ...
<NIL> ...
"}" ...
"[" ...
<ANON> ...
at
org.apache.jena.sparql.lang.ParserSPARQL11.perform(ParserSPARQL11.java:100)
at
org.apache.jena.sparql.lang.ParserSPARQL11.parse$(ParserSPARQL11.java:52)
2017-02-16 17:54 GMT+01:00 Rob Vesse <[email protected]>:
> As a general comment the short form of construct is very constrained.
> Anything other than that simple triple patterns is illegal in the short form
>
> Rob
>
> On 16/02/2017 16:45, "Andy Seaborne" <[email protected]> wrote:
>
> Hi,
>
> The result of a CONSTRUCT is an RDF graph and the template must be a
> "triples template"
>
> [10] ConstructQuery ::=
> 'CONSTRUCT' ... 'WHERE' '{' TriplesTemplate? '}' ...
>
> and
>
> [52] TriplesTemplate ::=
> TriplesSameSubject ( '.' TriplesTemplate? )?
>
> No GRAPH.
>
> Jena accepts CONSTRUCT WHERE { GRAPH .... }
> in extended mode (Syntax.syntaxARQ) and returns a Dataset.
>
> Andy
>
>
> On 16/02/17 14:52, Jean-Marc Vanel wrote:
> > Hi
> >
> > I tested with 3.2.0.
> >
> > The short form for the CONSTRUCT query
> > https://www.w3.org/TR/sparql11-query/#constructWhere
> > works, at least syntactically ( I have nothing in the default graph
> in my
> > TDB ) :
> > CONSTRUCT WHERE
> > { ?X ?P ?O . }
> > LIMIT 10
> >
> > But adding GRAPH pattern gives a synyax error:
> > CONSTRUCT WHERE {
> > GRAPH ?G {
> > ?X ?P ?O .
> > }
> > } LIMIT 10
> >
> > Which does not occur e.g. with Virtuoso.
> >
> > org.apache.jena.query.QueryParseException: Encountered " "graph"
> "GRAPH ""
> > at line 2, column 1.
> > Was expecting one of:
> > <IRIref> ...
> > <PNAME_NS> ...
> > <PNAME_LN> ...
> > <BLANK_NODE_LABEL> ...
> > <VAR1> ...
> > <VAR2> ...
> > "true" ...
> > "false" ...
> > <INTEGER> ...
> > <DECIMAL> ...
> > <DOUBLE> ...
> > <INTEGER_POSITIVE> ...
> > <DECIMAL_POSITIVE> ...
> > <DOUBLE_POSITIVE> ...
> > <INTEGER_NEGATIVE> ...
> > <DECIMAL_NEGATIVE> ...
> > <DOUBLE_NEGATIVE> ...
> > <STRING_LITERAL1> ...
> > <STRING_LITERAL2> ...
> > <STRING_LITERAL_LONG1> ...
> > <STRING_LITERAL_LONG2> ...
> > "(" ...
> > <NIL> ...
> > "}" ...
> > "[" ...
> > <ANON> ...
> >
> > at
> > org.apache.jena.sparql.lang.ParserSPARQL11.perform(
> ParserSPARQL11.java:100)
> >
> >
>
>
>
>
>
>
--
Jean-Marc Vanel
http://www.semantic-forms.cc:9111/display?displayuri=http://jmvanel.free.fr/jmv.rdf%23me
Déductions SARL - Consulting, services, training,
Rule-based programming, Semantic Web
+33 (0)6 89 16 29 52
Twitter: @jmvanel , @jmvanel_fr ; chat: irc://irc.freenode.net#eulergui
