Hi Sanjeev,
the short answer is that you cannot use nested { ... } blocks in SWP, so
the {# SELECT {= ... } } pattern is not supported. Assuming that ?test
has the string of an URI as its value when called, you can simply
reference the variable, e.g.
{# SELECT ?result WHERE { BIND (get:broader(IRI(?test)) AS ?result) }
In this case, ?test is passed into the query at execution time as a
"pre-bound" variable that can be used like any other variable in the
usual SPARQL syntax, only that it already has a value beforehand.
(While you are exploring the syntax of SWP, it might be more efficient
to use the internal form editor of TBC instead of external .swp files,
because you would see errors earlier).
Holger
On 30/08/2018 4:09 AM, Sanjeev Devireddy wrote:
Hi,
By following the example given in the document, Defining SPARQL
Functions with
SWP(https://www.topquadrant.com/2013/06/18/defining-sparql-functions-with-swp/)
we created a SPARQL function and trying to call it from SWP(.swp
file). The function takes an URI of a concept/node of taxonomy as
input and return it's children(space separated values).
If the input URI is hard coded in the caller(embedding SPARQL
expression of SWP) then it works. But if we try to use a variable
through the expression {= ?varaibleName} in the caller(embedding
SPARQL expression of SWP) then the SWP file throws
org.apache.jena.query.QueryParseException (please find the attachment).
{#
SELECT ?result
WHERE {
BIND(get:broader(<{= ?test }>) AS ?result)
}
}
So we want to understand that what are different ways to call SPARQL
functions from SWP and pass dynamic/run-time values as parameters.
Please find attachments for our SPARQL function(get.ui.ttlx) and SWP
file(getBroaderConcepts.swp)
Thanks,
Sanjeev
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