SPARQL parser bug?

[Martynas Jusevicius]

Hey,

the following query
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX sdmx-dimension: <http://purl.org/linked-data/sdmx/2009/dimension#>
PREFIX sdmx-measure: <http://purl.org/linked-data/sdmx/2009/measure#>
PREFIX qb: <http://purl.org/linked-data/cube#>
PREFIX year: <http://reference.data.gov.uk/id/year/>
PREFIX property: <http://worldbank.270a.info/property/>
PREFIX indicator: <http://worldbank.270a.info/classification/indicator/>
PREFIX country: <http://worldbank.270a.info/classification/country/>

PREFIX g-meta: <http://worldbank.270a.info/graph/meta>
PREFIX g-indicators:
<http://worldbank.270a.info/graph/world-development-indicators>

SELECT ?year (xsd:float(?gdpGrowth) AS ?gdpGrowth)
(xsd:float(?hhGrowth) AS ?hhGrowth)
WHERE {
    GRAPH g-indicators: {
        ?gdpObs property:indicator indicator:NY.GDP.MKTP.KD.ZG ;
            sdmx-dimension:refArea ?country ;
            sdmx-dimension:refPeriod ?period ;
            sdmx-measure:obsValue ?gdpGrowth .
        ?hhObs property:indicator indicator:NE.CON.PRVT.KD.ZG ;
            sdmx-dimension:refArea ?country ;
            sdmx-dimension:refPeriod ?period ;
            sdmx-measure:obsValue ?hhGrowth .
FILTER (?country = country:DK)
        BIND(SUBSTR(STR(?period), 38, 4) AS ?year)
        #FILTER (xsd:int(?year) >= 1990)
    }

    GRAPH g-meta: {
        ?country skos:prefLabel ?countryPrefLabel .
    }
}
ORDER BY DESC(?year)

looks fine and works fine in Dydra, but throws an exception in Jena
(where the SUBSTR() is):

com.hp.hpl.jena.query.QueryParseException: Encountered " "(" "( "" at
line 26, column 20.
Was expecting:
    "regex" ...

        
com.hp.hpl.jena.sparql.lang.ParserSPARQL11.perform(ParserSPARQL11.java:87)
        com.hp.hpl.jena.sparql.lang.ParserSPARQL11.parse(ParserSPARQL11.java:40)
        com.hp.hpl.jena.query.QueryFactory.parse(QueryFactory.java:132)
        com.hp.hpl.jena.query.QueryFactory.create(QueryFactory.java:69)
        com.hp.hpl.jena.query.QueryFactory.create(QueryFactory.java:40)
        com.hp.hpl.jena.query.QueryFactory.create(QueryFactory.java:28)
        org.graphity.browser.SPARQLResource.getQuery(SPARQLResource.java:87)

Is that a bug?

Martynas
graphity.org