SPARQL查询，它在DBpedia端点中工作，但不在ARC2中工作(A SPARQL query that works in the DBpedia endpoint but not with AR

SPARQL查询，它在DBpedia端点中工作，但不在ARC2中工作(A SPARQL query that works in the DBpedia endpoint but not with ARC2)

查询如下：

PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> SELECT distinct ?value from <http://fr.dbpedia.org> WHERE{ ?sub rdfs:label ?value. FILTER (CONTAINS(LCASE(?value), 'data')). } limit 10

它使用DBpedia端点工作得非常好但是当我尝试使用ARC2从PHP使用它时，我收到以下错误：

查询errorsArray（[0] => ARC2_SPARQLPlusParser中的不完整FILTER [1] =>组图模式不完整或无效。无法处理ARC2_SPARQLPlusParser中的“”）

任何想法可能是什么问题？ 谢谢！

the query is the following :

PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> SELECT distinct ?value from <http://fr.dbpedia.org> WHERE{ ?sub rdfs:label ?value. FILTER (CONTAINS(LCASE(?value), 'data')). } limit 10

it works perfectly fine using the DBpedia endpoint but when I try to use it from PHP using ARC2 I get the following error :

Query errorsArray ( [0] => Incomplete FILTER in ARC2_SPARQLPlusParser [ 1] => Incomplete or invalid Group Graph pattern. Could not handle " " in ARC2_SPARQLPlusParser )

Any ideas what could be the problem ? thank's!

最满意答案

ARC2不支持完整的SPARQL 1.1（请参阅源代码 ），因此不支持CONTAINS 。 您可以尝试使用REGEX ：

PREFIX rdfs： http ： //www.w3.org/2000/01/rdf-schema#

SELECT distinct ?value
    from <http://fr.dbpedia.org>
    WHERE{                                          

        ?sub rdfs:label ?value.                     
                    FILTER (REGEX(STR(?value), 'data', 'i')).                                                           
        }

limit 10  
ARC2 does not support full SPARQL 1.1 (see the source code), thus, CONTAINS is not supported. You can try to use REGEX instead:
 
PREFIX rdfs: http://www.w3.org/2000/01/rdf-schema#
 
SELECT distinct ?value
    from <http://fr.dbpedia.org>
    WHERE{                                          

        ?sub rdfs:label ?value.                     
                    FILTER (REGEX(STR(?value), 'data', 'i')).                                                           
        }

limit 10