我想使用 Jena Fuseki 为一些本体文件构建一个 SPARQL 端点。和我的 fuseki 配置如下:
@prefix fuseki: <http://jena.apache.org/fuseki#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix tdb: <http://jena.hpl.hp.com/2008/tdb#> .
@prefix ja: <http://jena.hpl.hp.com/2005/11/Assembler#> .
<#service1> rdf:type fuseki:Service ;
fuseki:name "ds" ; # http://host:port/ds
fuseki:serviceQuery "sparql" ; # SPARQL query service
fuseki:serviceQuery "query" ; # SPARQL query service (alt name)
fuseki:serviceUpdate "update" ; # SPARQL update service
fuseki:serviceUpload "upload" ; # Non-SPARQL upload service
fuseki:serviceReadWriteGraphStore "data" ; # SPARQL Graph store protocol (read and write)
# A separate read-only graph store endpoint:
fuseki:serviceReadGraphStore "get" ; # SPARQL Graph store protocol (read only)
fuseki:dataset <#dataset> ;
.
<#dataset> rdf:type ja:RDFDataset ;
ja:defaultGraph <#inf_model> ;
.
<#mv_data_model> a ja:MemoryModel;
ja:content[ja:externalContent <file://D:/Program%20Files/d2rq-0.8.1/movie.nt>] ;
ja:content[ja:externalContent <file://D:/Program%20Files/apache-jena-fuseki-3.13.1/run/ontology.ttl>]
.
<#inf_model> a ja:InfModel ;
ja:baseModel <#mv_data_model>;
ja:reasoner [ja:reasonerURL <http://jena.hpl.hp.com/2003/OWLFBRuleReasoner>] ;
#ja:reasoner [
# ja:reasonerURL <http://jena.hpl.hp.com/2003/GenericRuleReasoner> ;
# ja:rulesFrom <file://D:/Program%20Files/apache-jena-fuseki-3.13.1/run/rule.ttl>; ]
.
我将 fuseki 作为独立服务器运行。当我关闭 OWL 推理器时,它运行良好。但是一旦启用 OWL 推理器,服务器对查询没有响应,即使查询像
SELECT ?s ?p ?o
WHERE {
?s ?p ?o
}
limit 10
没有响应,然后抛出异常:java.lang.OutOfMemoryError。但是,RuleReasoner 运行良好。而我的ttl文件有大约1500000个三元组,是不是数据规模太大,OWL Reasoner无法推断?所有的工作都是在我的电脑上完成的,有没有朋友可以帮帮我?谢谢