Hi,
I want to see the different resources that have an urispace different
from "http://dbpedia.org/resource/"; .
My query is
SELECT ?s WHERE {
?s ?p ?o
FILTER NOT EXISTS
{ ?s ?p ?o
FILTER regex(str(?s), "http://dbpedia.org/resource/";)
}
} LIMIT 1
and i execute this query like this :
String query = setQuery(firstUriSpace);
QueryExecution execution = QueryExecutionFactory.sparqlService(endpoint, query);
try {
ResultSet set = execution.execSelect();
while (set.hasNext()) {
Resource newResource = set.next().getResource("s");
}
} catch (Exception e) {
e.printStackTrace();
execution.close();
}
execution.close();
And i took this exception :
HttpException: HttpException: 400 Bad Request: HttpException: 400 Bad Request
at
com.hp.hpl.jena.sparql.engine.http.HttpQuery.execCommon(HttpQuery.java:350)
at
com.hp.hpl.jena.sparql.engine.http.HttpQuery.execGet(HttpQuery.java:189)
at com.hp.hpl.jena.sparql.engine.http.HttpQuery.exec(HttpQuery.java:144)
at
com.hp.hpl.jena.sparql.engine.http.QueryEngineHTTP.execSelect(QueryEngineHTTP.java:141)
at
main.VOIDExtractor.extractBasicPropertiesManuallyForBigDataset(VOIDExtractor.java:819)
at
main.VOIDExtractorTest.extractUrispacesOfVeryBigDatasetManuallyTest(VOIDExtractorTest.java:484)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: HttpException: 400 Bad Request
at
com.hp.hpl.jena.sparql.engine.http.HttpQuery.execCommon(HttpQuery.java:299)
... 29 more
This query works on web site "http://dbpedia.org/sparql";. But from
jena it didn't work.
How can i execute from jena?
Thank you.
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