litvinovg/vitro
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

better error messages if remote SPARQL endpoint is unavailable

Browse source
This commit is contained in:
brianjlowe 2012-06-25 20:57:52 +00:00
parent fab1555cdb
commit dcfc32803c
2 changed files with 18 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

15
webapp/src/edu/cornell/mannlib/vitro/webapp/rdfservice/impl/sparql/RDFServiceSparql.java
View file

@ -10,6 +10,7 @@ import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.io.IOUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
@ -77,6 +78,20 @@ public class RDFServiceSparql extends RDFServiceImpl implements RDFService {
this.updateEndpointURI = updateEndpointURI;
this.readRepository = new HTTPRepository(readEndpointURI);
this.updateRepository = new HTTPRepository(updateEndpointURI);
testConnection();
}
private void testConnection() {
try {
this.sparqlSelectQuery(
"SELECT ?s WHERE { ?s a " +
"<http://vitro.mannlib.cornell.edu/ns/vitro/nonsense/> }",
RDFService.ResultFormat.JSON);
} catch (Exception e) {
throw new RuntimeException("Unable to connect to endpoint at " +
readEndpointURI, e);
}
}
/**

3
webapp/src/edu/cornell/mannlib/vitro/webapp/servlet/setup/WebappDaoSetup.java
View file

@ -133,6 +133,7 @@ public class WebappDaoSetup extends JenaDataSourceSetupBase
baseOms.setTBoxModel(tboxAssertions);
} catch (Throwable e) {
log.error("Unable to load tbox assertion cache from DB", e);
throw new RuntimeException(e);
}
// TBox inferences
@ -155,6 +156,7 @@ public class WebappDaoSetup extends JenaDataSourceSetupBase
inferenceOms.setTBoxModel(tboxInferences);
} catch (Throwable e) {
log.error("Unable to load tbox inference cache from DB", e);
throw new RuntimeException(e);
}
// union ABox
@ -204,6 +206,7 @@ public class WebappDaoSetup extends JenaDataSourceSetupBase
} catch (Throwable e) {
log.error("Unable to load application metadata model cache from DB"
, e);
throw new RuntimeException(e);
}
checkForNamespaceMismatch( baseOms.getApplicationMetadataModel(), ctx );