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NIHVIVO-1849 added check for empty result set

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bjl23 2011-01-21 16:19:54 +00:00
parent 781f3d042f
commit aeff100428
1 changed files with 17 additions and 11 deletions
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28
webapp/src/edu/cornell/mannlib/vitro/webapp/dao/jena/IndividualSDB.java
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@ -939,17 +939,23 @@ public class IndividualSDB extends IndividualImpl implements Individual {
propertyURI + "> ?object} \n" + propertyURI + "> ?object} \n" +
WebappDaoFactorySDB.getFilterBlock(graphVars, datasetMode) + WebappDaoFactorySDB.getFilterBlock(graphVars, datasetMode) +
"}"; "}";
ResultSet results = QueryExecutionFactory.create( QueryExecution qe = QueryExecutionFactory.create(
QueryFactory.create(valueOfProperty), dataset).execSelect(); QueryFactory.create(valueOfProperty), dataset);
QuerySolution result = results.next(); try {
RDFNode value = result.get("object"); ResultSet results = qe.execSelect();
if (value != null && value.canAs(OntResource.class)) { if (results.hasNext()) {
return new IndividualSDB( QuerySolution result = results.next();
((OntResource) value.as(OntResource.class)).getURI(), RDFNode value = result.get("object");
dwf, datasetMode, webappDaoFactory); if (value != null && value.canAs(OntResource.class)) {
} else { return new IndividualSDB(
return null; ((OntResource) value.as(OntResource.class)).getURI(),
} dwf, datasetMode, webappDaoFactory);
}
}
return null;
} finally {
qe.close();
}
} finally { } finally {
dataset.getLock().leaveCriticalSection(); dataset.getLock().leaveCriticalSection();
w.close(); w.close();