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Claude Warren commented on JENA-1841: ------------------------------------- Pull [request 704|https://github.com/apache/jena/pull/704] has fixes to throw exception when unregistered object type is used to create a literal. Please pay particular attention to the Conversions.makeLiteral() methods (2 of them). > Side Effect of Datatype <java:java.util.UUID> Use in Query > ---------------------------------------------------------- > > Key: JENA-1841 > URL: https://issues.apache.org/jira/browse/JENA-1841 > Project: Apache Jena > Issue Type: Bug > Affects Versions: Jena 3.14.0 > Reporter: Jan Martin Keil > Priority: Major > Time Spent: 10m > Remaining Estimate: 0h > > I faced a bug caused by a side effect of using the datatype > <java:java.util.UUID> in a query. > Short story is that you can not use this datatype in model parsing or queries > after you once used it in a query. > I did not completely break it down to a specific piece of code, but I wrote > some testcases that narrow down the issue. Please note that the order of > execution of the test methods effect the result. So please first try to > execute single test methods before executing the whole test class. > {code:java} > import java.io.ByteArrayInputStream; > import java.util.UUID; > import org.apache.jena.arq.querybuilder.SelectBuilder; > import org.apache.jena.query.QueryExecution; > import org.apache.jena.query.QueryExecutionFactory; > import org.apache.jena.rdf.model.Model; > import org.apache.jena.rdf.model.ModelFactory; > import org.junit.jupiter.api.Test; > public class UuidParsingintoModelOrQuery { > @Test > public void uuidParsingIntoSingleModel() throws Exception { > UUID uuid1 = > UUID.fromString("00000000-0000-0000-0000-000000000000"); > UUID uuid2 = > UUID.fromString("00000000-0000-0000-0000-000000000001"); > String modelStr = "_:a <http://example.org/p1> \"" + uuid1 + > "\"^^<java:java.util.UUID> .\n" > + "_:a <http://example.org/p2> \"" + uuid1 + > "\"^^<java:java.util.UUID> ."; > ModelFactory.createDefaultModel().read(new > ByteArrayInputStream(modelStr.getBytes()), "", "N-TRIPLE"); > // repeat > modelStr = "_:a <http://example.org/p1> \"" + uuid2 + > "\"^^<java:java.util.UUID> .\n" > + "_:a <http://example.org/p2> \"" + uuid2 + > "\"^^<java:java.util.UUID> ."; > ModelFactory.createDefaultModel().read(new > ByteArrayInputStream(modelStr.getBytes()), "", "N-TRIPLE"); > } > @Test > public void sameUuidParsingIntoSingleModel() throws Exception { > UUID uuid1 = > UUID.fromString("00000000-0000-0000-0000-000000000002"); > UUID uuid2 = > UUID.fromString("00000000-0000-0000-0000-000000000003"); > String modelStr = "_:a <http://example.org/p1> \"" + uuid1 + > "\"^^<java:java.util.UUID> .\n" > + "_:a <http://example.org/p2> \"" + uuid2 + > "\"^^<java:java.util.UUID> ."; > ModelFactory.createDefaultModel().read(new > ByteArrayInputStream(modelStr.getBytes()), "", "N-TRIPLE"); > // repeat > ModelFactory.createDefaultModel().read(new > ByteArrayInputStream(modelStr.getBytes()), "", "N-TRIPLE"); > } > @Test > public void sameUuidParsingIntoMultipleModel() throws Exception { > UUID uuid = > UUID.fromString("00000000-0000-0000-0000-000000000004"); > String modelStr = "_:a <http://example.org/p1> \"" + uuid + > "\"^^<java:java.util.UUID> ."; > ModelFactory.createDefaultModel().read(new > ByteArrayInputStream(modelStr.getBytes()), "", "N-TRIPLE"); > ModelFactory.createDefaultModel().read(new > ByteArrayInputStream(modelStr.getBytes()), "", "N-TRIPLE"); > } > @Test > public void uuidUseInQuery() throws Exception { > UUID uuid = > UUID.fromString("00000000-0000-0000-0000-000000000005"); > SelectBuilder select = new SelectBuilder(); > select.addWhere("?a", "<http://example.org/p>", "?uuid"); > select.addFilter(select.getExprFactory().eq("?uuid", uuid)); > QueryExecution q = QueryExecutionFactory.create(select.build()); > } > @Test > public void uuidParsingIntoQuery() throws Exception { > UUID uuid = > UUID.fromString("00000000-0000-0000-0000-000000000006"); > SelectBuilder select = new SelectBuilder(); > select.addWhere("?a", "<http://example.org/p>", "?uuid"); > select.addFilter(select.getExprFactory().eq("?uuid", uuid)); > QueryExecution q = > QueryExecutionFactory.create(select.toString()); > } > @Test > public void uuidUseInQueryAndParsingIntoModel() throws Exception { > UUID uuid = > UUID.fromString("00000000-0000-0000-0000-000000000007"); > SelectBuilder select = new SelectBuilder(); > select.addWhere("?a", "<http://example.org/p>", "?uuid"); > select.addFilter(select.getExprFactory().eq("?uuid", uuid)); > QueryExecution q = QueryExecutionFactory.create(select.build()); > String modelStr = "_:a <http://example.org/p1> \"" + uuid + > "\"^^<java:java.util.UUID> .\n" > + "_:a <http://example.org/p2> \"" + uuid + > "\"^^<java:java.util.UUID> ."; > Model model = ModelFactory.createDefaultModel().read(new > ByteArrayInputStream(modelStr.getBytes()), "", > "N-TRIPLE"); > } > } > {code} -- This message was sent by Atlassian Jira (v8.3.4#803005)