Aklakan opened a new issue, #3404:
URL: https://github.com/apache/jena/issues/3404
### Version
5.6.0-SNAPSHOT
### What happened?
With TDB2, numeric literals seem to be exposed in their canonical form,
which may not match the stored lexical form. As a result, checking for
containment of triples that were returned may unexpectedly fail. In my case,
this behavior breaks a (custom) sameAs reasoner. It seems that the lexical form
is still available in TDB2 but it would have to be exposed. To me this seems to
be a bug.
The behavior is as expected for the in memory dataset.
```java
@Test
public void testNumeric() {
System.out.println("Memory:");
doEval(DatasetGraphFactory.create());
System.out.println();
System.out.println("TDB2:");
doEval(TDB2Factory.createDataset().asDatasetGraph());
}
private static void doEval(DatasetGraph dsg) {
try (AutoTxn txn = Txn.autoTxn(dsg, ReadWrite.WRITE)) {
UpdateExec.dataset(dsg).update("INSERT DATA { <urn:s> <urn:p>
'18'^^<http://www.w3.org/2001/XMLSchema#decimal> }").execute();
Table table = QueryExec.dataset(dsg).query("SELECT * { ?s ?p ?o
}").table();
Triple t = Substitute.substitute(Triple.create(Var.alloc("s"),
Var.alloc("p"), Var.alloc("o")), table.rows().next());
System.out.println("Obtained triple via SELECT: " + t);
Graph rg = QueryExec.dataset(dsg).query("CONSTRUCT WHERE { ?s ?p
?o }").construct();
System.out.println("Obtained graph via CONSTRUCT:");
RDFDataMgr.write(System.out, rg, RDFFormat.NTRIPLES);
boolean b = QueryExec.dataset(dsg).query("ASK {" +
NodeFmtLib.strNT(t) + " }").ask();
System.out.println("Sparql Ask: " + b);
Iterator<Triple> it = dsg.getDefaultGraph().find(t);
try {
System.out.println("Graph.find: " + it.hasNext());
} finally {
Iter.close(it);
}
txn.commit();
}
}
```
Output:
```
Memory:
Obtained triple via SELECT: urn:s urn:p "18"^^xsd:decimal
Obtained graph via CONSTRUCT:
<urn:s> <urn:p> "18"^^<http://www.w3.org/2001/XMLSchema#decimal> .
Sparql Ask: true
Graph.find: true
TDB2:
Obtained triple via SELECT: urn:s urn:p "18.0"^^xsd:decimal
Obtained graph via CONSTRUCT:
<urn:s> <urn:p> "18.0"^^<http://www.w3.org/2001/XMLSchema#decimal> .
Sparql Ask: false
Graph.find: false
```
Note, that when using `"18"^^xsd:decimal` then the lookups return `true` for
TDB2.
### Relevant output and stacktrace
```shell
```
### Are you interested in making a pull request?
Maybe
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