[JENA-1207] Adding Decimal Typed Literal Results in TDBException on Dataset Commit

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Workaround
• Affects Version/s: Jena 3.1.0
• Component/s: TDB

Environment

Mac OSX

• Assignee: Unassigned
• Reporter: Kai He
• Created: 05/Jul/16 16:05
• Updated: 26/Dec/19 10:16
• Resolved: 05/Jul/16 22:41

Description

When adding a statement of the form

http://www.myhost.com/mysubject, http://www.myhost.com/mypredicate, "2.2"^^http://www.w3.org/2001/XMLSchema#decimal

using the following snippet

import java.util.ArrayList;
import java.util.List;

import org.apache.jena.datatypes.RDFDatatype;
import org.apache.jena.datatypes.xsd.XSDDatatype;
import org.apache.jena.query.Dataset;
import org.apache.jena.query.ReadWrite;
import org.apache.jena.rdf.model.Model;
import org.apache.jena.rdf.model.Property;
import org.apache.jena.rdf.model.RDFNode;
import org.apache.jena.rdf.model.Resource;
import org.apache.jena.rdf.model.ResourceFactory;
import org.apache.jena.rdf.model.Statement;
import org.apache.jena.tdb.TDBFactory;

public class DecimalExample {
	
	public static void main(String[] args) {
		String tdbPath = "absolute/path/here";
		Dataset dataset = TDBFactory.createDataset( tdbPath );
		
		Resource subject = ResourceFactory.createResource("http://www.myhost.com/mysubject");
		Property predicate = ResourceFactory.createProperty("http://www.myhost.com/mypredicate");
		RDFDatatype datatype = new XSDDatatype("decimal");
		RDFNode object = ResourceFactory.createTypedLiteral("2.2", datatype);
		
		List<Statement> statements = new ArrayList<Statement>();
		statements.add( ResourceFactory.createStatement(subject, predicate, object) );
		
		dataset.begin(ReadWrite.WRITE);
		try {
			
			Model model = dataset.getDefaultModel();
			
			model.add(statements);
			dataset.commit();
			
		} catch (Exception e) {
			
			e.printStackTrace();
			dataset.abort();
			
		} finally {

			dataset.end();

		}
		
	}
}

A TDBException is thrown. The stack trace shows the following:

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.


Different ids for "2.2"^^http://www.w3.org/2001/XMLSchema#decimal: allocated: expected [0000000000000000], got [0201000000000016]
>>>>>>>>>>
label = nodes
txn = Transaction: 1 : Mode=WRITE : State=PREPARING : /Users/kaihe/Documents/experimental/tdb/
offset = 0
journalStartOffset = 0
journal = nodes

org.apache.jena.tdb.transaction.TDBTransactionException: Abort during prepare - transaction did not commit
	at org.apache.jena.tdb.transaction.Transaction.commit(Transaction.java:123)
	at org.apache.jena.tdb.transaction.DatasetGraphTxn.commit(DatasetGraphTxn.java:54)
	at org.apache.jena.tdb.transaction.DatasetGraphTransaction._commit(DatasetGraphTransaction.java:146)
	at org.apache.jena.sparql.core.DatasetGraphTrackActive.commit(DatasetGraphTrackActive.java:46)
	at org.apache.jena.sparql.core.DatasetImpl.commit(DatasetImpl.java:123)
	at DecimalExample.main(DecimalExample.java:37)
Caused by: org.apache.jena.tdb.TDBException: Different ids for "2.2"^^http://www.w3.org/2001/XMLSchema#decimal: allocated: expected [0000000000000000], got [0201000000000016]
	at org.apache.jena.tdb.transaction.NodeTableTrans.inconsistent(NodeTableTrans.java:232)
	at org.apache.jena.tdb.transaction.NodeTableTrans.append(NodeTableTrans.java:220)
	at org.apache.jena.tdb.transaction.NodeTableTrans.writeNodeJournal(NodeTableTrans.java:317)
	at org.apache.jena.tdb.transaction.NodeTableTrans.commitPrepare(NodeTableTrans.java:289)
	at org.apache.jena.tdb.transaction.Transaction.prepare(Transaction.java:172)
	at org.apache.jena.tdb.transaction.Transaction.commit(Transaction.java:108)
	... 5 more

The problem goes away when adding statements with integer values like

http://www.myhost.com/mysubject, http://www.myhost.com/mypredicate, "2"^^http://www.w3.org/2001/XMLSchema#integer