[MARMOTTA-191] SPARQL graph results fails under some circunstances

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.6, 3.0-incubating
• Fix Version/s: 3.1-incubating
• Component/s: Platform
• Assignee: Sergio Fernández
• Reporter: Sergio Fernández
• Created: 08/Apr/13 11:53
• Updated: 03/Oct/13 13:38
• Resolved: 11/Jul/13 11:05

Description

Write some unit tests: https://git-wip-us.apache.org/repos/asf?p=incubator-marmotta.git;a=blob;f=platform/marmotta-sparql/src/test/java/org/apache/marmotta/platform/sparql/webservices/SparqlWebServiceTest.java;h=06d03ebdcbcdec8cdf33e4ae975383ee6c2332bf;hb=HEAD#l91

I realized the SPARQL Graph results fails:

java.lang.AssertionError: Created a duplicate MemURI for URI http://www.wikier.org/foaf#wikier
at org.openrdf.sail.memory.model.MemValueFactory.getOrCreateMemURI(MemValueFactory.java:281)
at org.openrdf.sail.memory.model.MemValueFactory.getOrCreateMemResource(MemValueFactory.java:247)
at org.openrdf.sail.memory.MemoryStore.addStatement(MemoryStore.java:538)
at org.openrdf.sail.memory.MemoryStoreConnection.addStatementInternal(MemoryStoreConnection.java:441)
at org.openrdf.sail.memory.MemoryStoreConnection.addStatementInternal(MemoryStoreConnection.java:395)
at org.openrdf.sail.helpers.SailConnectionBase.addStatement(SailConnectionBase.java:441)
at org.openrdf.repository.sail.SailRepositoryConnection.addWithoutCommit(SailRepositoryConnection.java:281)
at org.openrdf.repository.base.RepositoryConnectionBase.addWithoutCommit(RepositoryConnectionBase.java:561)
at org.openrdf.repository.base.RepositoryConnectionBase.add(RepositoryConnectionBase.java:433)
at org.apache.marmotta.platform.sparql.services.sparqlio.rdf.SPARQLGraphResultWriter.write(SPARQLGraphResultWriter.java:68)
at org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl.query(SparqlServiceImpl.java:195)
at org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl.query(SparqlServiceImpl.java:108)
at org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl$Proxy$$$_WeldClientProxy.query(SparqlServiceImpl$Proxy$$$_WeldClientProxy.java)
at org.apache.marmotta.platform.sparql.webservices.SparqlWebService$1.write(SparqlWebService.java:485)

But I'm not totally sure it's actually a bug, either on our side or in Sesame, because I cannot easily reproduce it on all environments: it works fine at runtime and from junit at eclipse, but it fails from maven.