http://www.openrdf.org/issues This file is an XML representation of an issue en http://www.openrdf.org/issues/browse/SES-995 Issue originally raised by Christopher Lott in the context of OWLIM-Lite. However, this has been confirmed with Sesame in-memory repository also: <br/> <br/> When I add a statement to two contexts and then ask the repository for the known contexts, a remote Sesame repository only shows one of the contexts. The same test works as expected on a local repository, i.e. both contexts are returned. <br/> <br/> Sesame in-memory repository with RDFS. <br/> Correct behaviour when repository instantiated locally. <br/> Incorrect behaviour when repository used remotely. SES-995

Missing context when using remote repository.

Bug Major Resolved Fixed Jeen Broekstra Barry Bishop Mon, 14 May 2012 09:41:05 +0200 (CEST) Fri, 18 May 2012 07:17:35 +0200 (CEST) 2.6.5 2.6.6 HTTPRepository 1 The following sample code will demonstrate the problem (courtesy of Christopher Lott): <br/> <br/> ================================================= <br/> <br/> import org.openrdf.model.Resource; <br/> import org.openrdf.model.Statement; <br/> import org.openrdf.model.URI; <br/> import org.openrdf.model.ValueFactory; <br/> import org.openrdf.model.vocabulary.RDF; <br/> import org.openrdf.repository.Repository; <br/> import org.openrdf.repository.RepositoryConnection; <br/> import org.openrdf.repository.RepositoryResult; <br/> import org.openrdf.repository.http.HTTPRepository; <br/> import org.openrdf.repository.sail.SailRepository; <br/> import org.openrdf.sail.memory.MemoryStore; <br/> <br/> /** <br/> &nbsp;* Adds a single entity with two contexts to test context implementation. Uses a <br/> &nbsp;* memory repository if the program is invoked with no arguments. If a single <br/> &nbsp;* argument is supplied, treats it as the URI of a remote repository and runs <br/> &nbsp;* the test using that repository. <br/> &nbsp;* <br/> &nbsp;* @author clott <br/> &nbsp;*/ <br/> public class TestOneEntityTwoContexts { <br/> <br/> public static void main(String[] args) { <br/> <br/> try { <br/> // Get started <br/> Repository repo = null; <br/> if (args.length != 1) { <br/> System.out.println(&quot;Creating an in-memory Sail repository&quot;); <br/> repo = new SailRepository(new MemoryStore()); <br/> repo.initialize(); <br/> } else { <br/> System.out.println(&quot;Using remote repository at &quot; + args[0]); <br/> repo = new HTTPRepository(args[0]); <br/> } <br/> <br/> // Open a connection. <br/> RepositoryConnection con = repo.getConnection(); <br/> <br/> // Create some resources and literals to use in statements <br/> ValueFactory f = repo.getValueFactory(); <br/> String namespace = &quot;<a href="http://example.org/ontology#">http://example.org/ontology#</a>&quot;; <br/> URI personClassUri = f.createURI(namespace + &quot;Person&quot;); <br/> <br/> // Use these two contexts <br/> URI context1 = f.createURI(&quot;<a href="http://example.org/context1">http://example.org/context1</a>&quot;); <br/> URI context2 = f.createURI(&quot;<a href="http://example.org/context2">http://example.org/context2</a>&quot;); <br/> URI[] contexts = new URI[] { context1, context2 }; <br/> <br/> // Add entity <br/> System.out.println(&quot;Adding entity of type Person&quot;); <br/> Resource entity = f.createBNode(); <br/> con.add(entity, RDF.TYPE, personClassUri, contexts); <br/> <br/> // Query and show contexts <br/> System.out.println(&quot;Repository contexts:&quot;); <br/> RepositoryResult&lt;Resource&gt; repoContexts = con.getContextIDs(); <br/> int conCount = 0; <br/> while (repoContexts.hasNext()) { <br/> ++conCount; <br/> Resource r = repoContexts.next(); <br/> System.out.println(r); <br/> } <br/> <br/> // Show results: expect two statements <br/> System.out.println(&quot;Showing entities of type Person&quot;); <br/> RepositoryResult&lt;Statement&gt; stmts = con.getStatements(null, <br/> RDF.TYPE, personClassUri, false); <br/> int stmtCount = 0; <br/> while (stmts.hasNext()) { <br/> ++stmtCount; <br/> System.out.println(stmts.next()); <br/> } <br/> stmts.close(); <br/> <br/> // Remove the newly added statements from all context <br/> con.remove(entity, RDF.TYPE, personClassUri); <br/> <br/> // Shut down <br/> System.out.println(&quot;Closing repository connection&quot;); <br/> con.close(); <br/> <br/> // Check result <br/> if (conCount == 2 &amp;&amp; stmtCount == 2) <br/> System.out <br/> .println(&quot;Pass, found expected context and statement count of 2 each&quot;); <br/> else <br/> System.out.println(&quot;Fail, expected 2 contexts but found &quot; <br/> + conCount + &quot;; expected 2 statements but found &quot; <br/> + stmtCount); <br/> <br/> } catch (Exception ex) { <br/> ex.printStackTrace(); <br/> } <br/> } <br/> } <br/> Also please check the implementation of the remote-repository version of the RepositoryConnection#add(Iteration&lt;? extends Statement, RepositoryException&gt; statements, Resource... contexts) method. I'm using that to push batches of statements over, using a single context . As far as I can tell, that context is ignored completely. Thanks. <br/> <br/> added testcase to RepositoryConnectionTest for this case. Case currently greenlines on memory stores but indeed fails on http repositories, which confirms this is a bug in sesame. managed to track this to a bug in the TransactionReader. Tracked to an issue in the TransactionSAXParser. Fix and unit test checked in, will be available for the next release. Thanks for reporting this. Thank you so much for the same-day fix! Do you have an estimated date for the next release? Chris, no fixed release date yet, I'm afraid, but &quot;Real Soon Now&quot;(TM). Tentatively scheduled for last week of May.