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[rdf4j-dev] issue #220 suit tests LuceneConnection wrapper to make it InferencerConnection ?
Sorry I re-sent e-mail but forgot to add title.


For purpose of fixing the issue #220-lucene-matcher (link https://github.com/jgrzebyta/rdf4j/tree/issues/%23220-lucene-matches) I built a suit tests.

In a particular test (ElasticsearchFunctionSailSPARQLTest) I created sail hierarchies:

MemeoryStore -> LuceneSail -> SpinSail -> SailRepository


I have an error message; org.eclipse.rdf4j.sail.lucene.LuceneSailConnection cannot be cast to org.eclipse.rdf4j.sail.inferencer.InferencerConnection


My question is: can I wrap LuceneSailConnection to make it InferencerConnection ?

I really need both (LuceneSail and SpinSail engines) because of Mark Hale's class org.eclipse.rdf4j.sail.lucene.QueryTupleFunction which will replace old Lucene search approach.



full stacktrace is:
java.lang.ClassCastException: org.eclipse.rdf4j.sail.lucene.LuceneSailConnection cannot be cast to org.eclipse.rdf4j.sail.inferencer.InferencerConnection
    at org.eclipse.rdf4j.sail.spin.SpinSail.getConnection(SpinSail.java:142)
    at org.eclipse.rdf4j.sail.spin.SpinSail.initialize(SpinSail.java:155)
    at org.eclipse.rdf4j.repository.sail.SailRepository.initializeInternal(SailRepository.java:151)
    at org.eclipse.rdf4j.repository.base.AbstractRepository.initialize(AbstractRepository.java:31)
    at org.eclipse.rdf4j.sail.lucene.AbstractFunctionLuceneSailSPARQLTest.setUp(AbstractFunctionLuceneSailSPARQLTest.java:85)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:264)
    at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:153)
    at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:124)
    at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:200)
    at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:153)
    at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)

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