org.netbeans.modules.parsing.lucene.support.Index$IndexClosedException
   at org.netbeans.modules.parsing.lucene.LuceneIndex$DirCache.checkPreconditions(LuceneIndex.java:981)
   at org.netbeans.modules.parsing.lucene.LuceneIndex$DirCache.getReader(LuceneIndex.java:863)
   at org.netbeans.modules.parsing.lucene.LuceneIndex$DirCache.acquireReader(LuceneIndex.java:845)
   at org.netbeans.modules.parsing.lucene.LuceneIndex.query(LuceneIndex.java:162)
   at org.netbeans.modules.parsing.lucene.DocumentIndexImpl.query(DocumentIndexImpl.java:252)
   at org.netbeans.modules.parsing.impl.indexing.lucene.LayeredDocumentIndex.query(LayeredDocumentIndex.java:127)
   at org.netbeans.modules.parsing.spi.indexing.support.QuerySupport$1.call(QuerySupport.java:286)
   at org.netbeans.modules.parsing.spi.indexing.support.QuerySupport$1.call(QuerySupport.java:252)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:168)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:72)
   at org.netbeans.modules.parsing.spi.indexing.support.QuerySupport.query(QuerySupport.java:252)
   at org.netbeans.modules.hibernate.util.HibernateUtil.searchSourceFiles(HibernateUtil.java:722)
   at org.netbeans.modules.hibernate.util.HibernateUtil.getAllHibernateMappingFileObjects(HibernateUtil.java:241)
   at org.netbeans.modules.hibernate.service.spi.HibernateEnvironmentImpl.getAllHibernateMappingFileObjects(HibernateEnvironmentImpl.java:246)
   at org.netbeans.modules.hibernate.refactoring.HibernateRenamePlugin.prepare(HibernateRenamePlugin.java:138)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare2(AbstractRefactoring.java:426)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare(AbstractRefactoring.java:410)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.prepare(AbstractRefactoring.java:221)
   at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$Prepare.run(ParametersPanel.java:1011)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1452)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2032)