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https://issues.apache.org/jira/browse/LUCENE-5367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13856264#comment-13856264
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Lucien Pereira commented on LUCENE-5367:
----------------------------------------
Shai,
Sorry for the delay. It it happens when a given document is added several times
:
{code:title=Lucene5367.java|borderStyle=solid}
package testcase;
import java.io.File;
import java.util.List;
import org.apache.lucene.analysis.core.KeywordAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.facet.index.FacetFields;
import org.apache.lucene.facet.taxonomy.CategoryPath;
import org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyWriter;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.NIOFSDirectory;
import org.apache.lucene.util.Version;
public class Lucene5367 {
public static void main(String[] args) throws Exception {
Directory indexDirectory = new NIOFSDirectory(new
File("~/index"));
Directory taxonomyDirectory = new NIOFSDirectory(new
File("~/taxonomy"));
Document document = new Document();
IndexWriter indexWriter = new IndexWriter(indexDirectory,
new IndexWriterConfig(Version.LUCENE_46, new
KeywordAnalyzer()));
DirectoryTaxonomyWriter taxonomyWriter = new
DirectoryTaxonomyWriter(
taxonomyDirectory);
List<CategoryPath> categories = java.util.Collections
.singletonList(new CategoryPath("home",
"root"));
FacetFields facetFields = new FacetFields(taxonomyWriter);
facetFields.addFields(document, categories);
taxonomyWriter.close();
indexWriter.addDocument(document);
indexWriter.addDocument(document);
indexWriter.close();
}
}
{code}
Regards,
Lucien
> NoSuchElementException occurs when org.apache.lucene.facet.index.FacetFields
> is used.
> -------------------------------------------------------------------------------------
>
> Key: LUCENE-5367
> URL: https://issues.apache.org/jira/browse/LUCENE-5367
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/facet
> Affects Versions: 4.2.1, 4.6
> Reporter: Lucien Pereira
>
> Hi,
> When I use the API as below :
> {code}
> List<CategoryPath> categories = Collections.<CategoryPath>singletonList(new
> CategoryPath(path.toArray(new String[path.size()])));
> FacetFields facetFields = new FacetFields(taxonomyWriter);
> facetFields.addFields(document, categories);
> taxonomyWriter.commit();
> {code}
> An exception occurs :
> {quote}
> java.util.NoSuchElementException
> at java.util.Collections$1.next(Collections.java:3302)
> at
> org.apache.lucene.facet.index.DrillDownStream.reset(DrillDownStream.java:78)
> at
> org.apache.lucene.index.DocInverterPerField.processFields(DocInverterPerField.java:97)
> at
> org.apache.lucene.index.DocFieldProcessor.processDocument(DocFieldProcessor.java:248)
> at
> org.apache.lucene.index.DocumentsWriterPerThread.updateDocument(DocumentsWriterPerThread.java:253)
> at
> org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:453)
> at
> org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1520)
> at
> org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1190)
> at
> org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1171)
> {quote}
> Seems likes this is due to multiple calls to
> org.apache.lucene.facet.index.DrillDownStream#reset which invoques #next() on
> an 'used' iterator.
> Regards,
> Lucien
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