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* http://www.apache.org/licenses/LICENSE-2.0
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package org.elasticsearch.common.lucene.search.morelikethis;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.TextField;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.RAMDirectory;
import org.elasticsearch.common.lucene.Lucene;
import org.elasticsearch.common.lucene.search.MoreLikeThisQuery;
import org.elasticsearch.test.ESTestCase;
import static org.hamcrest.Matchers.equalTo;
public class MoreLikeThisQueryTests extends ESTestCase {
public void testSimple() throws Exception {
Directory dir = new RAMDirectory();
IndexWriter indexWriter = new IndexWriter(dir, new IndexWriterConfig(Lucene.STANDARD_ANALYZER));
indexWriter.commit();
Document document = new Document();
document.add(new TextField("_id", "1", Field.Store.YES));
document.add(new TextField("text", "lucene", Field.Store.YES));
indexWriter.addDocument(document);
document = new Document();
document.add(new TextField("_id", "2", Field.Store.YES));
document.add(new TextField("text", "lucene release", Field.Store.YES));
indexWriter.addDocument(document);
IndexReader reader = DirectoryReader.open(indexWriter);
IndexSearcher searcher = new IndexSearcher(reader);
MoreLikeThisQuery mltQuery = new MoreLikeThisQuery("lucene", new String[]{"text"}, Lucene.STANDARD_ANALYZER);
mltQuery.setLikeText("lucene");
mltQuery.setMinTermFrequency(1);
mltQuery.setMinDocFreq(1);
long count = searcher.count(mltQuery);
assertThat(count, equalTo(2L));
reader.close();
indexWriter.close();
}
}