Lucene example source code file (TestMultiValuedNumericRangeQuery.java)

This example Lucene source code file (TestMultiValuedNumericRangeQuery.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Lucene tags/keywords

decimalformat, document, document, exception, indexreader, mockanalyzer, numericfield, numericrangequery, randomindexwriter, randomindexwriter, termrangequery, termrangequery, text, topdocs, topdocs, util

The Lucene TestMultiValuedNumericRangeQuery.java source code

package org.apache.lucene.search;

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.Locale;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;

import org.apache.lucene.analysis.MockAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.NumericField;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.RandomIndexWriter;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.util._TestUtil;

public class TestMultiValuedNumericRangeQuery extends LuceneTestCase {

  /** Tests NumericRangeQuery on a multi-valued field (multiple numeric values per document).
   * This test ensures, that a classical TermRangeQuery returns exactly the same document numbers as
   * NumericRangeQuery (see SOLR-1322 for discussion) and the multiple precision terms per numeric value
   * do not interfere with multiple numeric values.
   */
  public void testMultiValuedNRQ() throws Exception {
    Directory directory = newDirectory();
    RandomIndexWriter writer = new RandomIndexWriter(random, directory,
        newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random))
        .setMaxBufferedDocs(_TestUtil.nextInt(random, 50, 1000)));
    
    DecimalFormat format = new DecimalFormat("00000000000", new DecimalFormatSymbols(Locale.US));
    
    int num = atLeast(500);
    for (int l = 0; l < num; l++) {
      Document doc = new Document();
      for (int m=0, c=random.nextInt(10); m<=c; m++) {
        int value = random.nextInt(Integer.MAX_VALUE);
        doc.add(newField("asc", format.format(value), Field.Store.NO, Field.Index.NOT_ANALYZED));
        doc.add(new NumericField("trie", Field.Store.NO, true).setIntValue(value));
      }
      writer.addDocument(doc);
    }
    IndexReader reader = writer.getReader();
    writer.close();
    
    IndexSearcher searcher=newSearcher(reader);
    num = atLeast(50);
    for (int i = 0; i < num; i++) {
      int lower=random.nextInt(Integer.MAX_VALUE);
      int upper=random.nextInt(Integer.MAX_VALUE);
      if (lower>upper) {
        int a=lower; lower=upper; upper=a;
      }
      TermRangeQuery cq=new TermRangeQuery("asc", format.format(lower), format.format(upper), true, true);
      NumericRangeQuery<Integer> tq=NumericRangeQuery.newIntRange("trie", lower, upper, true, true);
      TopDocs trTopDocs = searcher.search(cq, 1);
      TopDocs nrTopDocs = searcher.search(tq, 1);
      assertEquals("Returned count for NumericRangeQuery and TermRangeQuery must be equal", trTopDocs.totalHits, nrTopDocs.totalHits );
    }
    searcher.close();
    reader.close();
    directory.close();
  }
  
}