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Lucene example source code file (TestDateFilter.java)

This example Lucene source code file (TestDateFilter.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

city, datetools, datetools, document, document, io, ioexception, query, randomindexwriter, term, termquery, termquery, termrangefilter, termrangefilter, york

The Lucene TestDateFilter.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 org.apache.lucene.store.Directory;
import org.apache.lucene.util.LuceneTestCase;

import org.apache.lucene.document.DateTools;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.RandomIndexWriter;
import org.apache.lucene.index.Term;

import java.io.IOException;

/**
 * DateFilter JUnit tests.
 * 
 * 
 * @version $Revision: 1066722 $
 */
public class TestDateFilter extends LuceneTestCase {
 
  /**
   *
   */
  public void testBefore() throws IOException {
    // create an index
    Directory indexStore = newDirectory();
    RandomIndexWriter writer = new RandomIndexWriter(random, indexStore);
    
    long now = System.currentTimeMillis();
    
    Document doc = new Document();
    // add time that is in the past
    doc.add(newField("datefield", DateTools.timeToString(now - 1000,
        DateTools.Resolution.MILLISECOND), Field.Store.YES,
        Field.Index.NOT_ANALYZED));
    doc.add(newField("body", "Today is a very sunny day in New York City",
        Field.Store.YES, Field.Index.ANALYZED));
    writer.addDocument(doc);
    
    IndexReader reader = writer.getReader();
    writer.close();
    IndexSearcher searcher = newSearcher(reader);
    
    // filter that should preserve matches
    // DateFilter df1 = DateFilter.Before("datefield", now);
    TermRangeFilter df1 = new TermRangeFilter("datefield", DateTools
        .timeToString(now - 2000, DateTools.Resolution.MILLISECOND), DateTools
        .timeToString(now, DateTools.Resolution.MILLISECOND), false, true);
    // filter that should discard matches
    // DateFilter df2 = DateFilter.Before("datefield", now - 999999);
    TermRangeFilter df2 = new TermRangeFilter("datefield", DateTools
        .timeToString(0, DateTools.Resolution.MILLISECOND), DateTools
        .timeToString(now - 2000, DateTools.Resolution.MILLISECOND), true,
        false);
    
    // search something that doesn't exist with DateFilter
    Query query1 = new TermQuery(new Term("body", "NoMatchForThis"));
    
    // search for something that does exists
    Query query2 = new TermQuery(new Term("body", "sunny"));
    
    ScoreDoc[] result;
    
    // ensure that queries return expected results without DateFilter first
    result = searcher.search(query1, null, 1000).scoreDocs;
    assertEquals(0, result.length);
    
    result = searcher.search(query2, null, 1000).scoreDocs;
    assertEquals(1, result.length);
    
    // run queries with DateFilter
    result = searcher.search(query1, df1, 1000).scoreDocs;
    assertEquals(0, result.length);
    
    result = searcher.search(query1, df2, 1000).scoreDocs;
    assertEquals(0, result.length);
    
    result = searcher.search(query2, df1, 1000).scoreDocs;
    assertEquals(1, result.length);
    
    result = searcher.search(query2, df2, 1000).scoreDocs;
    assertEquals(0, result.length);
    searcher.close();
    reader.close();
    indexStore.close();
  }
  
  /**
   *
   */
  public void testAfter() throws IOException {
    // create an index
    Directory indexStore = newDirectory();
    RandomIndexWriter writer = new RandomIndexWriter(random, indexStore);
    
    long now = System.currentTimeMillis();
    
    Document doc = new Document();
    // add time that is in the future
    doc.add(newField("datefield", DateTools.timeToString(now + 888888,
        DateTools.Resolution.MILLISECOND), Field.Store.YES,
        Field.Index.NOT_ANALYZED));
    doc.add(newField("body", "Today is a very sunny day in New York City",
        Field.Store.YES, Field.Index.ANALYZED));
    writer.addDocument(doc);
    
    IndexReader reader = writer.getReader();
    writer.close();
    IndexSearcher searcher = newSearcher(reader);
    
    // filter that should preserve matches
    // DateFilter df1 = DateFilter.After("datefield", now);
    TermRangeFilter df1 = new TermRangeFilter("datefield", DateTools
        .timeToString(now, DateTools.Resolution.MILLISECOND), DateTools
        .timeToString(now + 999999, DateTools.Resolution.MILLISECOND), true,
        false);
    // filter that should discard matches
    // DateFilter df2 = DateFilter.After("datefield", now + 999999);
    TermRangeFilter df2 = new TermRangeFilter("datefield", DateTools
        .timeToString(now + 999999, DateTools.Resolution.MILLISECOND),
        DateTools.timeToString(now + 999999999,
            DateTools.Resolution.MILLISECOND), false, true);
    
    // search something that doesn't exist with DateFilter
    Query query1 = new TermQuery(new Term("body", "NoMatchForThis"));
    
    // search for something that does exists
    Query query2 = new TermQuery(new Term("body", "sunny"));
    
    ScoreDoc[] result;
    
    // ensure that queries return expected results without DateFilter first
    result = searcher.search(query1, null, 1000).scoreDocs;
    assertEquals(0, result.length);
    
    result = searcher.search(query2, null, 1000).scoreDocs;
    assertEquals(1, result.length);
    
    // run queries with DateFilter
    result = searcher.search(query1, df1, 1000).scoreDocs;
    assertEquals(0, result.length);
    
    result = searcher.search(query1, df2, 1000).scoreDocs;
    assertEquals(0, result.length);
    
    result = searcher.search(query2, df1, 1000).scoreDocs;
    assertEquals(1, result.length);
    
    result = searcher.search(query2, df2, 1000).scoreDocs;
    assertEquals(0, result.length);
    searcher.close();
    reader.close();
    indexStore.close();
  }
}

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