com.mathworks.xzheng.advsearching.TimeLimitingCollectorTest.java Source code

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Here is the source code for com.mathworks.xzheng.advsearching.TimeLimitingCollectorTest.java

Source

package com.mathworks.xzheng.advsearching;

/**
 * Copyright Manning Publications Co.
 *
 * Licensed 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 lan      
*/

import junit.framework.TestCase;

import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.search.Collector;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.MatchAllDocsQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TimeLimitingCollector;
import org.apache.lucene.search.TimeLimitingCollector.TimeExceededException;
import org.apache.lucene.search.TopScoreDocCollector;
import org.apache.lucene.store.Directory;

import com.mathworks.xzheng.common.TestUtil;

// From chapter 5
public class TimeLimitingCollectorTest extends TestCase {
    public void testTimeLimitingCollector() throws Exception {
        Directory dir = TestUtil.getBookIndexDirectory();
        IndexSearcher searcher = new IndexSearcher(DirectoryReader.open(dir));
        Query q = new MatchAllDocsQuery();
        int numAllBooks = TestUtil.hitCount(searcher, q);

        TopScoreDocCollector topDocs = TopScoreDocCollector.create(10, false);
        Collector collector = new TimeLimitingCollector(topDocs, // #A
                null, 1000); // #A
        try {
            searcher.search(q, collector);
            assertEquals(numAllBooks, topDocs.getTotalHits()); // #B
        } catch (TimeExceededException tee) { // #C
            System.out.println("Too much time taken."); // #C
        } // #C

        dir.close();
    }
}

/*
  #A Wrap any existing Collector
  #B If no timeout, we should have all hits
  #C Timeout hit
*/