aos.lucene.search.advanced.TimeLimitingCollectorTest.java Source code

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Here is the source code for aos.lucene.search.advanced.TimeLimitingCollectorTest.java

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package aos.lucene.search.advanced;

import junit.framework.TestCase;

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

import io.aos.lucene.util.TestUtil;

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

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

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