Package org.apache.lucene.search.suggest

Examples of org.apache.lucene.search.suggest.Lookup

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  private void runTest(Class<? extends Lookup> lookupClass,
      boolean supportsExactWeights) throws Exception {

    // Add all input keys.
    Lookup lookup = lookupClass.newInstance();
    TermFreq[] keys = new TermFreq[this.keys.length];
    for (int i = 0; i < keys.length; i++)
      keys[i] = new TermFreq(this.keys[i], (float) i);
    lookup.build(new TermFreqArrayIterator(keys));

    // Store the suggester.
    File storeDir = TEMP_DIR;
    lookup.store(storeDir);

    // Re-read it from disk.
    lookup = lookupClass.newInstance();
    lookup.load(storeDir);

    // Assert validity.
    float previous = Float.NEGATIVE_INFINITY;
    for (TermFreq k : keys) {
      Float val = (Float) lookup.get(k.term);
      assertNotNull(k.term, val);

      if (supportsExactWeights) {
        assertEquals(k.term, Float.valueOf(k.v), val);
      } else {
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  public void testConstructionTime() throws Exception {
    System.err.println("-- construction time");
    for (final Class<? extends Lookup> cls : benchmarkClasses) {
      BenchmarkResult result = measure(new Callable<Integer>() {
        public Integer call() throws Exception {
          final Lookup lookup = buildLookup(cls, dictionaryInput);         
          return lookup.hashCode();
        }
      });

      System.err.println(
          String.format(Locale.ENGLISH, "%-15s input: %d, time[ms]: %s",
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   */
  public void testStorageNeeds() throws Exception {
    System.err.println("-- RAM consumption");
    final RamUsageEstimator rue = new RamUsageEstimator();
    for (Class<? extends Lookup> cls : benchmarkClasses) {
      Lookup lookup = buildLookup(cls, dictionaryInput);
      System.err.println(
          String.format(Locale.ENGLISH, "%-15s size[B]:%,13d",
              lookup.getClass().getSimpleName(),
              rue.estimateRamUsage(lookup)));
    }
  }
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  /**
   * Create {@link Lookup} instance and populate it.
   */
  private Lookup buildLookup(Class<? extends Lookup> cls, TermFreq[] input) throws Exception {
    Lookup lookup = cls.newInstance();
    lookup.build(new TermFreqArrayIterator(input));
    return lookup;
  }
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    System.err.println(String.format(Locale.ENGLISH,
        "-- prefixes: %d-%d, num: %d, onlyMorePopular: %s",
        minPrefixLen, maxPrefixLen, num, onlyMorePopular));

    for (Class<? extends Lookup> cls : benchmarkClasses) {
      final Lookup lookup = buildLookup(cls, dictionaryInput);

      final List<String> input = new ArrayList<String>(benchmarkInput.size());
      for (TermFreq tf : benchmarkInput) {
        input.add(tf.term.substring(0, Math.min(tf.term.length(),
              minPrefixLen + random.nextInt(maxPrefixLen - minPrefixLen + 1))));
      }

      BenchmarkResult result = measure(new Callable<Integer>() {
        public Integer call() throws Exception {
          int v = 0;
          for (String term : input) {
            v += lookup.lookup(term, onlyMorePopular, num).size();
          }
          return v;
        }
      });

      System.err.println(
          String.format(Locale.ENGLISH, "%-15s queries: %d, time[ms]: %s, ~qps: %.0f",
              lookup.getClass().getSimpleName(),
              input.size(),
              result.average.toString(),
              input.size() / result.average.avg));
    }
  }
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  private void runTest(Class<? extends Lookup> lookupClass,
      boolean supportsExactWeights) throws Exception {

    // Add all input keys.
    Lookup lookup = lookupClass.newInstance();
    Input[] keys = new Input[this.keys.length];
    for (int i = 0; i < keys.length; i++)
      keys[i] = new Input(this.keys[i], i);
    lookup.build(new InputArrayIterator(keys));

    // Store the suggester.
    File storeDir = TEMP_DIR;
    lookup.store(new FileOutputStream(new File(storeDir, "lookup.dat")));

    // Re-read it from disk.
    lookup = lookupClass.newInstance();
    lookup.load(new FileInputStream(new File(storeDir, "lookup.dat")));

    // Assert validity.
    Random random = random();
    long previous = Long.MIN_VALUE;
    for (Input k : keys) {
      List<LookupResult> list = lookup.lookup(_TestUtil.bytesToCharSequence(k.term, random), false, 1);
      assertEquals(1, list.size());
      LookupResult lookupResult = list.get(0);
      assertNotNull(k.term.utf8ToString(), lookupResult.key);

      if (supportsExactWeights) {
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    System.err.println("-- construction time");
    for (final Class<? extends Lookup> cls : benchmarkClasses) {
      BenchmarkResult result = measure(new Callable<Integer>() {
        @Override
        public Integer call() throws Exception {
          final Lookup lookup = buildLookup(cls, dictionaryInput);         
          return lookup.hashCode();
        }
      });

      System.err.println(
          String.format(Locale.ROOT, "%-15s input: %d, time[ms]: %s",
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   * Test memory required for the storage.
   */
  public void testStorageNeeds() throws Exception {
    System.err.println("-- RAM consumption");
    for (Class<? extends Lookup> cls : benchmarkClasses) {
      Lookup lookup = buildLookup(cls, dictionaryInput);
      long sizeInBytes = lookup.sizeInBytes();
      System.err.println(
          String.format(Locale.ROOT, "%-15s size[B]:%,13d",
              lookup.getClass().getSimpleName(),
              sizeInBytes));
    }
  }
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  /**
   * Create {@link Lookup} instance and populate it.
   */
  private Lookup buildLookup(Class<? extends Lookup> cls, Input[] input) throws Exception {
    Lookup lookup = null;
    try {
      lookup = cls.newInstance();
    } catch (InstantiationException e) {
      Analyzer a = new MockAnalyzer(random, MockTokenizer.KEYWORD, false);
      if (cls == AnalyzingInfixSuggester.class) {
        lookup = new AnalyzingInfixSuggester(TEST_VERSION_CURRENT, _TestUtil.getTempDir("LookupBenchmarkTest"), a);
      } else {
        Constructor<? extends Lookup> ctor = cls.getConstructor(Analyzer.class);
        lookup = ctor.newInstance(a);
      }
    }
    lookup.build(new InputArrayIterator(input));
    return lookup;
  }
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    System.err.println(String.format(Locale.ROOT,
        "-- prefixes: %d-%d, num: %d, onlyMorePopular: %s",
        minPrefixLen, maxPrefixLen, num, onlyMorePopular));

    for (Class<? extends Lookup> cls : benchmarkClasses) {
      final Lookup lookup = buildLookup(cls, dictionaryInput);

      final List<String> input = new ArrayList<String>(benchmarkInput.size());
      for (Input tf : benchmarkInput) {
        String s = tf.term.utf8ToString();
        String sub = s.substring(0, Math.min(s.length(),
            minPrefixLen + random.nextInt(maxPrefixLen - minPrefixLen + 1)));
        input.add(sub);
      }

      BenchmarkResult result = measure(new Callable<Integer>() {
        @Override
        public Integer call() throws Exception {
          int v = 0;
          for (String term : input) {
            v += lookup.lookup(term, onlyMorePopular, num).size();
          }
          return v;
        }
      });

      System.err.println(
          String.format(Locale.ROOT, "%-15s queries: %d, time[ms]: %s, ~kQPS: %.0f",
              lookup.getClass().getSimpleName(),
              input.size(),
              result.average.toString(),
              input.size() / result.average.avg));
    }
  }
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Related Classes of org.apache.lucene.search.suggest.Lookup

  • org.apache.lucene.search.spell.TermFreqIterator
  • org.apache.lucene.search.suggest.LookupBenchmarkTest
  • org.apache.lucene.search.suggest.PersistenceTest
  • org.apache.lucene.store.DataInput
  • org.apache.lucene.store.DataOutput
  • org.apache.lucene.store.InputStreamDataInput
  • org.apache.lucene.store.OutputStreamDataOutput
  • org.apache.lucene.util.BytesRefIterator
  • org.elasticsearch.search.suggest.completion.CompletionSuggester
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