Package org.apache.lucene.search.suggest

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

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  public void testNonExactFirst() throws Exception {

    WFSTCompletionLookup suggester = new WFSTCompletionLookup(false);

    suggester.build(new TermFreqArrayIterator(new TermFreq[] {
          new TermFreq("x y", 20),
          new TermFreq("x", 2),
        }));

    for(int topN=1;topN<4;topN++) {
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      slowCompletor.put(s, (long)weight);
      keys[i] = new TermFreq(s, weight);
    }

    WFSTCompletionLookup suggester = new WFSTCompletionLookup(false);
    suggester.build(new TermFreqArrayIterator(keys));

    Random random = new Random(random().nextLong());
    for (String prefix : allPrefixes) {
      final int topN = _TestUtil.nextInt(random, 1, 10);
      List<LookupResult> r = suggester.lookup(_TestUtil.stringToCharSequence(prefix, random), false, topN);
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    BytesRef key2 = new BytesRef(3);
    key1.length = 3;

    WFSTCompletionLookup suggester = new WFSTCompletionLookup(false);

    suggester.build(new TermFreqArrayIterator(new TermFreq[] {
          new TermFreq(key1, 50),
          new TermFreq(key2, 50),
        }));
  }
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  }

  public void testEmpty() throws Exception {
    WFSTCompletionLookup suggester = new WFSTCompletionLookup(false);

    suggester.build(new TermFreqArrayIterator(new TermFreq[0]));
    List<LookupResult> result = suggester.lookup("a", false, 20);
    assertTrue(result.isEmpty());
  }
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        new TermFreq("barbar", 12),
        new TermFreq("barbara", 6)
    };
   
    AnalyzingSuggester suggester = new AnalyzingSuggester(new MockAnalyzer(random(), MockTokenizer.KEYWORD, false));
    suggester.build(new TermFreqArrayIterator(keys));
   
    // top N of 2, but only foo is available
    List<LookupResult> results = suggester.lookup(_TestUtil.stringToCharSequence("f", random()), false, 2);
    assertEquals(1, results.size());
    assertEquals("foo", results.get(0).key.toString());
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    };
   
    Analyzer standard = new MockAnalyzer(random(), MockTokenizer.WHITESPACE, true, MockTokenFilter.ENGLISH_STOPSET);
    AnalyzingSuggester suggester = new AnalyzingSuggester(standard);
    suggester.setPreservePositionIncrements(false);
    suggester.build(new TermFreqArrayIterator(keys));
   
    List<LookupResult> results = suggester.lookup(_TestUtil.stringToCharSequence("the ghost of chris", random()), false, 1);
    assertEquals(1, results.size());
    assertEquals("the ghost of christmas past", results.get(0).key.toString());
    assertEquals(50, results.get(0).value, 0.01F);
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  }

  public void testEmpty() throws Exception {
    Analyzer standard = new MockAnalyzer(random(), MockTokenizer.WHITESPACE, true, MockTokenFilter.ENGLISH_STOPSET);
    AnalyzingSuggester suggester = new AnalyzingSuggester(standard);
    suggester.build(new TermFreqArrayIterator(new TermFreq[0]));

    List<LookupResult> result = suggester.lookup("a", false, 20);
    assertTrue(result.isEmpty());
  }
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    int options = 0;

    Analyzer a = new MockAnalyzer(random());
    AnalyzingSuggester suggester = new AnalyzingSuggester(a, a, options, 256, -1);
    suggester.build(new TermFreqArrayIterator(keys));
    // TODO: would be nice if "ab " would allow the test to
    // pass, and more generally if the analyzer can know
    // that the user's current query has ended at a word,
    // but, analyzers don't produce SEP tokens!
    List<LookupResult> r = suggester.lookup(_TestUtil.stringToCharSequence("ab c", random()), false, 2);
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        new TermFreq("wifi network is slow", 50),
        new TermFreq("wi fi network is fast", 10),
    };
    //AnalyzingSuggester suggester = new AnalyzingSuggester(analyzer, AnalyzingSuggester.EXACT_FIRST, 256, -1);
    AnalyzingSuggester suggester = new AnalyzingSuggester(analyzer);
    suggester.build(new TermFreqArrayIterator(keys));
    List<LookupResult> results = suggester.lookup("wifi network", false, 10);
    if (VERBOSE) {
      System.out.println("Results: " + results);
    }
    assertEquals(2, results.size());
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    TermFreq keys[] = new TermFreq[] {
        new TermFreq("ab xc", 50),
        new TermFreq("ba xd", 50),
    };
    AnalyzingSuggester suggester = new AnalyzingSuggester(analyzer);
    suggester.build(new TermFreqArrayIterator(keys));
    List<LookupResult> results = suggester.lookup("ab x", false, 1);
    assertTrue(results.size() == 1);
  }
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Related Classes of org.apache.lucene.search.suggest.TermFreqArrayIterator

  • org.apache.lucene.search.suggest.analyzing.AnalyzingSuggesterTest
  • org.apache.lucene.search.suggest.analyzing.FuzzySuggesterTest
  • org.apache.lucene.search.suggest.fst.FSTLookupTest
  • org.apache.lucene.search.suggest.fst.WFSTCompletionTest
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