Examples of org.apache.lucene.search.Query

org.apache.lucene.search.Query
The abstract base class for queries.
Instantiable subclasses are:
- {@link TermQuery}
- {@link MultiTermQuery}
- {@link BooleanQuery}
- {@link WildcardQuery}
- {@link PhraseQuery}
- {@link PrefixQuery}
- {@link MultiPhraseQuery}
- {@link FuzzyQuery}
- {@link TermRangeQuery}
- {@link NumericRangeQuery}
- {@link org.apache.lucene.search.spans.SpanQuery}
A parser for queries is contained in:
- {@link org.apache.lucene.queryParser.QueryParser QueryParser}

  }


  // Test that FieldScoreQuery returns docs with expected score.
  private void doTestExactScore (String field, FieldScoreQuery.Type tp) throws Exception {
    IndexSearcher s = new IndexSearcher(dir, true);
    Query q = new FieldScoreQuery(field,tp);
    TopDocs td = s.search(q,null,1000);
    assertEquals("All docs should be matched!",N_DOCS,td.totalHits);
    ScoreDoc sd[] = td.scoreDocs;
    for (ScoreDoc aSd : sd) {
      float score = aSd.score;

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        setUseCompoundFile(mp, useCompoundFile);
      }
      IndexWriter writer = new IndexWriter(dir, conf);
      writer.close();
      Term searchTerm = new Term("content", "aaa");        
      Query query = new TermQuery(searchTerm);


      for(int i=0;i<N+1;i++) {
        if (VERBOSE) {
          System.out.println("\nTEST: cycle i=" + i);
        }

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        setUseCompoundFile(mp, useCompoundFile);
      }
      IndexWriter writer = new IndexWriter(dir, conf);
      writer.close();
      Term searchTerm = new Term("content", "aaa");        
      Query query = new TermQuery(searchTerm);


      for(int i=0;i<N+1;i++) {


        conf = newIndexWriterConfig(
            TEST_VERSION_CURRENT, new MockAnalyzer(random))

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      final IndexSearcher indexSearcher = newSearcher(indexReader);
      try {
        // final DisjunctionMaxQuery query = new DisjunctionMaxQuery(1);
        // query.add(new SpanTermQuery(new Term(FIELD, "{fox}")));
        // query.add(new SpanTermQuery(new Term(FIELD, "fox")));
        final Query phraseQuery = new SpanNearQuery(new SpanQuery[] {
            new SpanTermQuery(new Term(FIELD, "the")),
            new SpanTermQuery(new Term(FIELD, "fox"))}, 0, true);


        TopDocs hits = indexSearcher.search(phraseQuery, 1);
        assertEquals(1, hits.totalHits);

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      final IndexSearcher indexSearcher = newSearcher(indexReader);
      try {
        // final DisjunctionMaxQuery query = new DisjunctionMaxQuery(1);
        // query.add(new SpanTermQuery(new Term(FIELD, "the")));
        // query.add(new SpanTermQuery(new Term(FIELD, "fox")));
        final Query phraseQuery = new SpanNearQuery(new SpanQuery[] {
            new SpanTermQuery(new Term(FIELD, "the")),
            new SpanTermQuery(new Term(FIELD, "fox"))}, 0, true);


        TopDocs hits = indexSearcher.search(phraseQuery, 1);
        assertEquals(1, hits.totalHits);

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    QueryParser parser = new QueryParser(TEST_VERSION_CURRENT, FIELD_NAME, new StandardAnalyzer(TEST_VERSION_CURRENT));


    // Verify that a query against the default field results in text being
    // highlighted
    // regardless of the field name.
    Query q = parser.parse("\"world Flatland\"~3");
    String expected = "I call our <B>world</B> <B>Flatland</B>, not because we call it so,";
    String observed = highlightField(q, "SOME_FIELD_NAME", s1);
    if (VERBOSE) System.out.println("Expected: \"" + expected + "\n" + "Observed: \"" + observed);
    assertEquals("Query in the default field results in text for *ANY* field being highlighted",
        expected, observed);

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    String f2c = f2 + ":";
    String q = "(" + f1c + ph1 + " OR " + f2c + ph1 + ") AND (" + f1c + ph2
        + " OR " + f2c + ph2 + ")";
    Analyzer analyzer = new MockAnalyzer(random, MockTokenizer.WHITESPACE, false);
    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, f1, analyzer);
    Query query = qp.parse(q);


    QueryScorer scorer = new QueryScorer(query, f1);
    scorer.setExpandMultiTermQuery(false);


    Highlighter h = new Highlighter(this, scorer);

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    // Not sure we can assert anything here - just running to check we dont
    // throw any exceptions
  }


  public void testSpanHighlighting() throws Exception {
    Query query1 = new SpanNearQuery(new SpanQuery[] {
        new SpanTermQuery(new Term(FIELD_NAME, "wordx")),
        new SpanTermQuery(new Term(FIELD_NAME, "wordy")) }, 1, false);
    Query query2 = new SpanNearQuery(new SpanQuery[] {
        new SpanTermQuery(new Term(FIELD_NAME, "wordy")),
        new SpanTermQuery(new Term(FIELD_NAME, "wordc")) }, 1, false);
    BooleanQuery bquery = new BooleanQuery();
    bquery.add(query1, Occur.SHOULD);
    bquery.add(query2, Occur.SHOULD);

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        Analyzer analyzer = new SynonymAnalyzer(synonyms);
        String srchkey = "football";


        String s = "football-soccer in the euro 2004 footie competition";
        QueryParser parser = new QueryParser(TEST_VERSION_CURRENT, "bookid", analyzer);
        Query query = parser.parse(srchkey);


        TokenStream tokenStream = analyzer.tokenStream(null, new StringReader(s));


        Highlighter highlighter = getHighlighter(query, null, tokenStream, HighlighterTest.this);

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        if (searcher != null) searcher.close();
        searcher = new IndexSearcher(ramDir, true);
        Analyzer analyzer = new StandardAnalyzer(TEST_VERSION_CURRENT);


        QueryParser parser = new QueryParser(TEST_VERSION_CURRENT, FIELD_NAME, analyzer);
        Query query = parser.parse("JF? or Kenned*");
        if (VERBOSE) System.out.println("Searching with primitive query");
        // forget to set this and...
        // query=query.rewrite(reader);
        TopDocs hits = searcher.search(query, null, 1000);

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