Examples of org.apache.lucene.search.spans.SpanFirstQuery

org.apache.lucene.search.spans.SpanFirstQuery
Matches spans near the beginning of a field.

  };
  
  private static Query[] getPrebuiltQueries(String field) {
    //  be wary of unanalyzed text
    return new Query[] {
        new SpanFirstQuery(new SpanTermQuery(new Term(field, "ford")), 5),
        new SpanNearQuery(new SpanQuery[]{new SpanTermQuery(new Term(field, "night")), new SpanTermQuery(new Term(field, "trading"))}, 4, false),
        new SpanNearQuery(new SpanQuery[]{new SpanFirstQuery(new SpanTermQuery(new Term(field, "ford")), 10), new SpanTermQuery(new Term(field, "credit"))}, 10, false),
        new WildcardQuery(new Term(field, "fo*")),
    };
  }

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        setString(n, "text", getString(n, "text") + ", " + soq.getClauses().length + " clauses");
        for (SpanQuery sq1 : soq.getClauses()) {
          _explainStructure(n, sq1);
        }
      } else if (sqlass == SpanFirstQuery.class) {
        SpanFirstQuery sfq = (SpanFirstQuery)sq;
        setString(n, "text", getString(n, "text") + ", end=" + sfq.getEnd() + ", match:");
        _explainStructure(n, sfq.getMatch());
      } else if (q instanceof SpanNearQuery) { // catch also known subclasses
        SpanNearQuery snq = (SpanNearQuery)sq;
        setString(n, "text", getString(n, "text") + ", slop=" + snq.getSlop());
        if (snq instanceof PayloadNearQuery) {
          try {

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    return new SpanNearQuery(new SpanQuery[] { s, m, e }, slop, inOrder);
  }
  
  /** MACRO for SpanFirst(SpanTermQuery) */
  public SpanFirstQuery sf(String s, int b) {
    return new SpanFirstQuery(st(s), b);
  }

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    writer.optimize();
    writer.close();


    IndexSearcher searcher = new IndexSearcher(directory, true);
    SpanQuery srq = new SpanMultiTermQueryWrapper<RegexQuery>(new RegexQuery(new Term("field", "aut.*")));
    SpanFirstQuery sfq = new SpanFirstQuery(srq, 1);
    // SpanNearQuery query = new SpanNearQuery(new SpanQuery[] {srq, stq}, 6,
    // true);
    int numHits = searcher.search(sfq, null, 1000).totalHits;
    assertEquals(1, numHits);
    searcher.close();

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    writer.optimize();
    writer.close();


    IndexSearcher searcher = new IndexSearcher(directory, true);
    SpanRegexQuery srq = new SpanRegexQuery(new Term("field", "aut.*"));
    SpanFirstQuery sfq = new SpanFirstQuery(srq, 1);
    // SpanNearQuery query = new SpanNearQuery(new SpanQuery[] {srq, stq}, 6,
    // true);
    int numHits = searcher.search(sfq, null, 1000).totalHits;
    assertEquals(1, numHits);
    searcher.close();

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  private static Query[] getPrebuiltQueries(String field) {
    WildcardQuery wcq = new WildcardQuery(new Term(field, "fo*"));
    wcq .setRewriteMethod(MultiTermQuery.CONSTANT_SCORE_FILTER_REWRITE);
    // be wary of unanalyzed text
    return new Query[] {
        new SpanFirstQuery(new SpanTermQuery(new Term(field, "ford")), 5),
        new SpanNearQuery(new SpanQuery[] {
            new SpanTermQuery(new Term(field, "night")),
            new SpanTermQuery(new Term(field, "trading")) }, 4, false),
        new SpanNearQuery(new SpanQuery[] {
            new SpanFirstQuery(new SpanTermQuery(new Term(field, "ford")), 10),
            new SpanTermQuery(new Term(field, "credit")) }, 10, false), wcq, };
  }

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    writer.close();


    IndexReader reader = DirectoryReader.open(directory);
    IndexSearcher searcher = newSearcher(reader);
    SpanQuery srq = new SpanMultiTermQueryWrapper<RegexQuery>(new RegexQuery(new Term("field", "aut.*")));
    SpanFirstQuery sfq = new SpanFirstQuery(srq, 1);
    // SpanNearQuery query = new SpanNearQuery(new SpanQuery[] {srq, stq}, 6,
    // true);
    int numHits = searcher.search(sfq, null, 1000).totalHits;
    assertEquals(1, numHits);
    reader.close();

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      protected Analyzer getIndexAnalyzer(String field) {
        return analyzer;
      }
    };
    SpanQuery childQuery = new SpanMultiTermQueryWrapper<WildcardQuery>(new WildcardQuery(new Term("body", "te*")));
    Query query = new SpanFirstQuery(childQuery, 1000000);
    TopDocs topDocs = searcher.search(query, null, 10, Sort.INDEXORDER);
    assertEquals(2, topDocs.totalHits);
    String snippets[] = highlighter.highlight("body", query, searcher, topDocs);
    assertEquals(2, snippets.length);
    assertEquals("This is a <b>test</b>.", snippets[0]);

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    writer.optimize();
    writer.close();


    IndexSearcher searcher = new IndexSearcher(directory, true);
    SpanRegexQuery srq = new SpanRegexQuery(new Term("field", "aut.*"));
    SpanFirstQuery sfq = new SpanFirstQuery(srq, 1);
    // SpanNearQuery query = new SpanNearQuery(new SpanQuery[] {srq, stq}, 6,
    // true);
    int numHits = searcher.search(sfq, null, 1000).totalHits;
    assertEquals(1, numHits);
  }

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    return new SpanNearQuery(new SpanQuery[] { s, m, e }, slop, inOrder);
  }
  
  /** MACRO for SpanFirst(SpanTermQuery) */
  public SpanFirstQuery sf(String s, int b) {
    return new SpanFirstQuery(st(s), b);
  }

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