Examples of org.apache.lucene.queryParser.standard.StandardQueryParser

org.apache.lucene.queryParser.standard.StandardQueryParser

query config handler returned by {@link StandardQueryParser} is a{@link StandardQueryConfigHandler}
queryParserHelper.getQueryConfigHandler().setAnalyzer(new WhitespaceAnalyzer());

The syntax for query strings is as follows (copied from the old QueryParser javadoc):

A Query is a series of clauses. A clause may be prefixed by:

a plus (+) or a minus (-) sign, indicating that the clause is required or prohibited respectively; or
a term followed by a colon, indicating the field to be searched. This enables one to construct queries which search multiple fields.

A clause may be either:

a term, indicating all the documents that contain this term; or
a nested query, enclosed in parentheses. Note that this may be used with a +/- prefix to require any of a set of terms.

Thus, in BNF, the query grammar is:

 Query  ::= ( Clause ) Clause ::= ["+", "-"] [<TERM> ":"] ( <TERM> | "(" Query ")" )

Examples of appropriately formatted queries can be found in the query syntax documentation.

The text parser used by this helper is a {@link StandardSyntaxParser}.

The query node processor used by this helper is a {@link StandardQueryNodeProcessorPipeline}.

The builder used by this helper is a {@link StandardQueryTreeBuilder}.

@see StandardQueryParser @see StandardQueryConfigHandler @see StandardSyntaxParser @see StandardQueryNodeProcessorPipeline @see StandardQueryTreeBuilder

          expectedPositions[i], pos[i]);
    }
  }


  public void testMatchAllDocs() throws Exception {
    StandardQueryParser qp = new StandardQueryParser();
    qp.setAnalyzer(new MockAnalyzer(random, MockTokenizer.WHITESPACE, false));


    assertEquals(new MatchAllDocsQuery(), qp.parse("*:*", "field"));
    assertEquals(new MatchAllDocsQuery(), qp.parse("(*:*)", "field"));
    BooleanQuery bq = (BooleanQuery) qp.parse("+*:* -*:*", "field");
    assertTrue(bq.getClauses()[0].getQuery() instanceof MatchAllDocsQuery);
    assertTrue(bq.getClauses()[1].getQuery() instanceof MatchAllDocsQuery);
  }

    assertTrue(bq.getClauses()[1].getQuery() instanceof MatchAllDocsQuery);
  }


  private void assertHits(int expected, String query, IndexSearcher is)
      throws IOException, QueryNodeException {
    StandardQueryParser qp = new StandardQueryParser();
    qp.setAnalyzer(new MockAnalyzer(random, MockTokenizer.WHITESPACE, false));
    qp.setLocale(Locale.ENGLISH);


    Query q = qp.parse(query, "date");
    ScoreDoc[] hits = is.search(q, null, 1000).scoreDocs;
    assertEquals(expected, hits.length);
  }

    doc.add(newField("field", "", Field.Store.NO, Field.Index.ANALYZED));
    w.addDocument(doc);
    IndexReader r = IndexReader.open(w, true);
    IndexSearcher s = newSearcher(r);
    
    Query q = new StandardQueryParser(new CannedAnalyzer()).parse("\"a\"", "field");
    assertTrue(q instanceof MultiPhraseQuery);
    assertEquals(1, s.search(q, 10).totalHits);
    s.close();
    r.close();
    w.close();

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