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TestBooleanPrefixQuery.javaAPI DocApache Lucene 2.1.03335Wed Feb 14 10:46:36 GMT 2007org.apache.lucene.search

TestBooleanPrefixQuery

public class TestBooleanPrefixQuery extends TestCase
author
schnee
version
$Id: TestBooleanPrefixQuery.java 472959 2006-11-09 16:21:50Z yonik $

Fields Summary
Constructors Summary
public TestBooleanPrefixQuery(String name)

    super(name);
  
Methods Summary
public static voidmain(java.lang.String[] args)

    TestRunner.run(suite());
  
public static junit.framework.Testsuite()

    return new TestSuite(TestBooleanPrefixQuery.class);
  
public voidtestMethod()

    RAMDirectory directory = new RAMDirectory();

    String[] categories = new String[]{"food",
                                       "foodanddrink",
                                       "foodanddrinkandgoodtimes",
                                       "food and drink"};

    Query rw1 = null;
    Query rw2 = null;
    try {
      IndexWriter writer = new IndexWriter(directory, new
                                           WhitespaceAnalyzer(), true);
      for (int i = 0; i < categories.length; i++) {
        Document doc = new Document();
        doc.add(new Field("category", categories[i], Field.Store.YES, Field.Index.UN_TOKENIZED));
        writer.addDocument(doc);
      }
      writer.close();
      
      IndexReader reader = IndexReader.open(directory);
      PrefixQuery query = new PrefixQuery(new Term("category", "foo"));
      
      rw1 = query.rewrite(reader);
      
      BooleanQuery bq = new BooleanQuery();
      bq.add(query, BooleanClause.Occur.MUST);
      
      rw2 = bq.rewrite(reader);
    } catch (IOException e) {
      fail(e.getMessage());
    }

    BooleanQuery bq1 = null;
    if (rw1 instanceof BooleanQuery) {
      bq1 = (BooleanQuery) rw1;
    }

    BooleanQuery bq2 = null;
    if (rw2 instanceof BooleanQuery) {
        bq2 = (BooleanQuery) rw2;
    } else {
      fail("Rewrite");
    }

    assertEquals("Number of Clauses Mismatch", bq1.getClauses().length,
                 bq2.getClauses().length);