TestWildcardpublic class TestWildcard extends TestCase | TestWildcard tests the '*' and '?' wildard characters. |
| Constructors Summary |
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public TestWildcard(String name)Creates a new TestWildcard instance.
super(name);
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| Methods Summary |
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| private void | assertMatches(org.apache.lucene.search.IndexSearcher searcher, org.apache.lucene.search.Query q, int expectedMatches)
Hits result = searcher.search(q);
assertEquals(expectedMatches, result.length());
| | private org.apache.lucene.store.RAMDirectory | getIndexStore(java.lang.String field, java.lang.String[] contents)
RAMDirectory indexStore = new RAMDirectory();
IndexWriter writer = new IndexWriter(indexStore, new SimpleAnalyzer(), true);
for (int i = 0; i < contents.length; ++i) {
Document doc = new Document();
doc.add(Field.Text(field, contents[i]));
writer.addDocument(doc);
}
writer.optimize();
writer.close();
return indexStore;
| | public void | testAsterisk()Tests Wildcard queries with an asterisk.
RAMDirectory indexStore = getIndexStore("body", new String[]
{ "metal", "metals" }
);
IndexSearcher searcher = new IndexSearcher(indexStore);
Query query1 = new TermQuery(new Term("body", "metal"));
Query query2 = new WildcardQuery(new Term("body", "metal*"));
Query query3 = new WildcardQuery(new Term("body", "m*tal"));
Query query4 = new WildcardQuery(new Term("body", "m*tal*"));
Query query5 = new WildcardQuery(new Term("body", "m*tals"));
BooleanQuery query6 = new BooleanQuery();
query6.add(query5, false, false);
BooleanQuery query7 = new BooleanQuery();
query7.add(query3, false, false);
query7.add(query5, false, false);
// Queries do not automatically lower-case search terms:
Query query8 = new WildcardQuery(new Term("body", "M*tal*"));
assertMatches(searcher, query1, 1);
assertMatches(searcher, query2, 2);
assertMatches(searcher, query3, 1);
assertMatches(searcher, query4, 2);
assertMatches(searcher, query5, 1);
assertMatches(searcher, query6, 1);
assertMatches(searcher, query7, 2);
assertMatches(searcher, query8, 0);
| | public void | testQuestionmark()Tests Wildcard queries with a question mark.
RAMDirectory indexStore = getIndexStore("body", new String[]
{ "metal", "metals", "mXtals", "mXtXls" }
);
IndexSearcher searcher = new IndexSearcher(indexStore);
Query query1 = new WildcardQuery(new Term("body", "m?tal"));
Query query2 = new WildcardQuery(new Term("body", "metal?"));
Query query3 = new WildcardQuery(new Term("body", "metals?"));
Query query4 = new WildcardQuery(new Term("body", "m?t?ls"));
Query query5 = new WildcardQuery(new Term("body", "M?t?ls"));
assertMatches(searcher, query1, 1);
assertMatches(searcher, query2, 2);
assertMatches(searcher, query3, 1);
assertMatches(searcher, query4, 3);
assertMatches(searcher, query5, 0);
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