1 package org.apache.lucene.search;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
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7 * The ASF licenses this file to You under the Apache License, Version 2.0
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20 import java.text.DecimalFormat;
21 import java.text.DecimalFormatSymbols;
22 import java.text.NumberFormat;
23 import java.util.Locale;
25 import org.apache.lucene.analysis.MockAnalyzer;
26 import org.apache.lucene.document.Document;
27 import org.apache.lucene.document.Field;
28 import org.apache.lucene.index.IndexReader;
29 import org.apache.lucene.index.RandomIndexWriter;
30 import org.apache.lucene.index.Term;
31 import org.apache.lucene.store.Directory;
32 import org.apache.lucene.util.LuceneTestCase;
33 import org.apache.lucene.util._TestUtil;
36 * Create an index with terms from 000-999.
37 * Generates random wildcards according to patterns,
38 * and validates the correct number of hits are returned.
40 public class TestWildcardRandom extends LuceneTestCase {
41 private IndexSearcher searcher;
42 private IndexReader reader;
43 private Directory dir;
46 public void setUp() throws Exception {
49 RandomIndexWriter writer = new RandomIndexWriter(random, dir,
50 newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random))
51 .setMaxBufferedDocs(_TestUtil.nextInt(random, 50, 1000)));
53 Document doc = new Document();
54 Field bogus1 = newField("bogus1", "", Field.Store.NO, Field.Index.NOT_ANALYZED_NO_NORMS);
55 Field field = newField("field", "", Field.Store.NO, Field.Index.ANALYZED_NO_NORMS);
56 Field bogus2 = newField("zbogus2", "", Field.Store.NO, Field.Index.NOT_ANALYZED_NO_NORMS);
61 NumberFormat df = new DecimalFormat("000", new DecimalFormatSymbols(Locale.ENGLISH));
62 for (int i = 0; i < 1000; i++) {
63 field.setValue(df.format(i));
64 bogus1.setValue(_TestUtil.randomUnicodeString(random, 10));
65 bogus2.setValue(_TestUtil.randomUnicodeString(random, 10));
66 writer.addDocument(doc);
69 reader = writer.getReader();
70 searcher = newSearcher(reader);
75 return (char) (0x30 + random.nextInt(10));
78 private String fillPattern(String wildcardPattern) {
79 StringBuilder sb = new StringBuilder();
80 for (int i = 0; i < wildcardPattern.length(); i++) {
81 switch(wildcardPattern.charAt(i)) {
86 sb.append(wildcardPattern.charAt(i));
92 private void assertPatternHits(String pattern, int numHits) throws Exception {
93 // TODO: run with different rewrites
94 Query wq = new WildcardQuery(new Term("field", fillPattern(pattern)));
95 TopDocs docs = searcher.search(wq, 25);
96 assertEquals("Incorrect hits for pattern: " + pattern, numHits, docs.totalHits);
100 public void tearDown() throws Exception {
107 public void testWildcards() throws Exception {;
108 int num = atLeast(1);
109 for (int i = 0; i < num; i++) {
110 assertPatternHits("NNN", 1);
111 assertPatternHits("?NN", 10);
112 assertPatternHits("N?N", 10);
113 assertPatternHits("NN?", 10);
116 for (int i = 0; i < num; i++) {
117 assertPatternHits("??N", 100);
118 assertPatternHits("N??", 100);
119 assertPatternHits("???", 1000);
121 assertPatternHits("NN*", 10);
122 assertPatternHits("N*", 100);
123 assertPatternHits("*", 1000);
125 assertPatternHits("*NN", 10);
126 assertPatternHits("*N", 100);
128 assertPatternHits("N*N", 10);
130 // combo of ? and * operators
131 assertPatternHits("?N*", 100);
132 assertPatternHits("N?*", 100);
134 assertPatternHits("*N?", 100);
135 assertPatternHits("*??", 1000);
136 assertPatternHits("*?N", 100);