| package org.apache.lucene.analysis; |
| |
| import org.apache.lucene.analysis.standard.ClassicAnalyzer; |
| |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.document.Field; |
| import org.apache.lucene.index.IndexReader; |
| import org.apache.lucene.index.IndexWriter; |
| import org.apache.lucene.index.IndexWriterConfig; |
| import org.apache.lucene.index.Term; |
| import org.apache.lucene.index.TermPositions; |
| import org.apache.lucene.store.RAMDirectory; |
| import org.apache.lucene.util.Version; |
| |
| import java.io.IOException; |
| import java.util.Arrays; |
| |
| |
| /** |
| * Copyright 2004 The Apache Software Foundation |
| * <p/> |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * <p/> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p/> |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| public class TestClassicAnalyzer extends BaseTokenStreamTestCase { |
| |
| private Analyzer a = new ClassicAnalyzer(TEST_VERSION_CURRENT); |
| |
| public void testMaxTermLength() throws Exception { |
| ClassicAnalyzer sa = new ClassicAnalyzer(TEST_VERSION_CURRENT); |
| sa.setMaxTokenLength(5); |
| assertAnalyzesTo(sa, "ab cd toolong xy z", new String[]{"ab", "cd", "xy", "z"}); |
| } |
| |
| public void testMaxTermLength2() throws Exception { |
| ClassicAnalyzer sa = new ClassicAnalyzer(TEST_VERSION_CURRENT); |
| assertAnalyzesTo(sa, "ab cd toolong xy z", new String[]{"ab", "cd", "toolong", "xy", "z"}); |
| sa.setMaxTokenLength(5); |
| |
| assertAnalyzesTo(sa, "ab cd toolong xy z", new String[]{"ab", "cd", "xy", "z"}, new int[]{1, 1, 2, 1}); |
| } |
| |
| public void testMaxTermLength3() throws Exception { |
| char[] chars = new char[255]; |
| for(int i=0;i<255;i++) |
| chars[i] = 'a'; |
| String longTerm = new String(chars, 0, 255); |
| |
| assertAnalyzesTo(a, "ab cd " + longTerm + " xy z", new String[]{"ab", "cd", longTerm, "xy", "z"}); |
| assertAnalyzesTo(a, "ab cd " + longTerm + "a xy z", new String[]{"ab", "cd", "xy", "z"}); |
| } |
| |
| public void testAlphanumeric() throws Exception { |
| // alphanumeric tokens |
| assertAnalyzesTo(a, "B2B", new String[]{"b2b"}); |
| assertAnalyzesTo(a, "2B", new String[]{"2b"}); |
| } |
| |
| public void testUnderscores() throws Exception { |
| // underscores are delimiters, but not in email addresses (below) |
| assertAnalyzesTo(a, "word_having_underscore", new String[]{"word", "having", "underscore"}); |
| assertAnalyzesTo(a, "word_with_underscore_and_stopwords", new String[]{"word", "underscore", "stopwords"}); |
| } |
| |
| public void testDelimiters() throws Exception { |
| // other delimiters: "-", "/", "," |
| assertAnalyzesTo(a, "some-dashed-phrase", new String[]{"some", "dashed", "phrase"}); |
| assertAnalyzesTo(a, "dogs,chase,cats", new String[]{"dogs", "chase", "cats"}); |
| assertAnalyzesTo(a, "ac/dc", new String[]{"ac", "dc"}); |
| } |
| |
| public void testApostrophes() throws Exception { |
| // internal apostrophes: O'Reilly, you're, O'Reilly's |
| // possessives are actually removed by StardardFilter, not the tokenizer |
| assertAnalyzesTo(a, "O'Reilly", new String[]{"o'reilly"}); |
| assertAnalyzesTo(a, "you're", new String[]{"you're"}); |
| assertAnalyzesTo(a, "she's", new String[]{"she"}); |
| assertAnalyzesTo(a, "Jim's", new String[]{"jim"}); |
| assertAnalyzesTo(a, "don't", new String[]{"don't"}); |
| assertAnalyzesTo(a, "O'Reilly's", new String[]{"o'reilly"}); |
| } |
| |
| public void testTSADash() throws Exception { |
| // t and s had been stopwords in Lucene <= 2.0, which made it impossible |
| // to correctly search for these terms: |
| assertAnalyzesTo(a, "s-class", new String[]{"s", "class"}); |
| assertAnalyzesTo(a, "t-com", new String[]{"t", "com"}); |
| // 'a' is still a stopword: |
| assertAnalyzesTo(a, "a-class", new String[]{"class"}); |
| } |
| |
| public void testCompanyNames() throws Exception { |
| // company names |
| assertAnalyzesTo(a, "AT&T", new String[]{"at&t"}); |
| assertAnalyzesTo(a, "Excite@Home", new String[]{"excite@home"}); |
| } |
| |
| public void testLucene1140() throws Exception { |
| try { |
| ClassicAnalyzer analyzer = new ClassicAnalyzer(TEST_VERSION_CURRENT); |
| assertAnalyzesTo(analyzer, "www.nutch.org.", new String[]{ "www.nutch.org" }, new String[] { "<HOST>" }); |
| } catch (NullPointerException e) { |
| fail("Should not throw an NPE and it did"); |
| } |
| |
| } |
| |
| public void testDomainNames() throws Exception { |
| // Current lucene should not show the bug |
| ClassicAnalyzer a2 = new ClassicAnalyzer(TEST_VERSION_CURRENT); |
| |
| // domain names |
| assertAnalyzesTo(a2, "www.nutch.org", new String[]{"www.nutch.org"}); |
| //Notice the trailing . See https://issues.apache.org/jira/browse/LUCENE-1068. |
| // the following should be recognized as HOST: |
| assertAnalyzesTo(a2, "www.nutch.org.", new String[]{ "www.nutch.org" }, new String[] { "<HOST>" }); |
| |
| // 2.3 should show the bug |
| a2 = new ClassicAnalyzer(org.apache.lucene.util.Version.LUCENE_23); |
| assertAnalyzesTo(a2, "www.nutch.org.", new String[]{ "wwwnutchorg" }, new String[] { "<ACRONYM>" }); |
| |
| // 2.4 should not show the bug |
| a2 = new ClassicAnalyzer(Version.LUCENE_24); |
| assertAnalyzesTo(a2, "www.nutch.org.", new String[]{ "www.nutch.org" }, new String[] { "<HOST>" }); |
| } |
| |
| public void testEMailAddresses() throws Exception { |
| // email addresses, possibly with underscores, periods, etc |
| assertAnalyzesTo(a, "test@example.com", new String[]{"test@example.com"}); |
| assertAnalyzesTo(a, "first.lastname@example.com", new String[]{"first.lastname@example.com"}); |
| assertAnalyzesTo(a, "first_lastname@example.com", new String[]{"first_lastname@example.com"}); |
| } |
| |
| public void testNumeric() throws Exception { |
| // floating point, serial, model numbers, ip addresses, etc. |
| // every other segment must have at least one digit |
| assertAnalyzesTo(a, "21.35", new String[]{"21.35"}); |
| assertAnalyzesTo(a, "R2D2 C3PO", new String[]{"r2d2", "c3po"}); |
| assertAnalyzesTo(a, "216.239.63.104", new String[]{"216.239.63.104"}); |
| assertAnalyzesTo(a, "1-2-3", new String[]{"1-2-3"}); |
| assertAnalyzesTo(a, "a1-b2-c3", new String[]{"a1-b2-c3"}); |
| assertAnalyzesTo(a, "a1-b-c3", new String[]{"a1-b-c3"}); |
| } |
| |
| public void testTextWithNumbers() throws Exception { |
| // numbers |
| assertAnalyzesTo(a, "David has 5000 bones", new String[]{"david", "has", "5000", "bones"}); |
| } |
| |
| public void testVariousText() throws Exception { |
| // various |
| assertAnalyzesTo(a, "C embedded developers wanted", new String[]{"c", "embedded", "developers", "wanted"}); |
| assertAnalyzesTo(a, "foo bar FOO BAR", new String[]{"foo", "bar", "foo", "bar"}); |
| assertAnalyzesTo(a, "foo bar . FOO <> BAR", new String[]{"foo", "bar", "foo", "bar"}); |
| assertAnalyzesTo(a, "\"QUOTED\" word", new String[]{"quoted", "word"}); |
| } |
| |
| public void testAcronyms() throws Exception { |
| // acronyms have their dots stripped |
| assertAnalyzesTo(a, "U.S.A.", new String[]{"usa"}); |
| } |
| |
| public void testCPlusPlusHash() throws Exception { |
| // It would be nice to change the grammar in StandardTokenizer.jj to make "C#" and "C++" end up as tokens. |
| assertAnalyzesTo(a, "C++", new String[]{"c"}); |
| assertAnalyzesTo(a, "C#", new String[]{"c"}); |
| } |
| |
| public void testKorean() throws Exception { |
| // Korean words |
| assertAnalyzesTo(a, "안녕하세요 한글입니다", new String[]{"안녕하세요", "한글입니다"}); |
| } |
| |
| // Compliance with the "old" JavaCC-based analyzer, see: |
| // https://issues.apache.org/jira/browse/LUCENE-966#action_12516752 |
| |
| public void testComplianceFileName() throws Exception { |
| assertAnalyzesTo(a, "2004.jpg", |
| new String[]{"2004.jpg"}, |
| new String[]{"<HOST>"}); |
| } |
| |
| public void testComplianceNumericIncorrect() throws Exception { |
| assertAnalyzesTo(a, "62.46", |
| new String[]{"62.46"}, |
| new String[]{"<HOST>"}); |
| } |
| |
| public void testComplianceNumericLong() throws Exception { |
| assertAnalyzesTo(a, "978-0-94045043-1", |
| new String[]{"978-0-94045043-1"}, |
| new String[]{"<NUM>"}); |
| } |
| |
| public void testComplianceNumericFile() throws Exception { |
| assertAnalyzesTo( |
| a, |
| "78academyawards/rules/rule02.html", |
| new String[]{"78academyawards/rules/rule02.html"}, |
| new String[]{"<NUM>"}); |
| } |
| |
| public void testComplianceNumericWithUnderscores() throws Exception { |
| assertAnalyzesTo( |
| a, |
| "2006-03-11t082958z_01_ban130523_rtridst_0_ozabs", |
| new String[]{"2006-03-11t082958z_01_ban130523_rtridst_0_ozabs"}, |
| new String[]{"<NUM>"}); |
| } |
| |
| public void testComplianceNumericWithDash() throws Exception { |
| assertAnalyzesTo(a, "mid-20th", new String[]{"mid-20th"}, |
| new String[]{"<NUM>"}); |
| } |
| |
| public void testComplianceManyTokens() throws Exception { |
| assertAnalyzesTo( |
| a, |
| "/money.cnn.com/magazines/fortune/fortune_archive/2007/03/19/8402357/index.htm " |
| + "safari-0-sheikh-zayed-grand-mosque.jpg", |
| new String[]{"money.cnn.com", "magazines", "fortune", |
| "fortune", "archive/2007/03/19/8402357", "index.htm", |
| "safari-0-sheikh", "zayed", "grand", "mosque.jpg"}, |
| new String[]{"<HOST>", "<ALPHANUM>", "<ALPHANUM>", |
| "<ALPHANUM>", "<NUM>", "<HOST>", "<NUM>", "<ALPHANUM>", |
| "<ALPHANUM>", "<HOST>"}); |
| } |
| |
| public void testJava14BWCompatibility() throws Exception { |
| ClassicAnalyzer sa = new ClassicAnalyzer(Version.LUCENE_30); |
| assertAnalyzesTo(sa, "test\u02C6test", new String[] { "test", "test" }); |
| } |
| |
| /** |
| * Make sure we skip wicked long terms. |
| */ |
| public void testWickedLongTerm() throws IOException { |
| RAMDirectory dir = new RAMDirectory(); |
| IndexWriter writer = new IndexWriter(dir, new IndexWriterConfig( |
| TEST_VERSION_CURRENT, new ClassicAnalyzer(TEST_VERSION_CURRENT))); |
| |
| char[] chars = new char[IndexWriter.MAX_TERM_LENGTH]; |
| Arrays.fill(chars, 'x'); |
| Document doc = new Document(); |
| final String bigTerm = new String(chars); |
| |
| // This produces a too-long term: |
| String contents = "abc xyz x" + bigTerm + " another term"; |
| doc.add(new Field("content", contents, Field.Store.NO, Field.Index.ANALYZED)); |
| writer.addDocument(doc); |
| |
| // Make sure we can add another normal document |
| doc = new Document(); |
| doc.add(new Field("content", "abc bbb ccc", Field.Store.NO, Field.Index.ANALYZED)); |
| writer.addDocument(doc); |
| writer.close(); |
| |
| IndexReader reader = IndexReader.open(dir, true); |
| |
| // Make sure all terms < max size were indexed |
| assertEquals(2, reader.docFreq(new Term("content", "abc"))); |
| assertEquals(1, reader.docFreq(new Term("content", "bbb"))); |
| assertEquals(1, reader.docFreq(new Term("content", "term"))); |
| assertEquals(1, reader.docFreq(new Term("content", "another"))); |
| |
| // Make sure position is still incremented when |
| // massive term is skipped: |
| TermPositions tps = reader.termPositions(new Term("content", "another")); |
| assertTrue(tps.next()); |
| assertEquals(1, tps.freq()); |
| assertEquals(3, tps.nextPosition()); |
| |
| // Make sure the doc that has the massive term is in |
| // the index: |
| assertEquals("document with wicked long term should is not in the index!", 2, reader.numDocs()); |
| |
| reader.close(); |
| |
| // Make sure we can add a document with exactly the |
| // maximum length term, and search on that term: |
| doc = new Document(); |
| doc.add(new Field("content", bigTerm, Field.Store.NO, Field.Index.ANALYZED)); |
| ClassicAnalyzer sa = new ClassicAnalyzer(TEST_VERSION_CURRENT); |
| sa.setMaxTokenLength(100000); |
| writer = new IndexWriter(dir, new IndexWriterConfig(TEST_VERSION_CURRENT, sa)); |
| writer.addDocument(doc); |
| writer.close(); |
| reader = IndexReader.open(dir, true); |
| assertEquals(1, reader.docFreq(new Term("content", bigTerm))); |
| reader.close(); |
| |
| dir.close(); |
| } |
| |
| /** blast some random strings through the analyzer */ |
| public void testRandomStrings() throws Exception { |
| checkRandomData(random, new ClassicAnalyzer(TEST_VERSION_CURRENT), 10000*RANDOM_MULTIPLIER); |
| } |
| } |