| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * 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. |
| */ |
| package org.apache.lucene.analysis.pattern; |
| |
| import org.apache.lucene.analysis.Analyzer; |
| import org.apache.lucene.analysis.BaseTokenStreamTestCase; |
| import org.apache.lucene.analysis.MockTokenizer; |
| import org.apache.lucene.analysis.TokenStream; |
| import org.apache.lucene.analysis.Tokenizer; |
| import org.apache.lucene.analysis.core.KeywordTokenizer; |
| |
| import java.io.IOException; |
| import java.util.regex.Pattern; |
| |
| public class TestPatternReplaceFilter extends BaseTokenStreamTestCase { |
| |
| public void testReplaceAll() throws Exception { |
| String input = "aabfooaabfooabfoob ab caaaaaaaaab"; |
| TokenStream ts = new PatternReplaceFilter |
| (whitespaceMockTokenizer(input), |
| Pattern.compile("a*b"), |
| "-", true); |
| assertTokenStreamContents(ts, |
| new String[] { "-foo-foo-foo-", "-", "c-" }); |
| } |
| |
| public void testReplaceFirst() throws Exception { |
| String input = "aabfooaabfooabfoob ab caaaaaaaaab"; |
| TokenStream ts = new PatternReplaceFilter |
| (whitespaceMockTokenizer(input), |
| Pattern.compile("a*b"), |
| "-", false); |
| assertTokenStreamContents(ts, |
| new String[] { "-fooaabfooabfoob", "-", "c-" }); |
| } |
| |
| public void testStripFirst() throws Exception { |
| String input = "aabfooaabfooabfoob ab caaaaaaaaab"; |
| TokenStream ts = new PatternReplaceFilter |
| (whitespaceMockTokenizer(input), |
| Pattern.compile("a*b"), |
| null, false); |
| assertTokenStreamContents(ts, |
| new String[] { "fooaabfooabfoob", "", "c" }); |
| } |
| |
| public void testStripAll() throws Exception { |
| String input = "aabfooaabfooabfoob ab caaaaaaaaab"; |
| TokenStream ts = new PatternReplaceFilter |
| (whitespaceMockTokenizer(input), |
| Pattern.compile("a*b"), |
| null, true); |
| assertTokenStreamContents(ts, |
| new String[] { "foofoofoo", "", "c" }); |
| } |
| |
| public void testReplaceAllWithBackRef() throws Exception { |
| String input = "aabfooaabfooabfoob ab caaaaaaaaab"; |
| TokenStream ts = new PatternReplaceFilter |
| (whitespaceMockTokenizer(input), |
| Pattern.compile("(a*)b"), |
| "$1\\$", true); |
| assertTokenStreamContents(ts, |
| new String[] { "aa$fooaa$fooa$foo$", "a$", "caaaaaaaaa$" }); |
| } |
| |
| /** blast some random strings through the analyzer */ |
| public void testRandomStrings() throws Exception { |
| Analyzer a = new Analyzer() { |
| @Override |
| protected TokenStreamComponents createComponents(String fieldName) { |
| Tokenizer tokenizer = new MockTokenizer(MockTokenizer.WHITESPACE, false); |
| TokenStream filter = new PatternReplaceFilter(tokenizer, Pattern.compile("a"), "b", false); |
| return new TokenStreamComponents(tokenizer, filter); |
| } |
| }; |
| checkRandomData(random(), a, 200 * RANDOM_MULTIPLIER); |
| a.close(); |
| |
| Analyzer b = new Analyzer() { |
| @Override |
| protected TokenStreamComponents createComponents(String fieldName) { |
| Tokenizer tokenizer = new MockTokenizer(MockTokenizer.WHITESPACE, false); |
| TokenStream filter = new PatternReplaceFilter(tokenizer, Pattern.compile("a"), "b", true); |
| return new TokenStreamComponents(tokenizer, filter); |
| } |
| }; |
| checkRandomData(random(), b, 200 * RANDOM_MULTIPLIER); |
| b.close(); |
| } |
| |
| public void testEmptyTerm() throws IOException { |
| Analyzer a = new Analyzer() { |
| @Override |
| protected TokenStreamComponents createComponents(String fieldName) { |
| Tokenizer tokenizer = new KeywordTokenizer(); |
| return new TokenStreamComponents(tokenizer, new PatternReplaceFilter(tokenizer, Pattern.compile("a"), "b", true)); |
| } |
| }; |
| checkOneTerm(a, "", ""); |
| a.close(); |
| } |
| |
| } |