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Lucene example source code file (TestMockAnalyzer.java)

This example Lucene source code file (TestMockAnalyzer.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Lucene tags/keywords

a, analyzer, analyzer, basetokenstreamtestcase, chararrayset, exception, exception, io, mockanalyzer, mockanalyzer, string, string, stringreader, testmockanalyzer, tokenstream

The Lucene TestMockAnalyzer.java source code

package org.apache.lucene.analysis;

import java.io.StringReader;

/**
 * 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.
 */

public class TestMockAnalyzer extends BaseTokenStreamTestCase {

  /** Test a configuration that behaves a lot like WhitespaceAnalyzer */
  public void testWhitespace() throws Exception {
    Analyzer a = new MockAnalyzer(random);
    assertAnalyzesTo(a, "A bc defg hiJklmn opqrstuv wxy z ",
        new String[] { "a", "bc", "defg", "hijklmn", "opqrstuv", "wxy", "z" });
    assertAnalyzesToReuse(a, "aba cadaba shazam",
        new String[] { "aba", "cadaba", "shazam" });
    assertAnalyzesToReuse(a, "break on whitespace",
        new String[] { "break", "on", "whitespace" });
  }
  
  /** Test a configuration that behaves a lot like SimpleAnalyzer */
  public void testSimple() throws Exception {
    Analyzer a = new MockAnalyzer(random, MockTokenizer.SIMPLE, true);
    assertAnalyzesTo(a, "a-bc123 defg+hijklmn567opqrstuv78wxy_z ",
        new String[] { "a", "bc", "defg", "hijklmn", "opqrstuv", "wxy", "z" });
    assertAnalyzesToReuse(a, "aba4cadaba-Shazam",
        new String[] { "aba", "cadaba", "shazam" });
    assertAnalyzesToReuse(a, "break+on/Letters",
        new String[] { "break", "on", "letters" });
  }
  
  /** Test a configuration that behaves a lot like KeywordAnalyzer */
  public void testKeyword() throws Exception {
    Analyzer a = new MockAnalyzer(random, MockTokenizer.KEYWORD, false);
    assertAnalyzesTo(a, "a-bc123 defg+hijklmn567opqrstuv78wxy_z ",
        new String[] { "a-bc123 defg+hijklmn567opqrstuv78wxy_z " });
    assertAnalyzesToReuse(a, "aba4cadaba-Shazam",
        new String[] { "aba4cadaba-Shazam" });
    assertAnalyzesToReuse(a, "break+on/Nothing",
        new String[] { "break+on/Nothing" });
  }
  
  /** Test a configuration that behaves a lot like StopAnalyzer */
  public void testStop() throws Exception {
    Analyzer a = new MockAnalyzer(random, MockTokenizer.SIMPLE, true, (CharArraySet) StopAnalyzer.ENGLISH_STOP_WORDS_SET, true);
    assertAnalyzesTo(a, "the quick brown a fox",
        new String[] { "quick", "brown", "fox" },
        new int[] { 2, 1, 2 });
    
    // disable positions
    a = new MockAnalyzer(random, MockTokenizer.SIMPLE, true, (CharArraySet) StopAnalyzer.ENGLISH_STOP_WORDS_SET, false);
    assertAnalyzesTo(a, "the quick brown a fox",
        new String[] { "quick", "brown", "fox" },
        new int[] { 1, 1, 1 });
  }
  
  public void testLUCENE_3042() throws Exception {
    String testString = "t";
    
    Analyzer analyzer = new MockAnalyzer(random);
    TokenStream stream = analyzer.reusableTokenStream("dummy", new StringReader(testString));
    stream.reset();
    while (stream.incrementToken()) {
      // consume
    }
    stream.end();
    stream.close();
    
    assertAnalyzesToReuse(analyzer, testString, new String[] { "t" });
  }

  /** blast some random strings through the analyzer */
  public void testRandomStrings() throws Exception {
    checkRandomData(random, new MockAnalyzer(random), 10000*RANDOM_MULTIPLIER);
  }
}

Other Lucene examples (source code examples)

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