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Lucene example source code file (GreekAnalyzerTest.java)

This example Lucene source code file (GreekAnalyzerTest.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

analyzer, analyzer, basetokenstreamtestcase, deprecated, exception, exception, greekanalyzer, greekanalyzer, greekanalyzertest, string, string

The Lucene GreekAnalyzerTest.java source code

package org.apache.lucene.analysis.el;

/**
 * Copyright 2005 The Apache Software Foundation
 *
 * 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
 *
 *     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.
 */

import org.apache.lucene.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.util.Version;

/**
 * A unit test class for verifying the correct operation of the GreekAnalyzer.
 *
 */
public class GreekAnalyzerTest extends BaseTokenStreamTestCase {

  /**
   * Test the analysis of various greek strings.
   *
   * @throws Exception in case an error occurs
   */
  public void testAnalyzer() throws Exception {
    Analyzer a = new GreekAnalyzer(TEST_VERSION_CURRENT);
    // Verify the correct analysis of capitals and small accented letters, and
    // stemming
    assertAnalyzesTo(a, "Μία εξαιρετικά καλή και πλούσια σειρά χαρακτήρων της Ελληνικής γλώσσας",
        new String[] { "μια", "εξαιρετ", "καλ", "πλουσ", "σειρ", "χαρακτηρ",
        "ελληνικ", "γλωσσ" });
    // Verify the correct analysis of small letters with diaeresis and the elimination
    // of punctuation marks
    assertAnalyzesTo(a, "Προϊόντα (και)     [πολλαπλές] - ΑΝΑΓΚΕΣ",
        new String[] { "προιοντ", "πολλαπλ", "αναγκ" });
    // Verify the correct analysis of capital accented letters and capital letters with diaeresis,
    // as well as the elimination of stop words
    assertAnalyzesTo(a, "ΠΡΟΫΠΟΘΕΣΕΙΣ  Άψογος, ο μεστός και οι άλλοι",
        new String[] { "προυποθεσ", "αψογ", "μεστ", "αλλ" });
  }
  
	/**
	 * Test the analysis of various greek strings.
	 *
	 * @throws Exception in case an error occurs
	 * @deprecated Remove this test when support for 3.0 is no longer needed
	 */
  @Deprecated
	public void testAnalyzerBWCompat() throws Exception {
		Analyzer a = new GreekAnalyzer(Version.LUCENE_30);
		// Verify the correct analysis of capitals and small accented letters
		assertAnalyzesTo(a, "Μία εξαιρετικά καλή και πλούσια σειρά χαρακτήρων της Ελληνικής γλώσσας",
				new String[] { "μια", "εξαιρετικα", "καλη", "πλουσια", "σειρα", "χαρακτηρων",
				"ελληνικησ", "γλωσσασ" });
		// Verify the correct analysis of small letters with diaeresis and the elimination
		// of punctuation marks
		assertAnalyzesTo(a, "Προϊόντα (και)     [πολλαπλές] - ΑΝΑΓΚΕΣ",
				new String[] { "προιοντα", "πολλαπλεσ", "αναγκεσ" });
		// Verify the correct analysis of capital accented letters and capital letters with diaeresis,
		// as well as the elimination of stop words
		assertAnalyzesTo(a, "ΠΡΟΫΠΟΘΕΣΕΙΣ  Άψογος, ο μεστός και οι άλλοι",
				new String[] { "προυποθεσεισ", "αψογοσ", "μεστοσ", "αλλοι" });
	}
	
  public void testReusableTokenStream() throws Exception {
    Analyzer a = new GreekAnalyzer(TEST_VERSION_CURRENT);
    // Verify the correct analysis of capitals and small accented letters, and
    // stemming
    assertAnalyzesToReuse(a, "Μία εξαιρετικά καλή και πλούσια σειρά χαρακτήρων της Ελληνικής γλώσσας",
        new String[] { "μια", "εξαιρετ", "καλ", "πλουσ", "σειρ", "χαρακτηρ",
        "ελληνικ", "γλωσσ" });
    // Verify the correct analysis of small letters with diaeresis and the elimination
    // of punctuation marks
    assertAnalyzesToReuse(a, "Προϊόντα (και)     [πολλαπλές] - ΑΝΑΓΚΕΣ",
        new String[] { "προιοντ", "πολλαπλ", "αναγκ" });
    // Verify the correct analysis of capital accented letters and capital letters with diaeresis,
    // as well as the elimination of stop words
    assertAnalyzesToReuse(a, "ΠΡΟΫΠΟΘΕΣΕΙΣ  Άψογος, ο μεστός και οι άλλοι",
        new String[] { "προυποθεσ", "αψογ", "μεστ", "αλλ" });
  }
	
	/**
	 * Greek Analyzer didn't call standardFilter, so no normalization of acronyms.
	 * check that this is preserved.
	 * @deprecated remove this test in Lucene 4.0
	 */
	@Deprecated
	public void testAcronymBWCompat() throws Exception {
	  Analyzer a = new GreekAnalyzer(Version.LUCENE_30);
	  assertAnalyzesTo(a, "Α.Π.Τ.", new String[] { "α.π.τ." });
	}
  
  /** blast some random strings through the analyzer */
  public void testRandomStrings() throws Exception {
    checkRandomData(random, new GreekAnalyzer(TEST_VERSION_CURRENT), 10000*RANDOM_MULTIPLIER);
  }
}

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