Lucene example source code file (VocabularyAssert.java)

This example Lucene source code file (VocabularyAssert.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

bufferedreader, bufferedreader, file, inputstream, inputstream, inputstreamreader, io, ioexception, ioexception, string, string, utf-8, vocabularyassert, zip, zipfile

The Lucene VocabularyAssert.java source code

package org.apache.lucene.analysis;

/**
 * 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.
 */

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.zip.ZipFile;

import org.apache.lucene.analysis.Analyzer;
import org.junit.Assert;

/** Utility class for doing vocabulary-based stemming tests */
public class VocabularyAssert {
  /** Run a vocabulary test against two data files. */
  public static void assertVocabulary(Analyzer a, InputStream voc, InputStream out)
  throws IOException {
    BufferedReader vocReader = new BufferedReader(
        new InputStreamReader(voc, "UTF-8"));
    BufferedReader outputReader = new BufferedReader(
        new InputStreamReader(out, "UTF-8"));
    String inputWord = null;
    while ((inputWord = vocReader.readLine()) != null) {
      String expectedWord = outputReader.readLine();
      Assert.assertNotNull(expectedWord);
      BaseTokenStreamTestCase.checkOneTermReuse(a, inputWord, expectedWord);
    }
  }
  
  /** Run a vocabulary test against one file: tab separated. */
  public static void assertVocabulary(Analyzer a, InputStream vocOut)
  throws IOException {
    BufferedReader vocReader = new BufferedReader(
        new InputStreamReader(vocOut, "UTF-8"));
    String inputLine = null;
    while ((inputLine = vocReader.readLine()) != null) {
      if (inputLine.startsWith("#") || inputLine.trim().length() == 0)
        continue; /* comment */
      String words[] = inputLine.split("\t");
      BaseTokenStreamTestCase.checkOneTermReuse(a, words[0], words[1]);
    }
  }
  
  /** Run a vocabulary test against two data files inside a zip file */
  public static void assertVocabulary(Analyzer a, File zipFile, String voc, String out)
  throws IOException {
    ZipFile zip = new ZipFile(zipFile);
    InputStream v = zip.getInputStream(zip.getEntry(voc));
    InputStream o = zip.getInputStream(zip.getEntry(out));
    assertVocabulary(a, v, o);
    v.close();
    o.close();
    zip.close();
  }
  
  /** Run a vocabulary test against a tab-separated data file inside a zip file */
  public static void assertVocabulary(Analyzer a, File zipFile, String vocOut)
  throws IOException {
    ZipFile zip = new ZipFile(zipFile);
    InputStream vo = zip.getInputStream(zip.getEntry(vocOut));
    assertVocabulary(a, vo);
    vo.close();
    zip.close();
  }
}