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Lucene example source code file (TestCharFilter.java)

This example Lucene source code file (TestCharFilter.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

charfilter, charfilter1, charfilter1, charfilter2, charstream, charstream, exception, exception, io, lucenetestcase, override, stringreader, stringreader, testcharfilter

The Lucene TestCharFilter.java source code

/**
 * 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;

import java.io.StringReader;

import org.apache.lucene.util.LuceneTestCase;

public class TestCharFilter extends LuceneTestCase {

  public void testCharFilter1() throws Exception {
    CharStream cs = new CharFilter1( CharReader.get( new StringReader("") ) );
    assertEquals( "corrected offset is invalid", 1, cs.correctOffset( 0 ) );
  }

  public void testCharFilter2() throws Exception {
    CharStream cs = new CharFilter2( CharReader.get( new StringReader("") ) );
    assertEquals( "corrected offset is invalid", 2, cs.correctOffset( 0 ) );
  }

  public void testCharFilter12() throws Exception {
    CharStream cs = new CharFilter2( new CharFilter1( CharReader.get( new StringReader("") ) ) );
    assertEquals( "corrected offset is invalid", 3, cs.correctOffset( 0 ) );
  }

  public void testCharFilter11() throws Exception {
    CharStream cs = new CharFilter1( new CharFilter1( CharReader.get( new StringReader("") ) ) );
    assertEquals( "corrected offset is invalid", 2, cs.correctOffset( 0 ) );
  }

  static class CharFilter1 extends CharFilter {

    protected CharFilter1(CharStream in) {
      super(in);
    }

    @Override
    protected int correct(int currentOff) {
      return currentOff + 1;
    }
  }

  static class CharFilter2 extends CharFilter {

    protected CharFilter2(CharStream in) {
      super(in);
    }

    @Override
    protected int correct(int currentOff) {
      return currentOff + 2;
    }
  }
}

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