content: package org.apache.lucene.analysis.ar;
  /**
   * 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.Reader;
  
  import org.apache.lucene.analysis.CharTokenizer;
  import org.apache.lucene.analysis.LetterTokenizer;
  import org.apache.lucene.analysis.standard.StandardTokenizer; // javadoc @link
  import org.apache.lucene.util.AttributeSource;
  import org.apache.lucene.util.Version;
  
  /**
   * Tokenizer that breaks text into runs of letters and diacritics.
   * <p>
   * The problem with the standard Letter tokenizer is that it fails on diacritics.
   * Handling similar to this is necessary for Indic Scripts, Hebrew, Thaana, etc.
   * </p>
   * <p>
   * <a name="version"/>
   * You must specify the required {@link Version} compatibility when creating
   * {@link ArabicLetterTokenizer}:
   * <ul>
   * <li>As of 3.1, {@link CharTokenizer} uses an int based API to normalize and
   * detect token characters. See {@link #isTokenChar(int)} and
   * {@link #normalize(int)} for details.</li>
   * </ul>
   * @deprecated (3.1) Use {@link StandardTokenizer} instead.
   */
  @Deprecated
  public class ArabicLetterTokenizer extends LetterTokenizer {
  
    
    /**
     * Construct a new ArabicLetterTokenizer.
     * @param matchVersion Lucene version
     * to match See {@link <a href="#version">above</a>}
     * 
     * @param in
     *          the input to split up into tokens
     */
    public ArabicLetterTokenizer(Version matchVersion, Reader in) {
      super(matchVersion, in);
    }
  
    /**
     * Construct a new ArabicLetterTokenizer using a given {@link AttributeSource}.
     * 
     * @param matchVersion
     *          Lucene version to match See {@link <a href="#version">above</a>}
     * @param source
     *          the attribute source to use for this Tokenizer
     * @param in
     *          the input to split up into tokens
     */
    public ArabicLetterTokenizer(Version matchVersion, AttributeSource source, Reader in) {
      super(matchVersion, source, in);
    }
  
    /**
     * Construct a new ArabicLetterTokenizer using a given
     * {@link org.apache.lucene.util.AttributeSource.AttributeFactory}. * @param
     * matchVersion Lucene version to match See
     * {@link <a href="#version">above</a>}
     * 
     * @param factory
     *          the attribute factory to use for this Tokenizer
     * @param in
     *          the input to split up into tokens
     */
    public ArabicLetterTokenizer(Version matchVersion, AttributeFactory factory, Reader in) {
      super(matchVersion, factory, in);
    }
    
    /**
     * Construct a new ArabicLetterTokenizer.
     * 
     * @deprecated use {@link #ArabicLetterTokenizer(Version, Reader)} instead. This will
     *             be removed in Lucene 4.0.
     */
    @Deprecated
    public ArabicLetterTokenizer(Reader in) {
      super(in);
    }
  
    /**
     * Construct a new ArabicLetterTokenizer using a given {@link AttributeSource}.
     * 
     * @deprecated use {@link #ArabicLetterTokenizer(Version, AttributeSource, Reader)}
     *             instead. This will be removed in Lucene 4.0.
     */
    @Deprecated
    public ArabicLetterTokenizer(AttributeSource source, Reader in) {
      super(source, in);
    }
  
    /**
     * Construct a new ArabicLetterTokenizer using a given
     * {@link org.apache.lucene.util.AttributeSource.AttributeFactory}.
     * 
     * @deprecated use {@link #ArabicLetterTokenizer(Version, AttributeSource.AttributeFactory, Reader)}
     *             instead. This will be removed in Lucene 4.0.
     */
    @Deprecated
    public ArabicLetterTokenizer(AttributeFactory factory, Reader in) {
      super(factory, in);
    }
    
    
    /** 
     * Allows for Letter category or NonspacingMark category
     * @see org.apache.lucene.analysis.LetterTokenizer#isTokenChar(int)
     */
    @Override
    protected boolean isTokenChar(int c) {
      return super.isTokenChar(c) || Character.getType(c) == Character.NON_SPACING_MARK;
    }
  
  }
  