package org.apache.lucene.analysis.snowball;

/**
 * Copyright 2004 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.*;
import org.apache.lucene.analysis.standard.*;

import net.sf.snowball.ext.*;

import java.io.Reader;
import java.util.Hashtable;

/** Filters {@link StandardTokenizer} with {@link StandardFilter}, {@link
 * LowerCaseFilter}, {@link StopFilter} and {@link SnowballFilter}.
 *
 * Available stemmers are listed in {@link net.sf.snowball.ext}.  The name of a
 * stemmer is the part of the class name before "Stemmer", e.g., the stemmer in
 * {@link EnglishStemmer} is named "English".
 */
public class SnowballAnalyzer extends Analyzer {
  private String name;
  private Hashtable stopTable;

  /** Builds the named analyzer with no stop words. */
  public SnowballAnalyzer(String name) {
    this.name = name;
  }

  /** Builds the named analyzer with the given stop words. */
  public SnowballAnalyzer(String name, String[] stopWords) {
    this(name);
    stopTable = StopFilter.makeStopTable(stopWords);
  }

  /** Constructs a {@link StandardTokenizer} filtered by a {@link
      StandardFilter}, a {@link LowerCaseFilter} and a {@link StopFilter}. */
  public TokenStream tokenStream(String fieldName, Reader reader) {
    TokenStream result = new StandardTokenizer(reader);
    result = new StandardFilter(result);
    result = new LowerCaseFilter(result);
    if (stopTable != null)
      result = new StopFilter(result, stopTable);
    result = new SnowballFilter(result, name);
    return result;
  }
}

@@ -810,25 +810,19 @@
 va.util.
-Hashtable
+Set
 ;%0A%0A/** F
@@ -1257,27 +1257,19 @@
 ate 
-Hashtable stopTable
+Set stopSet
 ;%0A%0A 
@@ -1537,21 +1537,19 @@
     stop
-Table
+Set
  = StopF
@@ -1562,21 +1562,19 @@
 makeStop
-Table
+Set
 (stopWor
@@ -1946,21 +1946,19 @@
 if (stop
-Table
+Set
  != null
@@ -2005,13 +2005,11 @@
 stop
-Table
+Set
 );%0A 

convert map to set