package lia.tools;

/**
 * Copyright Manning Publications Co.
 *
 * 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 lan      
*/

import java.io.IOException;
import java.io.File;
import org.apache.lucene.search.spell.SpellChecker;
import org.apache.lucene.search.spell.LuceneDictionary;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.store.Directory;

//建立拼音檢查庫
// From chapter 8
public class CreateSpellCheckerIndex {

  public static void main(String[] args) throws IOException {

    if (args.length != 3) {
      System.out.println("Usage: java lia.tools.SpellCheckerTest SpellCheckerIndexDir IndexDir IndexField");
      System.exit(1);
    }

    String spellCheckDir = args[0];
    String indexDir = args[1];
    String indexField = args[2];

    System.out.println("Now build SpellChecker index...");
    Directory dir = FSDirectory.open(new File(spellCheckDir));
    SpellChecker spell = new SpellChecker(dir);     //#A
    long startTime = System.currentTimeMillis();
    
    Directory dir2 = FSDirectory.open(new File(indexDir));
    IndexReader r = IndexReader.open(dir2);     //#B
    try {
      spell.indexDictionary(new LuceneDictionary(r, indexField));  //#C
    } finally {
      r.close();
    }
    dir.close();
    dir2.close();
    long endTime = System.currentTimeMillis();
    System.out.println("  took " + (endTime-startTime) + " milliseconds");
  }
}
/*
  #A Create SpellChecker on its directory 建立檢查庫
  #B Open IndexReader containing words to add to spell dictionary 新增到拼音檢查庫
  #C Add all words from the specified fields into the spell checker index 新增索引指定域單詞到拼音檢查庫
*/
 

package lia.tools;

/**
 * Copyright Manning Publications Co.
 *
 * 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 lan      
*/

import java.io.IOException;
import java.io.File;
import org.apache.lucene.search.spell.SpellChecker;
import org.apache.lucene.search.spell.JaroWinklerDistance;
import org.apache.lucene.search.spell.LevensteinDistance;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.store.Directory;
import org.apache.lucene.index.IndexReader;

//搜尋關鍵字拼音智慧提示的實現，通過拼音檢查庫
// From chapter 8
public class SpellCheckerExample {

  public static void main(String[] args) throws IOException {

    if (args.length != 2) {
      System.out.println("Usage: java lia.tools.SpellCheckerTest SpellCheckerIndexDir wordToRespell");
      System.exit(1);
    }

    String spellCheckDir = args[0];
    String wordToRespell = args[1];

    Directory dir = FSDirectory.open(new File(spellCheckDir));
    if (!IndexReader.indexExists(dir)) {
      System.out.println("\nERROR: No spellchecker index at path \"" +
                         spellCheckDir +
                         "\"; please run CreateSpellCheckerIndex first\n");
      System.exit(1);
    }
    SpellChecker spell = new SpellChecker(dir);  //#A

    spell.setStringDistance(new LevensteinDistance());  //#B
    //spell.setStringDistance(new JaroWinklerDistance());

    String[] suggestions = spell.suggestSimilar(wordToRespell, 5); //#C
    System.out.println(suggestions.length + " suggestions for '" + wordToRespell + "':");
    for (String suggestion : suggestions)
      System.out.println("  " + suggestion);
  }
}
/*
  #A Create SpellCheck from existing spell check index
  #B Sets the string distance metric used to rank the suggestions
  #C Generate respelled candidates
*/