aos.lucene.tools.CreateSpellCheckerIndex.java Source code

Introduction

Here is the source code for aos.lucene.tools.CreateSpellCheckerIndex.java

Source

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package aos.lucene.tools;

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;

// From chapter 8
public class CreateSpellCheckerIndex {

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

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

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

        LOGGER.info("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 = DirectoryReader.open(dir2); //#B
        try {
            spell.indexDictionary(new LuceneDictionary(r, indexField)); //#C
        } finally {
            r.close();
        }
        dir.close();
        dir2.close();
        long endTime = System.currentTimeMillis();
        LOGGER.info("  took " + (endTime - startTime) + " milliseconds");
    }
}
/*
  #A Create SpellChecker on its directory
  #B Open IndexReader containing words to add to spell dictionary
  #C Add all words from the specified fields into the spell checker index
*/