com.jaeksoft.searchlib.spellcheck.SpellCheckCacheItem.java Source code

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Here is the source code for com.jaeksoft.searchlib.spellcheck.SpellCheckCacheItem.java

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/**   
 * License Agreement for OpenSearchServer
 *
 * Copyright (C) 2015 Emmanuel Keller / Jaeksoft
 * 
 * http://www.open-search-server.com
 * 
 * This file is part of OpenSearchServer.
 *
 * OpenSearchServer is free software: you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 * OpenSearchServer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with OpenSearchServer. 
 *  If not, see <http://www.gnu.org/licenses/>.
 **/

package com.jaeksoft.searchlib.spellcheck;

import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.search.spell.LuceneDictionary;
import org.apache.lucene.search.spell.SpellChecker;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.util.Version;

import com.jaeksoft.searchlib.cache.LRUItemAbstract;
import com.jaeksoft.searchlib.index.ReaderLocal;
import com.jaeksoft.searchlib.util.StringUtils;
import com.jaeksoft.searchlib.util.Timer;

public class SpellCheckCacheItem extends LRUItemAbstract<SpellCheckCacheItem> {

    private SpellChecker spellChecker = null;

    private final ReaderLocal reader;
    private final String field;

    public SpellCheckCacheItem(ReaderLocal reader, String field) {
        this.reader = reader;
        this.field = field;
    }

    @Override
    public int compareTo(SpellCheckCacheItem i) {
        return StringUtils.compareNullString(field, i.field);
    }

    @Override
    protected void populate(Timer timer) throws Exception {
        LuceneDictionary dict = reader.getLuceneDirectionary(field);
        spellChecker = new SpellChecker(new RAMDirectory());
        spellChecker.indexDictionary(dict, new IndexWriterConfig(Version.LUCENE_36, null), true);
    }

    public SpellChecker getSpellChecker() {
        return spellChecker;
    }
}