com.edgenius.wiki.search.lucene.IndexWriterTemplate.java Source code

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Here is the source code for com.edgenius.wiki.search.lucene.IndexWriterTemplate.java

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/* 
 * =============================================================
 * Copyright (C) 2007-2011 Edgenius (http://www.edgenius.com)
 * =============================================================
 * License Information: http://www.edgenius.com/licensing/edgenius/2.0/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2.0
 * as published by the Free Software Foundation.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * http://www.gnu.org/licenses/gpl.txt
 *  
 * ****************************************************************
 */
package com.edgenius.wiki.search.lucene;

import java.io.IOException;

import org.apache.lucene.document.Document;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.Term;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author Dapeng.Ni
 */
public class IndexWriterTemplate {
    private static final Logger log = LoggerFactory.getLogger(IndexWriterTemplate.class);

    private IndexFactory indexFactory;

    public IndexWriterTemplate(IndexFactory indexFactory) {
        this.indexFactory = indexFactory;

    }

    public void deleteDocuments(Term term) {
        IndexWriter writer = indexFactory.getIndexWriter();
        try {
            writer.deleteDocuments(term);
            writer.commit();
        } catch (IOException ex) {
            log.error("Error during deleting a document", ex);
            throw new IndexAccessException("Error during deleting a document.", ex);
        }
    }

    public void addDocument(IndexCallback callback) {

        IndexWriter writer = indexFactory.getIndexWriter();
        try {
            callback.addDocument(writer);
            writer.commit();
        } catch (IOException ex) {
            log.error("Error during deleting a document", ex);
            throw new IndexAccessException("Error during deleting a document.", ex);
        }

    }

    /**
     * @param documentCreator
     */
    public void addDocument(Document document) {
        IndexWriter writer = indexFactory.getIndexWriter();
        try {
            writer.addDocument(document);
            writer.commit();
        } catch (IOException ex) {
            log.error("Error during add a document", ex);
            throw new IndexAccessException("Error during add a document.", ex);
        }
    }

    /**
     * 
     */
    public void optimize() {
        IndexWriter writer = indexFactory.getIndexWriter();
        try {
            writer.optimize();
            writer.commit();
        } catch (IOException ex) {
            log.error("Error during optimize documents", ex);
            throw new IndexAccessException("Error optimize documents.", ex);
        }
    }

    /**
     * This method will close IndexWriter. 
     * This method can be used to create an empty index.
     */
    public void closeIndex() {

        indexFactory.closeIndex();

    }

    public void createEmptyIndex() {
        indexFactory.createEmptyIndex();
    }

}