com.leixl.easyframework.lucene.impl.LuceneEMovieDaoImpl.java Source code

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Here is the source code for com.leixl.easyframework.lucene.impl.LuceneEMovieDaoImpl.java

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/**
 * Project: easyframework-dao
 * 
 * File Created at 2014122
 * $Id$
 * 
 * Copyright 2013 leixl.com Croporation Limited.
 * All rights reserved.
 *
 * This software is the confidential and proprietary information of
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into
 */
package com.leixl.easyframework.lucene.impl;

import java.io.IOException;
import java.util.Date;

import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.index.IndexWriter;
import org.easyframework.core.hibernate3.Finder;
import org.easyframework.core.hibernate3.HibernateBaseDao;
import org.hibernate.CacheMode;
import org.hibernate.ScrollMode;
import org.hibernate.ScrollableResults;
import org.hibernate.Session;
import org.springframework.stereotype.Repository;

import com.leixl.easyframework.doc.entity.EMovie;
import com.leixl.easyframework.lucene.LuceneContent;
import com.leixl.easyframework.lucene.LuceneEMovieDao;

/**
 *  
 * @author leixl
 * @date   2014122 ?2:33:06
 * @version v1.0
 */
@Repository
public class LuceneEMovieDaoImpl extends HibernateBaseDao<EMovie, Integer> implements LuceneEMovieDao {

    public Integer index(IndexWriter writer, Date startDate, Date endDate, Integer startId, Integer max)
            throws CorruptIndexException, IOException {
        Finder f = Finder.create("select bean from EMovie bean");

        f.append(" where 1=1");
        if (startId != null) {
            f.append(" and bean.id > :startId");
            f.setParam("startId", startId);
        }
        if (startDate != null) {
            f.append(" and bean.createDate >= :startDate");
            f.setParam("startDate", startDate);
        }
        if (endDate != null) {
            f.append(" and bean.createDate <= :endDate");
            f.setParam("endDate", endDate);
        }
        f.append(" order by bean.id asc");
        if (max != null) {
            f.setMaxResults(max);
        }
        Session session = getSession();
        ScrollableResults movies = f.createQuery(getSession()).setCacheMode(CacheMode.IGNORE)
                .scroll(ScrollMode.FORWARD_ONLY);
        int count = 0;
        EMovie movie = null;
        while (movies.next()) {
            movie = (EMovie) movies.get(0);
            writer.addDocument(LuceneContent.createDocument(movie));
            if (++count % 20 == 0) {
                session.clear();
            }
        }
        if (count < max || movie == null) {
            // ????????
            return null;
        } else {
            // ?ID
            return movie.getId();
        }

    }

}