FileDataServiceImpl.java

package cn.me.fdfs.service.impl;

import cn.me.fdfs.service.BaseService;
import cn.me.fdfs.service.FileDataService;
import cn.me.fdfs.vo.DownloadFileRecord;
import cn.me.fdfs.vo.Fdfs_file;
import org.hibernate.Query;
import org.hibernate.Session;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

/**
 * Created with IntelliJ IDEA.
 * User: Administrator
 * Date: 12-9-3
 * Time: 下午7:09
 * To change this template use File | Settings | File Templates.
 */
@Service
public class FileDataServiceImpl extends BaseService implements FileDataService {

    @Override
    @Transactional(propagation = Propagation.REQUIRED, readOnly = true)
    public List<Fdfs_file> getFileListByGroupName(String groupName) {
        List<Fdfs_file> files = new ArrayList<Fdfs_file>();
        Session session = getSession();

        StringBuilder queryString = new StringBuilder(
                "from Fdfs_file as f where  f.file_id like '" + groupName + "%'");
        Query query = session.createQuery(queryString.toString());
        files = query.list();

        return files;
    }

    @Override
    @Transactional(propagation = Propagation.REQUIRED, readOnly = true)
    public DownloadFileRecord getDownloadFileRecordByIpAndFileId(String ip, String fileId) {
        DownloadFileRecord downloadFileRecord=new DownloadFileRecord();
        Session session = getSession();
        StringBuilder queryString = new StringBuilder("  from DownloadFileRecord df where df.src_ip='"+ip+"' and df.fileId='"+fileId+"'");
        Query query = session.createQuery(queryString.toString());
          List<DownloadFileRecord> list=query.list();
        if(list.isEmpty()){
            return null;
        }else {
            return list.get(0);
        }

    }

    @Override
    @Transactional(propagation = Propagation.REQUIRED)
    public void saveDF(DownloadFileRecord downloadFileRecord) {
        Session session = getSession();
        session.saveOrUpdate(downloadFileRecord);
    }
}