Java tutorial
/** * Copyright (c) 2001-2012 "Redbasin Networks, INC," [http://redbasin.org] * * This file is part of Redbasin OpenDocShare community project. * * Redbasin OpenDocShare 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. * * 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, see <http://www.gnu.org/licenses/>. */ package dao; import java.sql.Connection; import java.sql.PreparedStatement; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import util.RegexStrUtil; /** * * @author Smitha Gudur (smitha@redbasin.com) * @version $Revision: 1.1 $ */ class CarryonUpdateQuery { protected final Log logger = LogFactory.getLog(getClass()); /** * This method is not called by spring. * * @param conn the connection is passed to this method * @param btitle the title of the blob * @param zoom the zoom for the images * @param entryid */ public void run(Connection conn, String btitle, String zoom, String entryid, String loginid, boolean isFile, String caption) throws BaseDaoException { byte[] capBytes = { ' ' }; if (!RegexStrUtil.isNull(caption)) { capBytes = caption.getBytes(); } /** * Zoom is not applicable to files. Don't update zoom for file blobs */ StringBuffer query = new StringBuffer(); try { if (isFile) { query.append("update carryon set btitle='" + btitle + "', caption='" + caption + "', zoom=" + zoom + " where entryid=" + entryid + " and loginid=" + loginid + ""); PreparedStatement stmt = conn.prepareStatement("update carryon set btitle='" + btitle + "', caption=? where entryid=" + entryid + " and loginid=" + loginid + ""); stmt.setBytes(1, capBytes); stmt.executeUpdate(); } else { query.append("update carryon set btitle='" + btitle + "', caption='" + caption + "', zoom=" + zoom + " where entryid=" + entryid + " and loginid=" + loginid + ""); PreparedStatement stmt = conn .prepareStatement("update carryon set btitle='" + btitle + "', caption=?, zoom=" + zoom + " where entryid=" + entryid + " and loginid=" + loginid + ""); stmt.setBytes(1, capBytes); stmt.executeUpdate(); } } catch (Exception e) { logger.warn("Error occured while executing CarryonUpdateQuery, query=" + query.toString(), e); throw new BaseDaoException("Error occured while executing update carryon ", e); } } }