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 java.sql.ResultSet; import java.util.HashSet; import java.util.Vector; import model.Collabrum; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; /** * This class is used by spring to populate a <code>CollModerator</code> bean. * This class implements CollModeratorsListQuery * @author Smitha Gudur (smitha@redbasin.com) * @version $Revision: 1.1 $ */ class CollModeratorsListQuery extends BasicDirectQuery { protected final Log logger = LogFactory.getLog(getClass()); /** * This method lists all the moderators for a collabrum * @param conn the connection * @param collabrumId the collabrumid * @return HashSet the set that has the list of moderators for these collabrums. * @throws BaseDaoException - when error occurs **/ public HashSet run(Connection conn, String collabrumId) throws BaseDaoException { String sqlQuery = "select distinct CONCAT(hd.fname,' ',hd.lname) AS membername, " + "hd.login, hd.loginid, c1.collabrumid, c2.name from colladmin c1, " + "hdlogin hd, collabrum c2 where c1.loginid=hd.loginid " + "and c1.collabrumid=c2.collabrumid and c1.collabrumid=" + collabrumId + ""; try { PreparedStatement stmt = conn.prepareStatement(sqlQuery); ResultSet rs = stmt.executeQuery(); Vector columnNames = null; Collabrum collabrum = null; HashSet pendingSet = new HashSet(); if (rs != null) { columnNames = dbutils.getColumnNames(rs); } while (rs.next()) { collabrum = (Collabrum) eop.newObject("collabrum"); for (int j = 0; j < columnNames.size(); j++) { collabrum.setValue((String) columnNames.elementAt(j), (String) rs.getString((String) columnNames.elementAt(j))); } pendingSet.add(collabrum); } return pendingSet; } catch (Exception e) { throw new BaseDaoException( "Error occured while executing collabrum moderatorslist run query " + sqlQuery, e); } } }