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The source code/* * $Header: /cvsroot/mvnforum/mvnforum/src/com/mvnforum/db/jdbc/MemberForumDAOImplJDBC.java,v 1.5 2005/01/18 11:52:20 minhnn Exp $ * $Author: minhnn $ * $Revision: 1.5 $ * $Date: 2005/01/18 11:52:20 $ * * ==================================================================== * * Copyright (C) 2002-2005 by MyVietnam.net * * This program 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 2 * of the License, or any later version. * * All copyright notices regarding mvnForum MUST remain intact * in the scripts and in the outputted HTML. * The "powered by" text/logo with a link back to * http://www.mvnForum.com and http://www.MyVietnam.net in the * footer of the pages MUST remain visible when the pages * are viewed on the internet or intranet. * * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * Support can be obtained from support forums at: * http://www.mvnForum.com/mvnforum/index * * Correspondence and Marketing Questions can be sent to: * info@MyVietnam.net * * @author: Minh Nguyen minhnn@MyVietnam.net * @author: Mai Nguyen mai.nh@MyVietnam.net */ package com.mvnforum.db.jdbc; import java.sql.*; import java.util.ArrayList; import java.util.Collection; import com.mvnforum.db.*; import net.myvietnam.mvncore.db.DBUtils; import net.myvietnam.mvncore.exception.*; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; public class MemberForumDAOImplJDBC implements MemberForumDAO { private static Log log = LogFactory.getLog(MemberForumDAOImplJDBC.class); // this variable will support caching if cache for this class is needed private static boolean m_dirty = true; public MemberForumDAOImplJDBC() { } protected static boolean isDirty() { return m_dirty; } protected static void setDirty(boolean dirty) { m_dirty = dirty; } public void findByPrimaryKey(int memberID, int forumID, int permission) throws ObjectNotFoundException, DatabaseException { Connection connection = null; PreparedStatement statement = null; ResultSet resultSet = null; StringBuffer sql = new StringBuffer(512); sql.append("SELECT MemberID, ForumID, Permission"); sql.append(" FROM " + TABLE_NAME); sql.append(" WHERE MemberID = ? AND ForumID = ? AND Permission = ?"); try { connection = DBUtils.getConnection(); statement = connection.prepareStatement(sql.toString()); statement.setInt(1, memberID); statement.setInt(2, forumID); statement.setInt(3, permission); resultSet = statement.executeQuery(); if (!resultSet.next()) { throw new ObjectNotFoundException("Cannot find the primary key (" + memberID + ", " + forumID + ", " + permission + ") in table 'MemberForum'."); } } catch(SQLException sqle) { log.error("Sql Execution Error!", sqle); throw new DatabaseException("Error executing SQL in MemberForumDAOImplJDBC.findByPrimaryKey."); } finally { DBUtils.closeResultSet(resultSet); DBUtils.closeStatement(statement); DBUtils.closeConnection(connection); } } /* * Included columns: MemberID, ForumID, Permission * Excluded columns: */ public void create(int memberID, int forumID, int permission) throws CreateException, DatabaseException, DuplicateKeyException, ForeignKeyNotFoundException { // @todo: comment this try-catch block if the needed columns dont have attribute 'include' // If this is the case, then it is highly recommended that you regenerate this method with the attribute 'include' turned on // However, if primary key is a auto_increment column, then you can safely delete this block try { //Check if primary key already exists findByPrimaryKey(memberID, forumID, permission); //If so, then we have to throw an exception throw new DuplicateKeyException("Primary key already exists. Cannot create new MemberForum with the same [MemberID, ForumID, Permission] (" + memberID + ", " + forumID + ", " + permission + ")."); } catch(ObjectNotFoundException e) { //Otherwise we can go ahead } if (memberID!=0) { try { // @todo: modify the parameter list as needed // You may have to regenerate this method if the needed columns dont have attribute 'include' DAOFactory.getMemberDAO().findByPrimaryKey(memberID); } catch(ObjectNotFoundException e) { throw new ForeignKeyNotFoundException("Foreign key refers to table 'mvnforumMember' does not exist. Cannot create new MemberForum."); } } try { // @todo: modify the parameter list as needed // You may have to regenerate this method if the needed columns dont have attribute 'include' DAOFactory.getForumDAO().findByPrimaryKey(forumID); } catch(ObjectNotFoundException e) { throw new ForeignKeyNotFoundException("Foreign key refers to table 'mvnforumForum' does not exist. Cannot create new MemberForum."); } Connection connection = null; PreparedStatement statement = null; StringBuffer sql = new StringBuffer(512); sql.append("INSERT INTO " + TABLE_NAME + " (MemberID, ForumID, Permission)"); sql.append(" VALUES (?, ?, ?)"); try { connection = DBUtils.getConnection(); statement = connection.prepareStatement(sql.toString()); statement.setInt(1, memberID); statement.setInt(2, forumID); statement.setInt(3, permission); if (statement.executeUpdate() != 1) { throw new CreateException("Error adding a row into table 'MemberForum'."); } m_dirty = true; } catch(SQLException sqle) { log.error("Sql Execution Error!", sqle); throw new DatabaseException("Error executing SQL in MemberForumDAOImplJDBC.create."); } finally { DBUtils.closeStatement(statement); DBUtils.closeConnection(connection); } } public void delete(int memberID, int forumID, int permission) throws DatabaseException, ObjectNotFoundException { Connection connection = null; PreparedStatement statement = null; StringBuffer sql = new StringBuffer(512); sql.append("DELETE FROM " + TABLE_NAME); sql.append(" WHERE MemberID = ? AND ForumID = ? AND Permission = ?"); try { connection = DBUtils.getConnection(); statement = connection.prepareStatement(sql.toString()); statement.setInt(1, memberID); statement.setInt(2, forumID); statement.setInt(3, permission); if (statement.executeUpdate() != 1) { throw new ObjectNotFoundException("Cannot delete a row in table MemberForum where primary key = (" + memberID + ", " + forumID + ", " + permission + ")."); } m_dirty = true; } catch(SQLException sqle) { log.error("Sql Execution Error!", sqle); throw new DatabaseException("Error executing SQL in MemberForumDAOImplJDBC.delete."); } finally { DBUtils.closeStatement(statement); DBUtils.closeConnection(connection); } } public void delete_inMember(int memberID) throws DatabaseException { Connection connection = null; PreparedStatement statement = null; StringBuffer sql = new StringBuffer(512); sql.append("DELETE FROM " + TABLE_NAME); sql.append(" WHERE MemberID = ?"); try { connection = DBUtils.getConnection(); statement = connection.prepareStatement(sql.toString()); statement.setInt(1, memberID); statement.executeUpdate(); m_dirty = true; } catch(SQLException sqle) { log.error("Sql Execution Error!", sqle); throw new DatabaseException("Error executing SQL in MemberForumDAOImplJDBC.delete_inMember."); } finally { DBUtils.closeStatement(statement); DBUtils.closeConnection(connection); } } public void delete_inForum(int forumID) throws DatabaseException { Connection connection = null; PreparedStatement statement = null; StringBuffer sql = new StringBuffer(512); sql.append("DELETE FROM " + TABLE_NAME); sql.append(" WHERE ForumID = ? "); try { connection = DBUtils.getConnection(); statement = connection.prepareStatement(sql.toString()); statement.setInt(1, forumID); statement.executeUpdate(); m_dirty = true; } catch(SQLException sqle) { log.error("Sql Execution Error!", sqle); throw new DatabaseException("Error executing SQL in MemberForumDAOImplJDBC.delete_inForum."); } finally { DBUtils.closeStatement(statement); DBUtils.closeConnection(connection); } } /* * Included columns: Permission * Excluded columns: MemberID, ForumID */ public Collection getBeans_inMemberForum(int memberID, int forumID) throws DatabaseException { Connection connection = null; PreparedStatement statement = null; ResultSet resultSet = null; Collection retValue = new ArrayList(); StringBuffer sql = new StringBuffer(512); sql.append("SELECT Permission"); sql.append(" FROM " + TABLE_NAME); sql.append(" WHERE MemberID = ? AND ForumID = ?"); try { connection = DBUtils.getConnection(); statement = connection.prepareStatement(sql.toString()); statement.setInt(1, memberID); statement.setInt(2, forumID); resultSet = statement.executeQuery(); while (resultSet.next()) { MemberForumBean bean = new MemberForumBean(); bean.setMemberID(memberID); bean.setForumID(forumID); bean.setPermission(resultSet.getInt("Permission")); retValue.add(bean); } return retValue; } catch (SQLException sqle) { log.error("Sql Execution Error!", sqle); throw new DatabaseException("Error executing SQL in MemberForumDAOImplJDBC.getBeans_inMemberForum."); } finally { DBUtils.closeResultSet(resultSet); DBUtils.closeStatement(statement); DBUtils.closeConnection(connection); } } /* * Included columns: MemberID, ForumID, Permission * Excluded columns: */ public Collection getBeans_inMember(int memberID) throws DatabaseException { Connection connection = null; PreparedStatement statement = null; ResultSet resultSet = null; Collection retValue = new ArrayList(); StringBuffer sql = new StringBuffer(512); sql.append("SELECT MemberID, ForumID, Permission"); sql.append(" FROM " + TABLE_NAME); sql.append(" WHERE MemberID = ?"); try { connection = DBUtils.getConnection(); statement = connection.prepareStatement(sql.toString()); statement.setInt(1, memberID); resultSet = statement.executeQuery(); while (resultSet.next()) { MemberForumBean bean = new MemberForumBean(); bean.setMemberID(resultSet.getInt("MemberID")); bean.setForumID(resultSet.getInt("ForumID")); bean.setPermission(resultSet.getInt("Permission")); retValue.add(bean); } return retValue; } catch (SQLException sqle) { log.error("Sql Execution Error!", sqle); throw new DatabaseException("Error executing SQL in MemberForumDAOImplJDBC.getBeans_inMember."); } finally { DBUtils.closeResultSet(resultSet); DBUtils.closeStatement(statement); DBUtils.closeConnection(connection); } } /* * Included columns: MemberID, ForumID, Permission * Excluded columns: */ public Collection getBeans_inForum(int forumID) throws DatabaseException { Connection connection = null; PreparedStatement statement = null; ResultSet resultSet = null; Collection retValue = new ArrayList(); StringBuffer sql = new StringBuffer(512); sql.append("SELECT MemberID, ForumID, Permission"); sql.append(" FROM " + TABLE_NAME); sql.append(" WHERE ForumID = ?"); sql.append(" ORDER BY MemberID "); try { connection = DBUtils.getConnection(); statement = connection.prepareStatement(sql.toString()); statement.setInt(1, forumID); resultSet = statement.executeQuery(); while (resultSet.next()) { MemberForumBean bean = new MemberForumBean(); bean.setMemberID(resultSet.getInt("MemberID")); bean.setForumID(resultSet.getInt("ForumID")); bean.setPermission(resultSet.getInt("Permission")); retValue.add(bean); } return retValue; } catch (SQLException sqle) { log.error("Sql Execution Error!", sqle); throw new DatabaseException("Error executing SQL in MemberForumDAOImplJDBC.getBeans_inForum."); } finally { DBUtils.closeResultSet(resultSet); DBUtils.closeStatement(statement); DBUtils.closeConnection(connection); } } }// end of class MemberForumDAOImplJDBC |
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