messagefolderdaoimpljdbc.java

解觖java技术中后台无法上传数给的情况

        Connection connection = null;
        PreparedStatement statement = null;
        ResultSet resultSet = null;
        StringBuffer sql = new StringBuffer(512);
        sql.append("SELECT FolderName, MemberID, FolderOrder, FolderStatus, FolderOption, FolderType, FolderCreationDate, FolderModifiedDate");
        sql.append(" FROM " + TABLE_NAME);
        sql.append(" WHERE FolderName = ? AND MemberID = ?");
        try {
            connection = DBUtils.getConnection();
            statement = connection.prepareStatement(sql.toString());
            statement.setString(1, folderName);
            statement.setInt(2, memberID);
            resultSet = statement.executeQuery();
            if(!resultSet.next()) {
                throw new ObjectNotFoundException("Cannot find the row in table MessageFolder where primary key = (" + folderName + ", " + memberID + ").");
            }

            MessageFolderBean bean = new MessageFolderBean();
            // @todo: uncomment the following line(s) as needed
            //bean.setFolderName(folderName);
            //bean.setMemberID(memberID);
            bean.setFolderName(resultSet.getString("FolderName"));
            bean.setMemberID(resultSet.getInt("MemberID"));
            bean.setFolderOrder(resultSet.getInt("FolderOrder"));
            bean.setFolderStatus(resultSet.getInt("FolderStatus"));
            bean.setFolderOption(resultSet.getInt("FolderOption"));
            bean.setFolderType(resultSet.getInt("FolderType"));
            bean.setFolderCreationDate(resultSet.getTimestamp("FolderCreationDate"));
            bean.setFolderModifiedDate(resultSet.getTimestamp("FolderModifiedDate"));
            return bean;
        } catch(SQLException sqle) {
            log.error("Sql Execution Error!", sqle);
            throw new DatabaseException("Error executing SQL in MessageFolderDAOImplJDBC.getMessageFolder(pk).");
        } finally {
            DBUtils.closeResultSet(resultSet);
            DBUtils.closeStatement(statement);
            DBUtils.closeConnection(connection);
        }
    }

    /*
     * Included columns: FolderName, MemberID, FolderOrder, FolderStatus, FolderOption,
     *                   FolderType, FolderCreationDate, FolderModifiedDate
     *
     * Excluded columns:
     */
    public Collection getMessageFolders_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 FolderName, MemberID, FolderOrder, FolderStatus, FolderOption, FolderType, FolderCreationDate, FolderModifiedDate");
        sql.append(" FROM " + TABLE_NAME);
        sql.append(" WHERE MemberID = ?");
        sql.append(" ORDER BY FolderOrder ASC ");
        try {
            connection = DBUtils.getConnection();
            statement = connection.prepareStatement(sql.toString());
            statement.setInt(1, memberID);
            resultSet = statement.executeQuery();
            while (resultSet.next()) {
                MessageFolderBean bean = new MessageFolderBean();
                bean.setFolderName(resultSet.getString("FolderName"));
                bean.setMemberID(resultSet.getInt("MemberID"));
                bean.setFolderOrder(resultSet.getInt("FolderOrder"));
                bean.setFolderStatus(resultSet.getInt("FolderStatus"));
                bean.setFolderOption(resultSet.getInt("FolderOption"));
                bean.setFolderType(resultSet.getInt("FolderType"));
                bean.setFolderCreationDate(resultSet.getTimestamp("FolderCreationDate"));
                bean.setFolderModifiedDate(resultSet.getTimestamp("FolderModifiedDate"));
                retValue.add(bean);
            }
            return retValue;
        } catch(SQLException sqle) {
            log.error("Sql Execution Error!", sqle);
            throw new DatabaseException("Error executing SQL in MessageFolderDAOImplJDBC.getMessageFolders_inMember.");
        } finally {
            DBUtils.closeResultSet(resultSet);
            DBUtils.closeStatement(statement);
            DBUtils.closeConnection(connection);
        }
    }

    public int getMaxFolderOrder(int memberID)
        throws DatabaseException, AssertionException {

        Connection connection = null;
        PreparedStatement statement = null;
        ResultSet resultSet = null;
        StringBuffer sql = new StringBuffer(512);

        sql.append("SELECT MAX(FolderOrder)");
        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();
            if (!resultSet.next()) {
                throw new AssertionException("Assertion in MessageFolderDAOImplJDBC.getMaxFolderOrder.");
            }
            return resultSet.getInt(1);
        } catch(SQLException sqle) {
            log.error("Sql Execution Error!", sqle);
            throw new DatabaseException("Error executing SQL in MessageFolderDAOImplJDBC.getMaxFolderOrder(memberID).");
        } finally {
            DBUtils.closeResultSet(resultSet);
            DBUtils.closeStatement(statement);
            DBUtils.closeConnection(connection);
        }
    }

    /*
     * Included columns: FolderOrder, FolderModifiedDate
     * Excluded columns: FolderName, MemberID, FolderStatus, FolderOption, FolderType,
     *                   FolderCreationDate
     */
    public void increaseFolderOrder(String folderName, int memberID, // primary key
                                    Timestamp folderModifiedDate)
        throws ObjectNotFoundException, DatabaseException {

        Connection connection = null;
        PreparedStatement statement = null;
        StringBuffer sql = new StringBuffer(512);
        sql.append("UPDATE " + TABLE_NAME + " SET FolderOrder = FolderOrder + 1, FolderModifiedDate = ?");
        sql.append(" WHERE FolderName = ? AND MemberID = ?");
        try {
            connection = DBUtils.getConnection();
            statement = connection.prepareStatement(sql.toString());

            // // column(s) to update
            statement.setTimestamp(1, folderModifiedDate);

            // primary key column(s)
            statement.setString(2, folderName);
            statement.setInt(3, memberID);

            if (statement.executeUpdate() != 1) {
                throw new ObjectNotFoundException("Cannot update table MessageFolder where primary key = (" + folderName + ", " + memberID + ").");
            }
            m_dirty = true;
        } catch(SQLException sqle) {
            log.error("Sql Execution Error!", sqle);
            throw new DatabaseException("Error executing SQL in MessageFolderDAOImplJDBC.increaseFolderOrder.");
        } finally {
            DBUtils.closeStatement(statement);
            DBUtils.closeConnection(connection);
        }
    }

    /*
     * Included columns: FolderOrder, FolderModifiedDate
     * Excluded columns: FolderName, MemberID, FolderStatus, FolderOption, FolderType,
     *                   FolderCreationDate
     */
    public void decreaseFolderOrder(String folderName, int memberID, // primary key
                                    Timestamp folderModifiedDate)
        throws ObjectNotFoundException, DatabaseException {

        Connection connection = null;
        PreparedStatement statement = null;
        StringBuffer sql = new StringBuffer(512);
        sql.append("UPDATE " + TABLE_NAME + " SET FolderOrder = FolderOrder - 1, FolderModifiedDate = ?");
        sql.append(" WHERE FolderName = ? AND MemberID = ?");
        try {
            connection = DBUtils.getConnection();
            statement = connection.prepareStatement(sql.toString());

            // // column(s) to update
            statement.setTimestamp(1, folderModifiedDate);

            // primary key column(s)
            statement.setString(2, folderName);
            statement.setInt(3, memberID);

            if (statement.executeUpdate() != 1) {
                throw new ObjectNotFoundException("Cannot update table MessageFolder where primary key = (" + folderName + ", " + memberID + ").");
            }
            m_dirty = true;
        } catch(SQLException sqle) {
            log.error("Sql Execution Error!", sqle);
            throw new DatabaseException("Error executing SQL in MessageFolderDAOImplJDBC.decreaseFolderOrder.");
        } finally {
            DBUtils.closeStatement(statement);
            DBUtils.closeConnection(connection);
        }
    }
}// end of class MessageFolderDAOImplJDBC