favoritethreaddaoimpljdbc.java

java servlet著名论坛源代码

        sql.append(" WHERE ThreadID = ?");

        try {
            connection = DBUtils.getConnection();
            statement = connection.prepareStatement(sql.toString());
            statement.setInt(1, threadID);

            statement.executeUpdate();
            m_dirty = true;
        } catch(SQLException sqle) {
            log.error("Sql Execution Error!", sqle);
            throw new DatabaseException("Error executing SQL in FavoriteThreadDAOImplJDBC.delete_inThread.");
        } 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 FavoriteThreadDAOImplJDBC.delete_inForum.");
        } 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 FavoriteThreadDAOImplJDBC.delete_inMember.");
        } finally {
            DBUtils.closeStatement(statement);
            DBUtils.closeConnection(connection);
        }
    }

    /*
     * Included columns: ForumID
     */
    public void update_ForumID_inThread(int threadID, int forumID)
        throws DatabaseException, ForeignKeyNotFoundException {

        try {
            // @todo: modify the parameter list as needed
            // If this method does not change the foreign key columns, you can comment this block of code.
            DAOFactory.getForumDAO().findByPrimaryKey(forumID);
        } catch(ObjectNotFoundException e) {
            throw new ForeignKeyNotFoundException("Foreign key refers to table 'Forum' does not exist. Cannot update table 'FavoriteThread'.");
        }

        Connection connection = null;
        PreparedStatement statement = null;
        StringBuffer sql = new StringBuffer(512);
        sql.append("UPDATE " + TABLE_NAME + " SET ForumID = ?");
        sql.append(" WHERE ThreadID = ?");
        try {
            connection = DBUtils.getConnection();
            statement = connection.prepareStatement(sql.toString());

            // // column(s) to update
            statement.setInt(1, forumID);

            // primary key column(s)
            statement.setInt(2, threadID);

            statement.executeUpdate();
            m_dirty = true;
        } catch(SQLException sqle) {
            log.error("Sql Execution Error!", sqle);
            throw new DatabaseException("Error executing SQL in FavoriteThreadDAOImplJDBC.update_ForumID_inThread.");
        } finally {
            DBUtils.closeStatement(statement);
            DBUtils.closeConnection(connection);
        }
    }

    /*
     * Included columns: MemberID, ThreadID, FavoriteCreationDate, FavoriteType, FavoriteOption,
     *                   FavoriteStatus
     * 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, ThreadID, FavoriteCreationDate, FavoriteType, FavoriteOption, FavoriteStatus");
        sql.append(" FROM " + TABLE_NAME);
        sql.append(" WHERE MemberID = ?");
        sql.append(" ORDER BY ThreadID ASC ");
        try {
            connection = DBUtils.getConnection();
            statement = connection.prepareStatement(sql.toString());
            statement.setInt(1, memberID);
            resultSet = statement.executeQuery();
            while (resultSet.next()) {
                FavoriteThreadBean bean = new FavoriteThreadBean();
                bean.setMemberID(resultSet.getInt("MemberID"));
                bean.setThreadID(resultSet.getInt("ThreadID"));
                bean.setFavoriteCreationDate(resultSet.getTimestamp("FavoriteCreationDate"));
                bean.setFavoriteType(resultSet.getInt("FavoriteType"));
                bean.setFavoriteOption(resultSet.getInt("FavoriteOption"));
                bean.setFavoriteStatus(resultSet.getInt("FavoriteStatus"));
                retValue.add(bean);
            }
            return retValue;
        } catch(SQLException sqle) {
            log.error("Sql Execution Error!", sqle);
            throw new DatabaseException("Error executing SQL in FavoriteThreadDAOImplJDBC.getBeans_inMember.");
        } finally {
            DBUtils.closeResultSet(resultSet);
            DBUtils.closeStatement(statement);
            DBUtils.closeConnection(connection);
        }
    }

    public int getNumberOfBeans()
        throws AssertionException, DatabaseException {

        Connection connection = null;
        PreparedStatement statement = null;
        ResultSet resultSet = null;
        StringBuffer sql = new StringBuffer(512);
        sql.append("SELECT Count(*)");
        sql.append(" FROM " + TABLE_NAME);
        //sql.append(" WHERE "); // @todo: uncomment as needed
        try {
            connection = DBUtils.getConnection();
            statement = connection.prepareStatement(sql.toString());
            resultSet = statement.executeQuery();
            if (!resultSet.next()) {
                throw new AssertionException("Assertion in FavoriteThreadDAOImplJDBC.getNumberOfBeans.");
            }
            return resultSet.getInt(1);
        } catch(SQLException sqle) {
            log.error("Sql Execution Error!", sqle);
            throw new DatabaseException("Error executing SQL in FavoriteThreadDAOImplJDBC.getNumberOfBeans.");
        } finally {
            DBUtils.closeResultSet(resultSet);
            DBUtils.closeStatement(statement);
            DBUtils.closeConnection(connection);
        }
    }

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

        Connection connection = null;
        PreparedStatement statement = null;
        ResultSet resultSet = null;
        StringBuffer sql = new StringBuffer(512);
        sql.append("SELECT Count(*)");
        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 FavoriteThreadDAOImplJDBC.getNumberOfBeans_inMember.");
            }
            return resultSet.getInt(1);
        } catch(SQLException sqle) {
            log.error("Sql Execution Error!", sqle);
            throw new DatabaseException("Error executing SQL in FavoriteThreadDAOImplJDBC.getNumberOfBeans_inMember.");
        } finally {
            DBUtils.closeResultSet(resultSet);
            DBUtils.closeStatement(statement);
            DBUtils.closeConnection(connection);
        }
    }

}// end of class FavoriteThreadDAOImplJDBC