groupforumdaoimpljdbc.java

解觖java技术中后台无法上传数给的情况

            statement.setInt(1, groupID);

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


/************************************************
 * Customized methods come below
 ************************************************/

    /*
     * Included columns: Permission
     * Excluded columns: GroupID, ForumID
     */
    public Collection getBeans_inGroupForum(int groupID, 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 GroupID = ? AND ForumID = ?"); // @todo: uncomment as needed
        //sql.append(" ORDER BY ColumnName ASC|DESC "); // @todo: uncomment as needed
        try {
            connection = DBUtils.getConnection();
            statement = connection.prepareStatement(sql.toString());
            statement.setInt(1, groupID);
            statement.setInt(2, forumID);

            resultSet = statement.executeQuery();
            while (resultSet.next()) {
                GroupForumBean bean = new GroupForumBean();
                bean.setGroupID(groupID);
                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 GroupForumDAOImplJDBC.getBeans_inGroupForum.");
        } finally {
            DBUtils.closeResultSet(resultSet);
            DBUtils.closeStatement(statement);
            DBUtils.closeConnection(connection);
        }
    }

    /*
     * Included columns: GroupID, 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 GroupID, ForumID, Permission");
        sql.append(" FROM " + TABLE_NAME);
        sql.append(" WHERE ForumID = ? ");
        sql.append(" ORDER BY GroupID ");
        try {
            connection = DBUtils.getConnection();
            statement = connection.prepareStatement(sql.toString());
            statement.setInt(1, forumID);

            resultSet = statement.executeQuery();
            while (resultSet.next()) {
                GroupForumBean bean = new GroupForumBean();
                bean.setGroupID(resultSet.getInt("GroupID"));
                bean.setForumID(resultSet.getInt("ForumID"));
                bean.setPermission(resultSet.getInt("Permission"));
                retValue.add(bean);
            }
            return retValue;
        } catch (SQLException sqle) {
            sqle.printStackTrace();
            throw new DatabaseException("Error executing SQL in GroupForumDAOImplJDBC.getBeans_inForum.");
        } finally {
            DBUtils.closeResultSet(resultSet);
            DBUtils.closeStatement(statement);
            DBUtils.closeConnection(connection);
        }
    }

    /*
     * Included columns: GroupID, ForumID, Permission
     * Excluded columns:
     */
    public Collection getBeans_inGroup(int groupID)
        throws DatabaseException {

        Connection connection = null;
        PreparedStatement statement = null;
        ResultSet resultSet = null;
        Collection retValue = new ArrayList();
        StringBuffer sql = new StringBuffer(512);
        sql.append("SELECT GroupID, ForumID, Permission");
        sql.append(" FROM " + TABLE_NAME);
        sql.append(" WHERE GroupID = ? ");
        sql.append(" ORDER BY ForumID ");

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

            resultSet = statement.executeQuery();
            while (resultSet.next()) {
                GroupForumBean bean = new GroupForumBean();
                bean.setGroupID(resultSet.getInt("GroupID"));
                bean.setForumID(resultSet.getInt("ForumID"));
                bean.setPermission(resultSet.getInt("Permission"));
                retValue.add(bean);
            }
            return retValue;
        } catch (SQLException sqle) {
            sqle.printStackTrace();
            throw new DatabaseException("Error executing SQL in GroupForumDAOImplJDBC.getBeans_inGroup.");
        } finally {
            DBUtils.closeResultSet(resultSet);
            DBUtils.closeStatement(statement);
            DBUtils.closeConnection(connection);
        }
    }

    /*
     * Included columns: GroupID
     * Excluded columns: Permission
     */
    public Collection getDistinctGroups()
        throws DatabaseException {

        Connection connection = null;
        PreparedStatement statement = null;
        ResultSet resultSet = null;
        Collection retValue = new ArrayList();
        StringBuffer sql = new StringBuffer(512);
        sql.append("SELECT DISTINCT GroupID");
        sql.append(" FROM " + TABLE_NAME);
        sql.append(" ORDER BY GroupID ASC ");
        try {
            connection = DBUtils.getConnection();
            statement = connection.prepareStatement(sql.toString());
            resultSet = statement.executeQuery();
            while (resultSet.next()) {
                GroupForumBean bean = new GroupForumBean();
                bean.setGroupID(resultSet.getInt("GroupID"));
                retValue.add(bean);
            }
            return retValue;
        } catch(SQLException sqle) {
            log.error("Sql Execution Error!", sqle);
            throw new DatabaseException("Error executing SQL in GroupForumDAOImplJDBC.getDistinctGroups.");
        } finally {
            DBUtils.closeResultSet(resultSet);
            DBUtils.closeStatement(statement);
            DBUtils.closeConnection(connection);
        }
    }
}// end of class GroupForumDAOImplJDBC