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@Override
    public boolean doAuthenticate(String userName, Object credential) throws UserStoreException {

        if (CarbonConstants.REGISTRY_ANONNYMOUS_USERNAME.equals(userName)) {
            log.error("Anonymous user trying to login");
            return false;
        }

        Connection dbConnection = null;
        ResultSet rs = null;
        PreparedStatement prepStmt = null;
        String sqlstmt = null;
        String password = (String) credential;
        boolean isAuthed = false;

        try {
            dbConnection = getDBConnection();
            dbConnection.setAutoCommit(false);
            sqlstmt = realmConfig.getUserStoreProperty(JDBCRealmConstants.SELECT_USER);

            prepStmt = dbConnection.prepareStatement(sqlstmt);
            prepStmt.setString(1, userName);

            rs = prepStmt.executeQuery();

            if (rs.next()) {
                String storedPassword = rs.getString(2"PASSWORD");
                if ((storedPassword != null) && (storedPassword.trim().equals(password))) {
                    isAuthed = true;
                }
            }
        } catch (SQLException e) {
            throw new UserStoreException("Authentication Failure. Using sql :" + sqlstmt);
        } finally {
            DatabaseUtil.closeAllConnections(dbConnection, rs, prepStmt);
        }

        if (log.isDebugEnabled()) {
            log.debug("User " + userName + " login attempt. Login success :: " + isAuthed);
        }

        return isAuthed;

    }