/* Some code */

stmtExtractSession = db.prepareStatement(
                    "SELECT session_id, step, pg_desc, resp_body, session_log.tstamp as tstamp " +
                    "FROM session_log INNER JOIN sessions " +
                    "ON (session_id = id) " +
                    "WHERE s_id = ?;");

/* Some code */

public void processFeature(String s_id, Feature feature)
                throws SQLException
        {
                stmtExtractSession.setString(1, s_id);

                Logger log = WebCrawler.getLog();
                OptParser opts = WebCrawler.getOpts();

                ResultSet rs = stmtExtractSession.executeQuery();

                try {
                        while (rs.next()) {
                                feature.calculate(rs.getString("resp_body"));

                                log.log(Level.INFO,
                                        "Calculating feature " + feature.getName() +
                                        " for site " + s_id +
                                        " for row/session " + rs.getLong("session_id") +
                                        " and page " + rs.getString("pg_desc") +
                                        " at step " + rs.getInt("step") +
                                        " crawled on " + rs.getTimestamp("tstamp").toString() +
                                        ", value: " + feature.toString(),
                                        LOG_ID);

                                if (!opts.getTesting())
                                        insertFeature(feature, rs.getLong("session_id"), rs.getInt("step"));
                        }

                } finally {
                        if (rs != null)
                                rs.close();
                }

        }