source: src/main/java/genius/gui/progress/MultipartyNegoEventLogger.java@ 84

package genius.gui.progress;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;

import genius.core.logging.CsvLogger;
import genius.core.session.MultipartyNegoEventLoggerData;
import genius.core.session.TournamentManager;
import genius.gui.negosession.MultiPartyDataModel;
import genius.gui.tournament.MultiTournamentPanel;
import joptsimple.internal.Strings;

/**
 * Logger for MultiPartyNegotiationEvents. Currently only for hook into the
 * {@link TournamentManager} but may be generalizable and eg used in
 * {@link MultiTournamentPanel}. The logger simply listens to changes in the
 * tableModel.
 * 
 * 
 * @author W.Pasman 18jun15
 *
 */
public class MultipartyNegoEventLogger implements TableModelListener {

        private MultipartyNegoEventLoggerData data = new MultipartyNegoEventLoggerData();

        MultiPartyDataModel model;

        /**
         * 
         * @param name
         *            filename but without .csv extension.
         * @param numAgents
         * @param m
         * @throws IOException
         *             if log file can't be created
         */
        public MultipartyNegoEventLogger(String name, int numAgents, MultiPartyDataModel m) throws IOException {
                model = m;
                data.logger = new CsvLogger(name + ".csv");
                logHeader();

        }

        /**
         * write the header to the log file.
         */
        private void logHeader() {
                List<String> headers = new ArrayList<String>();
                for (int col = 0; col < model.getColumnCount(); col++) {
                        headers.add(model.getColumnName(col));
                }
                data.logger.logLine(Strings.join(headers, ";"));

        }

        /**
         * Any insert in the model is caught here, to be logged. All values in the
         * new row are added, converted to string
         */
        @Override
        public void tableChanged(TableModelEvent evt) {
                if (evt.getType() == TableModelEvent.INSERT) {
                        int row = evt.getFirstRow();

                        List<String> elements = new ArrayList<String>();
                        for (int col = 0; col < model.getColumnCount(); col++) {
                                Object value = model.getValueAt(row, col);
                                elements.add(value == null ? "" : value.toString());
                        }

                        data.logger.logLine(Strings.join(elements, ";"));
                }
        }

        public void close() {
                if (data.logger != null) {
                        try {
                                data.logger.close();
                        } catch (IOException e) {
                                e.printStackTrace();
                        }
                }
        }

}