import ianywhere.ml.script.*;
import java.sql.*;

public class StartTemplate extends
    Thread implements ShutdownListener {
    ServerContext   _sc;
    Connection      _conn;
    boolean         _exit_loop;

    public StartTemplate(ServerContext sc) throws SQLException {

        // Perform setup first so that an exception 
        // causes MobiLink startup to fail.
        _sc = sc;

        // Create a connection for use later.
        _conn = _sc.makeConnection();

        _exit_loop = false;
        setDaemon(true);
        start();
    }

    public void run() {
        _sc.addShutdownListener(this);

        // run() cannot throw exceptions.
        try {
            handlerLoop();
            _conn.close();
            _conn = null;
        }
        catch(Exception e) {
    
            // Print some error output to the MobiLink log.
            e.printStackTrace();
 
            // This thread shuts down and so does not 
            // need to be notified of shutdown.
            _sc.removeShutdownListener(this);
    
            // Ask server to shutdown so that this fatal
            // error is fixed.
            _sc.shutdown();
        }
        // Shortly after return this thread no longer exists.
        return;
    }
 
    // stop our event handler loop
    public void shutdownPerformed(ServerContext sc) {
        try {
            // Wait max 10 seconds for thread to die.
            join(10*1000);
        }
        catch(Exception e) {
            // Print some error output to the MobiLink log.
            e.printStackTrace();
        }
    }

    private void handlerLoop() throws InterruptedException {
        while (!_exit_loop) {
            // Handle events in this loop. Sleep not
            // needed, block on event queue.
            sleep(1 * 1000);
        }
    }
}