ingo@621: package de.intevation.gnv.utils;
ingo@621: 
ingo@621: import org.apache.log4j.Logger;
ingo@621: 
ingo@621: 
ingo@621: /**
ingo@621:  * @author Ingo Weinzierl (ingo.weinzierl@intevation.de)
ingo@621:  */
ingo@621: public class MapfileGenerator
ingo@621: extends Thread
ingo@621: {
ingo@621: 
ingo@621:     public static final String MAPFILE_PATH =
ingo@621:         "/artifact-database/map-generator/mapfile/@path";
ingo@621: 
ingo@621:     protected static final long SLEEPTIME = 10 * 1000L; // 10 seconds
ingo@621: 
ingo@621:     private static Logger logger = Logger.getLogger(MapfileGenerator.class);
ingo@621: 
ingo@621:     private static MapfileGenerator instance;
ingo@621: 
ingo@621:     private boolean lock[];
ingo@621: 
ingo@621: 
ingo@621: 
ingo@621:     private MapfileGenerator() {
ingo@621:         lock = new boolean[1];
ingo@621:     }
ingo@621: 
ingo@621: 
ingo@621:     public static void main(String[] args) {
ingo@621:         // TODO Implement me
ingo@621:     }
ingo@621: 
ingo@621: 
ingo@621:     public static synchronized MapfileGenerator getInstance() {
ingo@621:         if (instance == null) {
ingo@621:             instance = new MapfileGenerator();
ingo@621:             instance.setDaemon(true);
ingo@621:             instance.start();
ingo@621:         }
ingo@621: 
ingo@621:         return instance;
ingo@621:     }
ingo@621: 
ingo@621: 
ingo@621:     public void update() {
ingo@621:         synchronized (lock) {
ingo@621:             lock[0] = true;
ingo@621:             lock.notify();
ingo@621:         }
ingo@621:     }
ingo@621: 
ingo@621: 
ingo@621:     public void run() {
ingo@621:         try {
ingo@621:             for (;;) {
ingo@621:                 synchronized (lock) {
ingo@621:                     while (!lock[0]) {
ingo@621:                         lock.wait(SLEEPTIME);
ingo@621:                     }
ingo@621:                     
ingo@621:                     lock[0] = false;
ingo@621:                 }
ingo@621:                 
ingo@621:                 logger.info("Update mapfile for MapServer.");
ingo@621:                 generate();
ingo@621:             }
ingo@621:         }
ingo@621:         catch (InterruptedException ie) {
ingo@621:         }
ingo@621:     }
ingo@621: 
ingo@621: 
ingo@621:     private void generate() {
ingo@621:         logger.debug("IMPLEMENT ME");
ingo@621:     }
ingo@621: }
ingo@621: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8: