traininfo/provider/ProviderFactory.java

package dk.thoerup.traininfo.provider;


public class ProviderFactory {
        private static DepartureProvider departureProvider = null;
        private static StationProvider stationProvider = null;
        private static TimetableProvider timetableProvider = null;
        
        private static final boolean DEBUG = false;
        
        //TODO: this one really doesn't belong here ... and damn it is ugly code
        public static void purgeOldEntries() {          
                synchronized (ProviderFactory.class) {
                        if (stationProvider != null && stationProvider instanceof XmlStationProvider) { 
                                ((XmlStationProvider)stationProvider).stationCache.purgeOldEntries();
                        }
                        
                        if (departureProvider != null && departureProvider instanceof XmlDepartureProvider) { 
                                ((XmlDepartureProvider)departureProvider).departureCache.purgeOldEntries();
                        }
                        
                        if (timetableProvider != null && timetableProvider instanceof XmlTimetableProvider) { 
                                ((XmlTimetableProvider)timetableProvider).timetableCache.purgeOldEntries();
                        }
                }

        }
        
        public static DepartureProvider getDepartureProvider() {
                if (departureProvider == null) {
                        if (!DEBUG) {
                                departureProvider = new XmlDepartureProvider();
                        } else {
                                departureProvider = new DebugProvider();
                        }
                }
                
                return departureProvider;
        }
        
        public static StationProvider getStationProvider() {
                if (stationProvider == null) {
                        if (!DEBUG) {
                                stationProvider = new XmlStationProvider();
                        } else {
                                stationProvider = new DebugProvider();
                        }
                }
                
                return stationProvider;
        }
        
        public static TimetableProvider getTimetableProvider() {
                if (timetableProvider == null) {
                        if (!DEBUG) {
                                timetableProvider = new XmlTimetableProvider();
                        } else {
                                timetableProvider = new DebugProvider();
                        }
                }
                return timetableProvider;
        }
}
1	package dk.thoerup.traininfo.provider;
2
3
4
5
6	public class ProviderFactory {
7	private static DepartureProvider departureProvider = null;
8	private static StationProvider stationProvider = null;
9	private static TimetableProvider timetableProvider = null;
10
11	private static final boolean DEBUG = false;
12
13	//TODO: this one really doesn't belong here ... and damn it is ugly code
14	public static void purgeOldEntries() {
15	synchronized (ProviderFactory.class) {
16	if (stationProvider != null && stationProvider instanceof XmlStationProvider) {
17	((XmlStationProvider)stationProvider).stationCache.purgeOldEntries();
18	}
19
20	if (departureProvider != null && departureProvider instanceof XmlDepartureProvider) {
21	((XmlDepartureProvider)departureProvider).departureCache.purgeOldEntries();
22	}
23
24	if (timetableProvider != null && timetableProvider instanceof XmlTimetableProvider) {
25	((XmlTimetableProvider)timetableProvider).timetableCache.purgeOldEntries();
26	}
27	}
28
29	}
30
31	public static DepartureProvider getDepartureProvider() {
32	if (departureProvider == null) {
33	if (!DEBUG) {
34	departureProvider = new XmlDepartureProvider();
35	} else {
36	departureProvider = new DebugProvider();
37	}
38	}
39
40	return departureProvider;
41	}
42
43	public static StationProvider getStationProvider() {
44	if (stationProvider == null) {
45	if (!DEBUG) {
46	stationProvider = new XmlStationProvider();
47	} else {
48	stationProvider = new DebugProvider();
49	}
50	}
51
52	return stationProvider;
53	}
54
55	public static TimetableProvider getTimetableProvider() {
56	if (timetableProvider == null) {
57	if (!DEBUG) {
58	timetableProvider = new XmlTimetableProvider();
59	} else {
60	timetableProvider = new DebugProvider();
61	}
62	}
63	return timetableProvider;
64	}
65	}