--- android/TrainInfo/src/dk/thoerup/traininfo/util/AndroidTimeoutCache.java	2009/10/02 19:01:53	390
+++ android/TrainInfo/src/dk/thoerup/traininfo/util/AndroidTimeoutCache.java	2010/09/08 09:29:42	1032
@@ -1,6 +1,10 @@
 package dk.thoerup.traininfo.util;
 
 import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Set;
+
+import android.util.Log;
 
 
 public class AndroidTimeoutCache<K,V> {
@@ -23,6 +27,25 @@
 		this.timeout = timeout; 
 	}
 	
+	public void purgeOldEntries() {
+		
+		long now = android.os.SystemClock.elapsedRealtime();
+		//Log.e("Purge","Purge");
+		
+		Set<K> keyset = cache.keySet();
+		
+		for ( Iterator<K> it = keyset.iterator(); it.hasNext() ;) {
+			K key = it.next();
+			
+			CacheItem<V> item = cache.get(key);
+			if ( (item.lastupdate+timeout) < now) { //item too old
+				it.remove();
+				//Log.e("Purge", "removing");
+			}			
+		}	
+		
+	}
+	
 	public void put(K k, V v) {
 		CacheItem<V> item= new CacheItem<V>(v);
 		cache.put(k, item);