1 files changed, 55 insertions, 0 deletions
diff --git a/subsonic-android/src/net/sourceforge/subsonic/androidapp/util/TimeLimitedCache.java b/subsonic-android/src/net/sourceforge/subsonic/androidapp/util/TimeLimitedCache.java
new file mode 100644
index 00000000..5df5901e
--- /dev/null
+++ b/subsonic-android/src/net/sourceforge/subsonic/androidapp/util/TimeLimitedCache.java
@@ -0,0 +1,55 @@
+/*
+ This file is part of Subsonic.
+
+ Subsonic is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Subsonic is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Subsonic.  If not, see <http://www.gnu.org/licenses/>.
+
+ Copyright 2009 (C) Sindre Mehus
+ */
+package net.sourceforge.subsonic.androidapp.util;
+
+import java.lang.ref.SoftReference;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * @author Sindre Mehus
+ * @version $Id$
+ */
+public class TimeLimitedCache<T> {
+
+    private SoftReference<T> value;
+    private final long ttlMillis;
+    private long expires;
+
+    public TimeLimitedCache(long ttl, TimeUnit timeUnit) {
+        this.ttlMillis = TimeUnit.MILLISECONDS.convert(ttl, timeUnit);
+    }
+
+    public T get() {
+        return System.currentTimeMillis() < expires ? value.get() : null;
+    }
+
+    public void set(T value) {
+        set(value, ttlMillis, TimeUnit.MILLISECONDS);
+    }
+
+    public void set(T value, long ttl, TimeUnit timeUnit) {
+        this.value = new SoftReference<T>(value);
+        expires = System.currentTimeMillis() + timeUnit.toMillis(ttl);
+    }
+
+    public void clear() {
+        expires = 0L;
+        value = null;
+    }
+}