Support of AspectJ language

samples/AspectJ/OptimizeRecursionCache.aj

@@ -0,0 +1,50 @@
+package aspects.caching;
+
+import java.util.Map;
+
+/**
+ * Cache aspect for optimize recursive functions.
+ * 
+ * @author Migueli
+ * @date 05/11/2013
+ * @version 1.0
+ *
+ */
+public abstract aspect OptimizeRecursionCache {
+		
+	@SuppressWarnings("rawtypes")
+	private Map _cache;
+	
+	public OptimizeRecursionCache() {
+		_cache = getCache();
+	}
+	
+	@SuppressWarnings("rawtypes")
+	abstract public Map getCache();
+	
+	abstract public pointcut operation(Object o);
+
+	pointcut topLevelOperation(Object o): operation(o) && !cflowbelow(operation(Object));
+
+	before(Object o) : topLevelOperation(o) {
+		System.out.println("Seeking value for " + o);
+	}
+
+	Object around(Object o) : operation(o) {
+		Object cachedValue = _cache.get(o);
+		if (cachedValue != null) {
+			System.out.println("Found cached value for " + o + ": " + cachedValue);
+			return cachedValue;
+		}
+		return proceed(o);
+	}
+
+	@SuppressWarnings("unchecked")
+	after(Object o) returning(Object result) : topLevelOperation(o) {
+		_cache.put(o, result);
+	}
+	
+	after(Object o) returning(Object result) : topLevelOperation(o) {
+		System.out.println("cache size: " + _cache.size());
+	}
+}