summaryrefslogtreecommitdiffstats
path: root/docs/teaching/exercises/answers/Answer4b.java
diff options
context:
space:
mode:
authorjhugunin <jhugunin>2003-08-01 18:53:07 +0000
committerjhugunin <jhugunin>2003-08-01 18:53:07 +0000
commit57445dd3ec8a67d06f16fe02e7c0eaefb8ea4051 (patch)
tree4797aad7b10f19d1d71c71699d3e95de0a4d9262 /docs/teaching/exercises/answers/Answer4b.java
parenta92e9c5c8c8646ec08759b7a940a6d32f2c541c6 (diff)
downloadaspectj-57445dd3ec8a67d06f16fe02e7c0eaefb8ea4051.tar.gz
aspectj-57445dd3ec8a67d06f16fe02e7c0eaefb8ea4051.zip
Addendum to the original contribution from PARC. Three presentations:
oneHour talk three hour tutorial six hour tutorial including exercises
Diffstat (limited to 'docs/teaching/exercises/answers/Answer4b.java')
-rw-r--r--docs/teaching/exercises/answers/Answer4b.java29
1 files changed, 29 insertions, 0 deletions
diff --git a/docs/teaching/exercises/answers/Answer4b.java b/docs/teaching/exercises/answers/Answer4b.java
new file mode 100644
index 000000000..d0292b14f
--- /dev/null
+++ b/docs/teaching/exercises/answers/Answer4b.java
@@ -0,0 +1,29 @@
+/* *******************************************************************
+ * Copyright (c) 2002 Palo Alto Research Center, Incorporated (PARC).
+ * All rights reserved.
+ * This program and the accompanying materials are made available
+ * under the terms of the Common Public License v1.0
+ * which accompanies this distribution and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ *
+ * Contributors:
+ * PARC initial implementation
+ * ******************************************************************/
+
+package answers;
+
+import figures.FigureElement;
+import figures.Group;
+import java.awt.Rectangle;
+
+aspect Answer4b {
+ private Rectangle Group.cache = null;
+
+ Rectangle around(Group g):
+ execution(Rectangle Group.getBounds()) && this(g) {
+ if (g.cache == null) {
+ g.cache = proceed(g);
+ }
+ return g.cache;
+ }
+}