w11 design patterns

w10-patterns/observer/uml.wsd

@@ -0,0 +1,38 @@
+class Subject {
+  - observers: Observer [] 
+  + constructor();
+  + subscribe(observer: Observer);
+  + unsubscribeAll();
+  + unsubscribe(observer);
+  + notifiSubstribers();
+}
+
+class Observer {
+  + {abstract} update(src: Subject);
+}
+
+
+class Fish extends Subject {
+  - species: String;
+  - weight: Number;
+
+  + constructor(weight: Number);
+  + getWeight(): Number;
+  + getSpecies(): String;
+}
+
+class Salmon extends Fish {
+  + constructor();
+}
+
+class Tuna extends Fish {
+  + constructor();
+}
+
+class Fisherman extends Observer {
+  - name: String;
+  + constructor(name: String);
+  + update(src);
+}
+
+Fisherman "1" -left- "many" Fish : has