Changes between Version 7 and Version 8 of Documentation/Howto/OptimizeExternalApplications

Timestamp:

06/04/10 16:24:34 (14 years ago)

Author:

abeham

Comment:

--

Documentation/Howto/OptimizeExternalApplications

@@ -53 +53 @@
 [[Image(ExternalEvaluationServiceTestCD.png)]]
 
-Here is the java code for the main method of the `RandomStreamingPollEvaluator`
+
+==== Usage examples ====
+
+Here is the java code for the `RandomStreamingPollEvaluator`
 
 {{{#!java
-public static void main(String[] args) {
-        StreamChannelFactory factory = new StreamChannelFactory(System.in, System.out);
-        PollService service = new PollService(factory, 1);
-        service.start();
-        
-        Random random = new Random();
-        while (true) {
-                SolutionMessage msg = service.getSolution();
-                // parse the message and retrieve the variables there
-                try {
-                        service.sendQuality(msg, random.nextDouble());
-                } catch (IOException e) {
-                        break;
+public class RandomStreamingPollEvaluator {
+
+        public static void main(String[] args) {
+                StreamChannelFactory factory = new StreamChannelFactory(System.in, System.out);
+                PollService service = new PollService(factory, 1);
+                service.start();
+                
+                Random random = new Random();
+                while (true) {
+                        SolutionMessage msg = service.getSolution();
+                        // parse the message and retrieve the variables there
+                        try {
+                                service.sendQuality(msg, random.nextDouble());
+                        } catch (IOException e) {
+                                break;
+                        }
                 }
+                
+                service.stop();
         }
-        
-        service.stop();
 }
 }}}
 
-This code shows a concrete example of how to use the !PollService and the ease of integrating this into an external java application.
+This code shows a concrete example of how to use the !PollService and the ease of integrating this into an external java application. Using a !PushService is slightly different as can be seen in the following example. As mentioned it depends on the application which of the two possibilities is more suited.
+
+{{{#!java
+public class RandomSocketPushEvaluator {
+        private PushService service;
+        
+        public static void main(String[] args) {
+                RandomSocketPushEvaluator main = new RandomSocketPushEvaluator();
+                main.run();
+                System.out.println("Service is running, terminate by pressing <Return> or <Enter>.");
+                System.console().readLine();
+                main.terminate();
+        }
+        
+        private void run() {
+                ServerSocketChannelFactory factory = new ServerSocketChannelFactory(8843);
+                service = new PushService(factory, 1, new RandomEvaluator());
+                service.start();
+        }
+        
+        private void terminate() {
+                service.stop();
+        }
+        
+        private class RandomEvaluator implements IEvaluationService {
+                Random random;
+                
+                public RandomEvaluator() {
+                        random = new Random();
+                }
+                
+                @Override
+                public double evaluate(SolutionMessage msg) {
+                        return random.nextDouble();
+                }
+                
+        }
+}
+}}}
 
 === Preparing an `ExternalEvaluationProblem` ===