esercizi webservices wsdl

exam/MDB.java

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+package exam;
+
+
+
+import javax.ejb.MessageDriven;
+import javax.inject.Inject;
+import javax.jms.JMSException;
+import javax.jms.Message;
+import javax.jms.MessageListener;
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * Created by Giovanni on 16/06/2015.
+ */
+
+@MessageDriven(mappedName = "jms/javaee7/Topic")
+public class MDB implements MessageListener {
+
+    @Inject
+    EJB e;
+
+
+    public void onMessage(Message m) {
+
+        try {
+            GeneralMessage gm = m.getBody(GeneralMessage.class);
+            List<CD> l = e.findid(gm.getId());
+            Iterator<CD> i = l.iterator();
+            if (i.hasNext()){
+                CD temp = i.next();
+                temp.setPrice(gm.getPrice());
+                e.updateCD(temp);
+            }
+
+        } catch (JMSException e) { // added try catch for JMSException
+            e.printStackTrace();
+        }
+
+
+    }
+
+}