Add observer priority example

atheedom · atheedom · commit f03412a612b4 · 2017-10-10T14:16:05.000+01:00
diff --git a/CDI-2-0/src/main/java/com/readlearncode/priority/AuditEventReciever4.java b/CDI-2-0/src/main/java/com/readlearncode/priority/AuditEventReciever4.java
@@ -2,6 +2,7 @@
 
 import com.readlearncode.async.AuditEvent;
 
+import javax.annotation.Priority;
 import javax.enterprise.context.ApplicationScoped;
 import javax.enterprise.event.ObservesAsync;
 
@@ -15,7 +16,7 @@
 public class AuditEventReciever4 {
 
     // Order: Doesn't fire
-    public void receive(@ObservesAsync AuditEvent auditEvent) {
+    public void receive(@ObservesAsync @Priority(1) AuditEvent auditEvent) {
                 System.out.println("Priority: no (ObservesAsync) " +
                 auditEvent.getPriority() + " " + auditEvent.getMessage());
     }
diff --git a/CDI-2-0/src/main/java/com/readlearncode/priority/ObserverEvent.java b/CDI-2-0/src/main/java/com/readlearncode/priority/ObserverEvent.java
@@ -0,0 +1,34 @@
+package com.readlearncode.priority;
+
+/**
+ * Source code github.com/readlearncode
+ *
+ * @author Alex Theedom www.readlearncode.com
+ * @version 1.0
+ */
+public class ObserverEvent {
+
+    /*
+    The CDI 2.0 API introduces the @Priority annotation that allows
+    the order of observer methods.
+
+    When the fire method is called in what order are the observer
+    methods executed.
+     */
+    
+
+//    // Order: 2nd
+//    public void observe1(@Observes @Priority(1000) AuditEvent auditEvent) {}
+//
+//    // Order: 1st
+//    public void observe2(@Observes @Priority(100) AuditEvent auditEvent) {}
+//
+//    // Order: 3rd
+//    public void observe3(@Observes @Priority(APPLICATION + 500) AuditEvent auditEvent) {}
+//
+//    // Order: Doesn't fire
+//    public void observe4(@ObservesAsync  @Priority(1) AuditEvent auditEvent) {}
+//
+//    // Order: 4th
+//    public void observe5(@Observes @Priority(5000) AuditEvent auditEvent) {}
+}
