added more convenient constructor for saving typing

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@35364 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/diagnosis/OldDataMonitor.java

@@ -113,7 +113,7 @@ public class OldDataMonitor extends AdministrativeMonitor {
     };
 
     @Extension
-    public static final RunListener<Run> runDeleteListener = new RunListener<Run>(Run.class) {
+    public static final RunListener<Run> runDeleteListener = new RunListener<Run>() {
         @Override
         public void onDeleted(Run run) {
             remove(run, true);

core/src/main/java/hudson/model/listeners/RunListener.java

@@ -31,6 +31,10 @@ import hudson.model.Run;
 import hudson.model.TaskListener;
 import hudson.model.Hudson;
 import hudson.util.CopyOnWriteList;
+import org.jvnet.tiger_types.Types;
+
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
 
 /**
  * Receives notifications about builds.
@@ -52,6 +56,14 @@ public abstract class RunListener<R extends Run> implements ExtensionPoint {
         this.targetType = targetType;
     }
 
+    protected RunListener() {
+        Type type = Types.getBaseClass(getClass(), RunListener.class);
+        if (type instanceof ParameterizedType)
+            targetType = Types.erasure(Types.getTypeArgument(type,0));
+        else
+            throw new IllegalStateException(getClass()+" uses the raw type for extending RunListener");
+    }
+
     /**
      * Called after a build is completed.
      *

core/src/main/java/hudson/tasks/test/AggregatedTestResultPublisher.java

@@ -272,10 +272,6 @@ public class AggregatedTestResultPublisher extends Recorder {
 
         @Extension
         public static class RunListenerImpl extends RunListener<Run> {
-            public RunListenerImpl() {
-                super(Run.class);
-            }
-
             @Override
             public void onCompleted(Run run, TaskListener listener) {
                 lastChanged = System.currentTimeMillis();