332907 (work in progress) Added AbstractHandlerContainer.findContainerOf

git-svn-id: svn+ssh://dev.eclipse.org/svnroot/rt/org.eclipse.jetty/jetty/trunk@3105 7e9141cc-0065-0410-87d8-b60c137991c4

VERSION.txt

@@ -1,4 +1,5 @@
 jetty-7.4.1-SNAPSHOT
+ + 332907 (work in progress) Added AbstractHandlerContainer.findContainerOf
  + 340040 Support for a total timeout
  + 343083 Set nested dispatch type and connection
  + 343172 Check package implementor for version

jetty-server/src/main/java/org/eclipse/jetty/server/handler/AbstractHandlerContainer.java

@@ -84,7 +84,28 @@ public abstract class AbstractHandlerContainer extends AbstractHandler implement
         
         return list;
     }
-
+    
+    /* ------------------------------------------------------------ */
+    public static <T extends HandlerContainer> T findContainerOf(HandlerContainer root,Class<T>type, Handler handler)
+    {
+        Handler[] branches=root.getChildHandlersByClass(type);
+        if (branches!=null)
+        {
+            for (Handler h:branches)
+            {
+                T container = (T)h;
+                Handler[] candidates = container.getChildHandlersByClass(handler.getClass());
+                if (candidates!=null)
+                {
+                    for (Handler c:candidates)
+                        if (c==handler)
+                            return container;
+                }
+            }
+        }
+        return null;
+    }
+    
     /* ------------------------------------------------------------ */
     public void dump(Appendable out,String indent) throws IOException
     {

jetty-server/src/test/java/org/eclipse/jetty/server/handler/ContextHandlerCollectionTest.java

@@ -15,6 +15,7 @@ package org.eclipse.jetty.server.handler;
 
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertEquals;
 
 import java.io.IOException;
 
@@ -153,6 +154,46 @@ public class ContextHandlerCollectionTest
 
     }
 
+
+    @Test
+    public void testFindContainer() throws Exception
+    {
+        Server server = new Server();
+
+        ContextHandler contextA = new ContextHandler("/a");
+        IsHandledHandler handlerA = new IsHandledHandler();
+        contextA.setHandler(handlerA);
+
+        ContextHandler contextB = new ContextHandler("/b");
+        IsHandledHandler handlerB = new IsHandledHandler();
+        HandlerWrapper wrapperB = new HandlerWrapper();
+        wrapperB.setHandler(handlerB);
+        contextB.setHandler(wrapperB);
+
+        ContextHandler contextC = new ContextHandler("/c");
+        IsHandledHandler handlerC = new IsHandledHandler();
+        contextC.setHandler(handlerC);
+
+        ContextHandlerCollection collection = new ContextHandlerCollection();
+
+        collection.addHandler(contextA);
+        collection.addHandler(contextB);
+        collection.addHandler(contextC);
+
+        HandlerWrapper wrapper = new HandlerWrapper();
+        wrapper.setHandler(collection);
+        server.setHandler(wrapper);
+        
+        assertEquals(wrapper,AbstractHandlerContainer.findContainerOf(server,HandlerWrapper.class,handlerA));
+        assertEquals(contextA,AbstractHandlerContainer.findContainerOf(server,ContextHandler.class,handlerA));
+        assertEquals(contextB,AbstractHandlerContainer.findContainerOf(server,ContextHandler.class,handlerB));
+        assertEquals(wrapper,AbstractHandlerContainer.findContainerOf(server,HandlerWrapper.class,handlerB));
+        assertEquals(contextB,AbstractHandlerContainer.findContainerOf(collection,HandlerWrapper.class,handlerB));
+        assertEquals(wrapperB,AbstractHandlerContainer.findContainerOf(contextB,HandlerWrapper.class,handlerB));
+        
+    }
+
+    
     private static final class IsHandledHandler extends AbstractHandler
     {
         private boolean handled;
@@ -173,4 +214,7 @@ public class ContextHandlerCollectionTest
             handled = false;
         }
     }
+
+
+
 }