1 files changed, 56 insertions, 0 deletions
diff --git a/java/java/cluster/src/org/apache/qpid/server/cluster/handler/WrappedListener.java b/java/java/cluster/src/org/apache/qpid/server/cluster/handler/WrappedListener.java
new file mode 100644
index 0000000000..d46913d042
--- /dev/null
+++ b/java/java/cluster/src/org/apache/qpid/server/cluster/handler/WrappedListener.java
@@ -0,0 +1,56 @@
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+package org.apache.qpid.server.cluster.handler;
+
+import org.apache.qpid.AMQException;
+import org.apache.qpid.framing.AMQMethodBody;
+import org.apache.qpid.server.exchange.ExchangeRegistry;
+import org.apache.qpid.server.protocol.AMQMethodEvent;
+import org.apache.qpid.server.protocol.AMQProtocolSession;
+import org.apache.qpid.server.queue.QueueRegistry;
+import org.apache.qpid.server.state.AMQStateManager;
+import org.apache.qpid.server.state.StateAwareMethodListener;
+
+public class WrappedListener<T extends AMQMethodBody> implements StateAwareMethodListener<T>
+{
+    private final StateAwareMethodListener<T> _primary;
+    private final StateAwareMethodListener _post;
+    private final StateAwareMethodListener _pre;
+
+    WrappedListener(StateAwareMethodListener<T> primary, StateAwareMethodListener  pre, StateAwareMethodListener post)
+    {
+        _pre = check(pre);
+        _post = check(post);
+        _primary = check(primary);
+    }
+
+    public void methodReceived(AMQStateManager stateMgr, QueueRegistry queues, ExchangeRegistry exchanges, AMQProtocolSession session, AMQMethodEvent<T> evt) throws AMQException
+    {
+        _pre.methodReceived(stateMgr, queues, exchanges, session, evt);
+        _primary.methodReceived(stateMgr, queues, exchanges, session, evt);
+        _post.methodReceived(stateMgr, queues, exchanges, session, evt);
+    }
+
+    private static <T extends AMQMethodBody> StateAwareMethodListener<T> check(StateAwareMethodListener<T> in)
+    {
+        return in == null ? new NullListener<T>() : in;
+    }
+}