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diff --git a/cpp/src/qpid/broker/HandlerImpl.h b/cpp/src/qpid/broker/HandlerImpl.h
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+++ b/cpp/src/qpid/broker/HandlerImpl.h
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+#ifndef _broker_HandlerImpl_h
+#define _broker_HandlerImpl_h
+
+/*
+ *
+ * Copyright (c) 2006 The Apache Software Foundation
+ *
+ * Licensed 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.
+ *
+ */
+
+#include "BrokerChannel.h"
+#include "qpid/framing/AMQP_ClientProxy.h"
+
+namespace qpid {
+
+namespace framing {
+class AMQP_ClientProxy;
+}
+
+namespace broker {
+
+class Broker;
+class Channel;
+class Connection;
+
+/**
+ * A collection of references to the core objects required by an adapter,
+ * and a client proxy.
+ */
+struct CoreRefs
+{
+    CoreRefs(Channel& ch, Connection& c, Broker& b)
+        : channel(ch), connection(c), broker(b), proxy(ch) {}
+
+    Channel& channel;
+    Connection& connection;
+    Broker& broker;
+    framing::AMQP_ClientProxy proxy;
+};
+
+
+/**
+ * Base template for protocol handler implementations.
+ * Provides the core references and appropriate AMQP class proxy.
+ */
+template <class ProxyType>
+struct HandlerImpl : public CoreRefs {
+    typedef HandlerImpl<ProxyType> HandlerImplType;
+    HandlerImpl(CoreRefs& parent)
+        : CoreRefs(parent), client(ProxyType::get(proxy)) {}
+    ProxyType client;
+};
+
+
+
+}} // namespace qpid::broker
+
+
+
+#endif  /*!_broker_HandlerImpl_h*/