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diff --git a/qpid/cpp/include/qpid/messaging/Handle.h b/qpid/cpp/include/qpid/messaging/Handle.h
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+#ifndef QPID_MESSAGING_HANDLE_H
+#define QPID_MESSAGING_HANDLE_H
+
+/*
+ *
+ * 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.
+ *
+ */
+
+#include "qpid/messaging/ImportExport.h"
+
+namespace qpid {
+namespace messaging {
+
+template <class> class PrivateImplRef;
+
+/** \ingroup messaging
+ * A handle is like a pointer: refers to an underlying implementation object.
+ * Copying the handle does not copy the object.
+ *
+ * Handles can be null, like a 0 pointer. Use isValid(), isNull() or the
+ * conversion to bool to test for a null handle.
+ */
+template <class T> class Handle {
+ public:
+
+ /**@return true if handle is valid, i.e. not null. */
+ QPID_MESSAGING_INLINE_EXTERN bool isValid() const { return impl; }
+
+ /**@return true if handle is null. It is an error to call any function on a null handle. */
+ QPID_MESSAGING_INLINE_EXTERN bool isNull() const { return !impl; }
+
+ /** Conversion to bool supports idiom if (handle) { handle->... } */
+ QPID_MESSAGING_INLINE_EXTERN operator bool() const { return impl; }
+
+ /** Operator ! supports idiom if (!handle) { do_if_handle_is_null(); } */
+ QPID_MESSAGING_INLINE_EXTERN bool operator !() const { return !impl; }
+
+ void swap(Handle<T>& h) { T* t = h.impl; h.impl = impl; impl = t; }
+
+ protected:
+ typedef T Impl;
+ QPID_MESSAGING_INLINE_EXTERN Handle() :impl() {}
+
+ // Not implemented,subclasses must implement.
+ QPID_MESSAGING_EXTERN Handle(const Handle&);
+ QPID_MESSAGING_EXTERN Handle& operator=(const Handle&);
+
+ Impl* impl;
+
+ friend class PrivateImplRef<T>;
+};
+
+}} // namespace qpid::messaging
+
+#endif /*!QPID_MESSAGING_HANDLE_H*/