1 files changed, 45 insertions, 0 deletions
diff --git a/cpp/src/qpid/broker/Lvq.h b/cpp/src/qpid/broker/Lvq.h
new file mode 100644
index 0000000000..335270a073
--- /dev/null
+++ b/cpp/src/qpid/broker/Lvq.h
@@ -0,0 +1,45 @@
+#ifndef QPID_BROKER_LVQ_H
+#define QPID_BROKER_LVQ_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/broker/Queue.h"
+
+namespace qpid {
+namespace broker {
+class MessageMap;
+
+/**
+ * Subclass of queue that handles last-value-queue semantics in
+ * conjunction with the MessageMap class. This requires an existing
+ * message to be 'replaced' by a newer message with the same key.
+ */
+class Lvq : public Queue
+{
+  public:
+    Lvq(const std::string&, std::auto_ptr<MessageMap>, const QueueSettings&, MessageStore* const, management::Manageable*, Broker*);
+    void push(Message& msg, bool isRecovery=false);
+  private:
+    MessageMap& messageMap;
+};
+}} // namespace qpid::broker
+
+#endif  /*!QPID_BROKER_LVQ_H*/