1 files changed, 101 insertions, 0 deletions
diff --git a/cpp/src/qpid/broker/AsyncStoreToken.h b/cpp/src/qpid/broker/AsyncStoreToken.h
new file mode 100644
index 0000000000..14659c56e6
--- /dev/null
+++ b/cpp/src/qpid/broker/AsyncStoreToken.h
@@ -0,0 +1,101 @@
+/*
+ * 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.
+ */
+
+#ifndef qpid_broker_AsyncStoreToken_h_
+#define qpid_broker_AsyncStoreToken_h_
+
+#include "qpid/RefCounted.h"
+#include <stdint.h> // uint64_t
+
+namespace qpid {
+namespace broker {
+
+/**
+ * Pointer to data to be persisted.
+ */
+class StoredData : public qpid::RefCounted
+{
+public:
+    virtual ~StoredData() {}
+    virtual uint64_t getSize() = 0;
+    virtual void write(char*) = 0;
+};
+
+/**
+ * Token classes, to be implemented by store:
+ * <pre>
+ *
+ *                 +---------------+
+ *                 | IdentityToken |
+ *                 +---------------+
+ *                         ^
+ *                         |
+ *         +---------------+--------------+
+ *         |               |              |
+ *  +------------+  +-------------+  +----------+
+ *  | EventToken |  | ConfigToken |  | TxnToken |
+ *  +------------+  +-------------+  +----------+
+ *         ^               ^
+ *         |               |
+ * +--------------+  +------------+
+ * | MessageToken |  | QueueToken |
+ * +--------------+  +------------+
+ *
+ * </pre>
+ */
+
+class IdentityToken : public qpid::RefCounted
+{
+public :
+    virtual ~IdentityToken() {}
+};
+
+class EventToken : public IdentityToken
+{
+public :
+    virtual ~EventToken() {}
+};
+
+class MessageToken : public EventToken
+{
+public :
+    virtual ~MessageToken() {}
+};
+
+class ConfigToken : public IdentityToken
+{
+public :
+    virtual ~ConfigToken() {}
+};
+
+class QueueToken : public ConfigToken
+{
+public :
+    virtual ~QueueToken() {}
+};
+
+class TxnToken : public IdentityToken
+{
+public :
+    virtual ~TxnToken() {}
+};
+
+}} // namespace qpid::broker
+
+#endif // qpid_broker_AsyncStoreToken_h_