backing up the previous tag

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/tags/M2@596673 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 0 insertions, 107 deletions

diff --git a/Final/cpp/lib/broker/TxBuffer.h b/Final/cpp/lib/broker/TxBuffer.h
deleted file mode 100644
index 2d9a2a3679..0000000000
--- a/Final/cpp/lib/broker/TxBuffer.h
+++ /dev/null
@@ -1,107 +0,0 @@
-/*
- *
- * 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 _TxBuffer_
-#define _TxBuffer_
-
-#include <algorithm>
-#include <functional>
-#include <vector>
-#include <TransactionalStore.h>
-#include <TxOp.h>
-
-/**
- * Represents a single transaction. As such, an instance of this class
- * will hold a list of operations representing the workload of the
- * transaction. This work can be committed or rolled back. Committing
- * is a two-stage process: first all the operations should be
- * prepared, then if that succeeds they can be committed.
- * 
- * In the 2pc case, a successful prepare may be followed by either a
- * commit or a rollback.
- * 
- * Atomicity of prepare is ensured by using a lower level
- * transactional facility. This saves explicitly rolling back all the
- * successfully prepared ops when one of them fails. i.e. we do not
- * use 2pc internally, we instead ensure that prepare is atomic at a
- * lower level. This makes individual prepare operations easier to
- * code.
- * 
- * Transactions on a messaging broker effect three types of 'action':
- * (1) updates to persistent storage (2) updates to transient storage
- * or cached data (3) network writes.
- * 
- * Of these, (1) should always occur atomically during prepare to
- * ensure that if the broker crashes while a transaction is being
- * completed the persistent state (which is all that then remains) is
- * consistent. (3) can only be done on commit, after a successful
- * prepare. There is a little more flexibility with (2) but any
- * changes made during prepare should be subject to the control of the
- * TransactionalStore in use.
- */
-namespace qpid {
-    namespace broker {
-        class TxBuffer{
-            typedef std::vector<TxOp*>::iterator op_iterator;
-            std::vector<TxOp*> ops;
-        public:
-            /**
-             * Requests that all ops are prepared. This should
-             * primarily involve making sure that a persistent record
-             * of the operations is stored where necessary.
-             * 
-             * All ops will be prepared under a transaction on the
-             * specified store. If any operation fails on prepare,
-             * this transaction will be rolled back. 
-             * 
-             * Once prepared, a transaction can be committed (or in
-             * the 2pc case, rolled back).
-             * 
-             * @returns true if all the operations prepared
-             * successfully, false if not.
-             */
-            bool prepare(TransactionalStore* const store);
-            /**
-             * Signals that the ops all prepared all completed
-             * successfully and can now commit, i.e. the operation can
-             * now be fully carried out.
-             * 
-             * Should only be called after a call to prepare() returns
-             * true.
-             */
-            void commit();
-            /**
-             * Rolls back all the operations.
-             * 
-             * Should only be called either after a call to prepare()
-             * returns true (2pc) or instead of a prepare call
-             * ('server-local')
-             */
-            void rollback();
-            /**
-             * Adds an operation to the transaction.
-             */
-            void enlist(TxOp* const op);
-        };
-    }
-}
-
-
-#endif