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-rw-r--r--M4-RCs/qpid/java/broker/src/main/java/org/apache/qpid/server/txn/TxnBuffer.java109
1 files changed, 0 insertions, 109 deletions
diff --git a/M4-RCs/qpid/java/broker/src/main/java/org/apache/qpid/server/txn/TxnBuffer.java b/M4-RCs/qpid/java/broker/src/main/java/org/apache/qpid/server/txn/TxnBuffer.java
deleted file mode 100644
index 46a68b6a23..0000000000
--- a/M4-RCs/qpid/java/broker/src/main/java/org/apache/qpid/server/txn/TxnBuffer.java
+++ /dev/null
@@ -1,109 +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.
- *
- */
-package org.apache.qpid.server.txn;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.apache.log4j.Logger;
-import org.apache.qpid.AMQException;
-import org.apache.qpid.server.store.StoreContext;
-
-/** Holds a list of TxnOp instance representing transactional operations. */
-public class TxnBuffer
-{
- private final List<TxnOp> _ops = new ArrayList<TxnOp>();
- private static final Logger _log = Logger.getLogger(TxnBuffer.class);
-
- public TxnBuffer()
- {
- }
-
- public void commit(StoreContext context) throws AMQException
- {
- if (_log.isDebugEnabled())
- {
- _log.debug("Committing " + _ops.size() + " ops to commit.:" + _ops);
- }
-
- if (prepare(context))
- {
- for (TxnOp op : _ops)
- {
- op.commit(context);
- }
- }
- _ops.clear();
- }
-
- private boolean prepare(StoreContext context) throws AMQException
- {
- for (int i = 0; i < _ops.size(); i++)
- {
- TxnOp op = _ops.get(i);
- try
- {
- op.prepare(context);
- }
- catch (AMQException e)
- {
- undoPrepare(i);
- throw e;
- }
- catch (RuntimeException e)
- {
- undoPrepare(i);
- throw e;
- }
- }
- return true;
- }
-
- private void undoPrepare(int lastPrepared)
- {
- //compensate previously prepared ops
- for (int j = 0; j < lastPrepared; j++)
- {
- _ops.get(j).undoPrepare();
- }
- }
-
-
-
- public void rollback(StoreContext context) throws AMQException
- {
- for (TxnOp op : _ops)
- {
- op.rollback(context);
- }
- _ops.clear();
- }
-
- public void enlist(TxnOp op)
- {
- _ops.add(op);
- }
-
- public void cancel(TxnOp op)
- {
- _ops.remove(op);
- }
-}