1 files changed, 80 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/broker/TxBuffer.cpp b/qpid/cpp/src/qpid/broker/TxBuffer.cpp
new file mode 100644
index 0000000000..b509778e89
--- /dev/null
+++ b/qpid/cpp/src/qpid/broker/TxBuffer.cpp
@@ -0,0 +1,80 @@
+/*
+ *
+ * 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/TxBuffer.h"
+#include "qpid/log/Statement.h"
+
+#include <boost/mem_fn.hpp>
+#include <boost/bind.hpp>
+using boost::mem_fn;
+using namespace qpid::broker;
+
+bool TxBuffer::prepare(TransactionContext* const ctxt)
+{
+    for(op_iterator i = ops.begin(); i < ops.end(); i++){
+        if(!(*i)->prepare(ctxt)){
+            return false;
+        }
+    }
+    return true;
+}
+
+void TxBuffer::commit()
+{
+    std::for_each(ops.begin(), ops.end(), mem_fn(&TxOp::commit));
+    ops.clear();
+}
+
+void TxBuffer::rollback()
+{
+    std::for_each(ops.begin(), ops.end(), mem_fn(&TxOp::rollback));
+    ops.clear();
+}
+
+void TxBuffer::enlist(TxOp::shared_ptr op)
+{
+    ops.push_back(op);
+}
+
+bool TxBuffer::commitLocal(TransactionalStore* const store)
+{
+    if (!store) return false;
+    try {
+        std::auto_ptr<TransactionContext> ctxt = store->begin();
+        if (prepare(ctxt.get())) {
+            store->commit(*ctxt);
+            commit();
+            return true;
+        } else {
+            store->abort(*ctxt);
+            rollback();
+            return false;
+        }
+    } catch (std::exception& e) {
+        QPID_LOG(error, "Commit failed with exception: " << e.what());
+    } catch (...) {
+        QPID_LOG(error, "Commit failed with unknown exception");
+    }
+    return false;
+}
+
+void TxBuffer::accept(TxOpConstVisitor& v) const {
+    std::for_each(ops.begin(), ops.end(), boost::bind(&TxOp::accept, _1, boost::ref(v))); 
+}