QPID-3346: move message group feature into trunk.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1180050 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 58 insertions, 0 deletions

diff --git a/cpp/src/qpid/broker/FifoDistributor.cpp b/cpp/src/qpid/broker/FifoDistributor.cpp
new file mode 100644
index 0000000000..cdb32d8c8c
--- /dev/null
+++ b/cpp/src/qpid/broker/FifoDistributor.cpp
@@ -0,0 +1,58 @@
+/*
+ *
+ * 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"
+#include "qpid/broker/FifoDistributor.h"
+
+using namespace qpid::broker;
+
+FifoDistributor::FifoDistributor(Messages& container)
+    : messages(container) {}
+
+bool FifoDistributor::nextConsumableMessage( Consumer::shared_ptr&, QueuedMessage& next )
+{
+    if (!messages.empty()) {
+        next = messages.front();    // by default, consume oldest msg
+        return true;
+    }
+    return false;
+}
+
+bool FifoDistributor::allocate(const std::string&, const QueuedMessage& )
+{
+    // by default, all messages present on the queue may be allocated as they have yet to
+    // be acquired.
+    return true;
+}
+
+bool FifoDistributor::nextBrowsableMessage( Consumer::shared_ptr& c, QueuedMessage& next )
+{
+    if (!messages.empty() && messages.next(c->position, next))
+        return true;
+    return false;
+}
+
+void FifoDistributor::query(qpid::types::Variant::Map&) const
+{
+    // nothing to see here....
+}
+