1 files changed, 127 insertions, 0 deletions
diff --git a/qpid/java/broker/src/main/java/org/apache/qpid/server/queue/TransientMessageData.java b/qpid/java/broker/src/main/java/org/apache/qpid/server/queue/TransientMessageData.java
new file mode 100644
index 0000000000..9b91c71a1d
--- /dev/null
+++ b/qpid/java/broker/src/main/java/org/apache/qpid/server/queue/TransientMessageData.java
@@ -0,0 +1,127 @@
+/*
+ *
+ * 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.queue;
+
+import java.util.LinkedList;
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Collections;
+
+import org.apache.qpid.AMQException;
+import org.apache.qpid.framing.abstraction.MessagePublishInfo;
+import org.apache.qpid.framing.BasicContentHeaderProperties;
+import org.apache.qpid.framing.ContentHeaderBody;
+
+/**
+ * Contains data that is only used in AMQMessage transiently, e.g. while the content
+ * body fragments are arriving.
+ *
+ * Having this data stored in a separate class means that the AMQMessage class avoids
+ * the small overhead of numerous guaranteed-null references.
+ *
+ * @author Apache Software Foundation
+ */
+public class TransientMessageData
+{
+    /**
+     * Stored temporarily until the header has been received at which point it is used when
+     * constructing the handle
+     */
+    private MessagePublishInfo _messagePublishInfo;
+
+    /**
+     * Also stored temporarily.
+     */
+    private ContentHeaderBody _contentHeaderBody;
+
+    /**
+     * Keeps a track of how many bytes we have received in body frames
+     */
+    private long _bodyLengthReceived = 0;
+
+    /**
+     * This is stored during routing, to know the queues to which this message should immediately be
+     * delivered. It is <b>cleared after delivery has been attempted</b>. Any persistent record of destinations is done
+     * by the message handle.
+     */
+    private List<AMQQueue> _destinationQueues;
+
+    public MessagePublishInfo getMessagePublishInfo()
+    {
+        return _messagePublishInfo;
+    }
+
+    public void setMessagePublishInfo(MessagePublishInfo messagePublishInfo)
+    {
+        _messagePublishInfo = messagePublishInfo;
+    }
+
+    public List<AMQQueue> getDestinationQueues()
+    {
+        return _destinationQueues == null ? (List<AMQQueue>) Collections.EMPTY_LIST : _destinationQueues;
+    }
+
+    public void setDestinationQueues(List<AMQQueue> destinationQueues)
+    {
+        _destinationQueues = destinationQueues;
+    }
+
+    public ContentHeaderBody getContentHeaderBody()
+    {
+        return _contentHeaderBody;
+    }
+
+    public void setContentHeaderBody(ContentHeaderBody contentHeaderBody)
+    {
+        _contentHeaderBody = contentHeaderBody;
+    }
+
+    public long getBodyLengthReceived()
+    {
+        return _bodyLengthReceived;
+    }
+
+    public void addBodyLength(int value)
+    {
+        _bodyLengthReceived += value;
+    }
+
+    public boolean isAllContentReceived() throws AMQException
+    {
+        return _bodyLengthReceived == _contentHeaderBody.bodySize;
+    }
+
+    public void addDestinationQueue(AMQQueue queue)
+    {
+        if(_destinationQueues == null)
+        {
+            _destinationQueues = new ArrayList<AMQQueue>();
+        }
+        _destinationQueues.add(queue);
+    }
+
+    public boolean isPersistent()
+    {
+        //todo remove literal values to a constant file such as AMQConstants in common
+        return _contentHeaderBody.properties instanceof BasicContentHeaderProperties &&
+             ((BasicContentHeaderProperties) _contentHeaderBody.properties).getDeliveryMode() == 2;
+    }
+}