1 files changed, 173 insertions, 0 deletions
diff --git a/qpid/java/client/src/main/java/org/apache/qpid/client/message/MessageFactoryRegistry.java b/qpid/java/client/src/main/java/org/apache/qpid/client/message/MessageFactoryRegistry.java
new file mode 100644
index 0000000000..cdb75fc9a9
--- /dev/null
+++ b/qpid/java/client/src/main/java/org/apache/qpid/client/message/MessageFactoryRegistry.java
@@ -0,0 +1,173 @@
+/*
+ *
+ * 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.client.message;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.nio.ByteBuffer;
+
+import javax.jms.JMSException;
+
+import org.apache.qpid.AMQException;
+import org.apache.qpid.framing.AMQShortString;
+import org.apache.qpid.framing.BasicContentHeaderProperties;
+import org.apache.qpid.framing.ContentHeaderBody;
+import org.apache.qpid.transport.Struct;
+import org.apache.qpid.transport.MessageProperties;
+import org.apache.qpid.transport.MessageTransfer;
+import org.apache.qpid.transport.DeliveryProperties;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class MessageFactoryRegistry
+{
+    /**
+     * This class logger
+     */
+    protected final Logger _logger = LoggerFactory.getLogger(getClass());
+
+    private final Map<String, MessageFactory> _mimeStringToFactoryMap = new HashMap<String, MessageFactory>();
+    private final Map<AMQShortString, MessageFactory> _mimeShortStringToFactoryMap =
+            new HashMap<AMQShortString, MessageFactory>();
+    private final MessageFactory _default = new JMSBytesMessageFactory();
+
+    /**
+     * Construct a new registry with the default message factories registered
+     *
+     * @return a message factory registry
+     */
+    public static MessageFactoryRegistry newDefaultRegistry()
+    {
+        MessageFactoryRegistry mf = new MessageFactoryRegistry();
+        mf.registerFactory(JMSMapMessage.MIME_TYPE, new JMSMapMessageFactory());
+        mf.registerFactory("text/plain", new JMSTextMessageFactory());
+        mf.registerFactory("text/xml", new JMSTextMessageFactory());
+        mf.registerFactory(JMSBytesMessage.MIME_TYPE, new JMSBytesMessageFactory());
+        mf.registerFactory(JMSObjectMessage.MIME_TYPE, new JMSObjectMessageFactory());
+        mf.registerFactory(JMSStreamMessage.MIME_TYPE, new JMSStreamMessageFactory());
+        mf.registerFactory(AMQPEncodedMapMessage.MIME_TYPE, new AMQPEncodedMapMessageFactory());
+        mf.registerFactory(null, mf._default);
+
+        return mf;
+    }
+
+
+    public void registerFactory(String mimeType, MessageFactory mf)
+    {
+        if (mf == null)
+        {
+            throw new IllegalArgumentException("Message factory must not be null");
+        }
+
+        _mimeStringToFactoryMap.put(mimeType, mf);
+        _mimeShortStringToFactoryMap.put(new AMQShortString(mimeType), mf);
+    }
+
+    public MessageFactory deregisterFactory(String mimeType)
+    {
+        _mimeShortStringToFactoryMap.remove(new AMQShortString(mimeType));
+
+        return _mimeStringToFactoryMap.remove(mimeType);
+    }
+
+    /**
+     * Create a message. This looks up the MIME type from the content header and instantiates the appropriate
+     * concrete message type.
+     *
+     * @param deliveryTag   the AMQ message id
+     * @param redelivered   true if redelivered
+     * @param contentHeader the content header that was received
+     * @param bodies        a list of ContentBody instances @return the message.
+     * @throws AMQException
+     * @throws JMSException
+     */
+    public AbstractJMSMessage createMessage(long deliveryTag, boolean redelivered, AMQShortString exchange,
+                                            AMQShortString routingKey, ContentHeaderBody contentHeader, List bodies)
+            throws AMQException, JMSException
+    {
+        BasicContentHeaderProperties properties = (BasicContentHeaderProperties) contentHeader.getProperties();
+
+        // Get the message content type. This may be null for pure AMQP messages, but will always be set for JMS over
+        // AMQP. When the type is null, it can only be assumed that the message is a byte message.
+        AMQShortString contentTypeShortString = properties.getContentType();
+        contentTypeShortString = (contentTypeShortString == null) ? new AMQShortString(
+                JMSBytesMessage.MIME_TYPE) : contentTypeShortString;
+
+        MessageFactory mf = _mimeShortStringToFactoryMap.get(contentTypeShortString);
+        if (mf == null)
+        {
+            mf = _default;
+        }
+
+        return mf.createMessage(deliveryTag, redelivered, contentHeader, exchange, routingKey, bodies);
+    }
+
+    public AbstractJMSMessage createMessage(MessageTransfer transfer) throws AMQException, JMSException
+    {
+
+        MessageProperties mprop = transfer.getHeader().get(MessageProperties.class);
+        String messageType = "";
+        if ( mprop == null || mprop.getContentType() == null)
+        {
+            _logger.debug("no message type specified, building a byte message");
+            messageType = JMSBytesMessage.MIME_TYPE;
+        }
+        else
+        {
+           messageType = mprop.getContentType();
+        }
+        MessageFactory mf = _mimeStringToFactoryMap.get(messageType);
+        if (mf == null)
+        {
+            mf = _default;
+        }
+
+        boolean redelivered = false;
+        DeliveryProperties deliverProps;
+        if((deliverProps = transfer.getHeader().get(DeliveryProperties.class)) != null)
+        {
+            redelivered = deliverProps.getRedelivered();
+        }
+        return mf.createMessage(transfer.getId(),
+                                redelivered,
+                                mprop == null? new MessageProperties():mprop,
+                                deliverProps == null? new DeliveryProperties():deliverProps,
+                                transfer.getBody());
+    }
+
+
+    public AbstractJMSMessage createMessage(AMQMessageDelegateFactory delegateFactory, String mimeType) throws AMQException, JMSException
+    {
+        if (mimeType == null)
+        {
+            throw new IllegalArgumentException("Mime type must not be null");
+        }
+
+        MessageFactory mf = _mimeStringToFactoryMap.get(mimeType);
+        if (mf == null)
+        {
+            mf = _default;
+        }
+
+        return mf.createMessage(delegateFactory);
+    }
+}