001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.activemq.transport.amqp.message;
018
019import java.io.Serializable;
020import java.util.List;
021import java.util.Map;
022import java.util.Set;
023
024import javax.jms.BytesMessage;
025import javax.jms.MapMessage;
026import javax.jms.Message;
027import javax.jms.ObjectMessage;
028import javax.jms.StreamMessage;
029import javax.jms.TextMessage;
030
031import org.apache.qpid.proton.amqp.Binary;
032import org.apache.qpid.proton.amqp.messaging.AmqpSequence;
033import org.apache.qpid.proton.amqp.messaging.AmqpValue;
034import org.apache.qpid.proton.amqp.messaging.Data;
035import org.apache.qpid.proton.amqp.messaging.Section;
036
037public class JMSMappingInboundTransformer extends InboundTransformer {
038
039    public JMSMappingInboundTransformer(JMSVendor vendor) {
040        super(vendor);
041    }
042
043    @Override
044    public String getTransformerName() {
045        return TRANSFORMER_JMS;
046    }
047
048    @Override
049    public InboundTransformer getFallbackTransformer() {
050        return new AMQPNativeInboundTransformer(getVendor());
051    }
052
053    @SuppressWarnings({ "unchecked" })
054    @Override
055    public Message transform(EncodedMessage amqpMessage) throws Exception {
056        org.apache.qpid.proton.message.Message amqp = amqpMessage.decode();
057
058        Message rc;
059        final Section body = amqp.getBody();
060        if (body == null) {
061            rc = vendor.createMessage();
062        } else if (body instanceof Data) {
063            Binary d = ((Data) body).getValue();
064            BytesMessage m = vendor.createBytesMessage();
065            m.writeBytes(d.getArray(), d.getArrayOffset(), d.getLength());
066            rc = m;
067        } else if (body instanceof AmqpSequence) {
068            AmqpSequence sequence = (AmqpSequence) body;
069            StreamMessage m = vendor.createStreamMessage();
070            for (Object item : sequence.getValue()) {
071                m.writeObject(item);
072            }
073            rc = m;
074        } else if (body instanceof AmqpValue) {
075            Object value = ((AmqpValue) body).getValue();
076            if (value == null) {
077                rc = vendor.createObjectMessage();
078            }
079            if (value instanceof String) {
080                TextMessage m = vendor.createTextMessage();
081                m.setText((String) value);
082                rc = m;
083            } else if (value instanceof Binary) {
084                Binary d = (Binary) value;
085                BytesMessage m = vendor.createBytesMessage();
086                m.writeBytes(d.getArray(), d.getArrayOffset(), d.getLength());
087                rc = m;
088            } else if (value instanceof List) {
089                StreamMessage m = vendor.createStreamMessage();
090                for (Object item : (List<Object>) value) {
091                    m.writeObject(item);
092                }
093                rc = m;
094            } else if (value instanceof Map) {
095                MapMessage m = vendor.createMapMessage();
096                final Set<Map.Entry<String, Object>> set = ((Map<String, Object>) value).entrySet();
097                for (Map.Entry<String, Object> entry : set) {
098                    m.setObject(entry.getKey(), entry.getValue());
099                }
100                rc = m;
101            } else {
102                ObjectMessage m = vendor.createObjectMessage();
103                m.setObject((Serializable) value);
104                rc = m;
105            }
106        } else {
107            throw new RuntimeException("Unexpected body type: " + body.getClass());
108        }
109        rc.setJMSDeliveryMode(defaultDeliveryMode);
110        rc.setJMSPriority(defaultPriority);
111        rc.setJMSExpiration(defaultTtl);
112
113        populateMessage(rc, amqp);
114
115        rc.setLongProperty(prefixVendor + "MESSAGE_FORMAT", amqpMessage.getMessageFormat());
116        rc.setBooleanProperty(prefixVendor + "NATIVE", false);
117        return rc;
118    }
119}