Examples of org.apache.activemq.command.ActiveMQBytesMessage

org.apache.activemq.command.ActiveMQBytesMessage
A BytesMessage object is used to send a message containing a stream of uninterpreted bytes. It inherits from the Message interface and adds a bytes message body. The receiver of the message supplies the interpretation of the bytes.
The BytesMessage methods are based largely on those found in java.io.DataInputStream and java.io.DataOutputStream.
This message type is for client encoding of existing message formats. If possible, one of the other self-defining message types should be used instead.
Although the JMS API allows the use of message properties with byte messages, they are typically not used, since the inclusion of properties may affect the format.
The primitive types can be written explicitly using methods for each type. They may also be written generically as objects. For instance, a call to BytesMessage.writeInt(6) is equivalent to BytesMessage.writeObject(new Integer(6)). Both forms are provided, because the explicit form is convenient for static programming, and the object form is needed when types are not known at compile time.
When the message is first created, and when clearBody is called, the body of the message is in write-only mode. After the first call to reset has been made, the message body is in read-only mode. After a message has been sent, the client that sent it can retain and modify it without affecting the message that has been sent. The same message object can be sent multiple times. When a message has been received, the provider has called reset so that the message body is in read-only mode for the client.
If clearBody is called on a message in read-only mode, the message body is cleared and the message is in write-only mode.
If a client attempts to read a message in write-only mode, a MessageNotReadableException is thrown.
If a client attempts to write a message in read-only mode, a MessageNotWriteableException is thrown. @openwire :marshaller code=24 @see javax.jms.Session#createBytesMessage() @see javax.jms.MapMessage @see javax.jms.Message @see javax.jms.ObjectMessage @see javax.jms.StreamMessage @see javax.jms.TextMessage

    
    /**
     * @return a new object instance
     */
    public DataStructure createObject() {
        return new ActiveMQBytesMessage();
    }

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    /**
     * @return a new object instance
     */
    public DataStructure createObject() {
        return new ActiveMQBytesMessage();
    }

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    /**
     * @return a new object instance
     */
    public DataStructure createObject() {
        return new ActiveMQBytesMessage();
    }

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    public ActiveMQMessage convertFrame(ProtocolConverter converter, StompFrame command) throws JMSException, ProtocolException {
        final Map headers = command.getHeaders();
        final ActiveMQMessage msg;
        if (headers.containsKey(Stomp.Headers.CONTENT_LENGTH)) {
            headers.remove(Stomp.Headers.CONTENT_LENGTH);
            ActiveMQBytesMessage bm = new ActiveMQBytesMessage();
            bm.writeBytes(command.getContent());
            msg = bm;
        } else {
            ActiveMQTextMessage text = new ActiveMQTextMessage();
            try {
                text.setText(new String(command.getContent(), "UTF-8"));

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            ActiveMQTextMessage msg = (ActiveMQTextMessage)message.copy();
            command.setContent(msg.getText().getBytes("UTF-8"));


        } else if (message.getDataStructureType() == ActiveMQBytesMessage.DATA_STRUCTURE_TYPE) {


            ActiveMQBytesMessage msg = (ActiveMQBytesMessage)message.copy();
            msg.setReadOnlyBody(true);
            byte[] data = new byte[(int)msg.getBodyLength()];
            msg.readBytes(data);


            headers.put(Stomp.Headers.CONTENT_LENGTH, "" + data.length);
            command.setContent(data);
        }
        return command;

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     * @return the an ActiveMQBytesMessage
     * @throws JMSException if the JMS provider fails to create this message due
     *                 to some internal error.
     */
    public BytesMessage createBytesMessage() throws JMSException {
        ActiveMQBytesMessage message = new ActiveMQBytesMessage();
        configureMessage(message);
        return message;
    }

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        BytesMessage test = localSession.createBytesMessage();
        test.writeBytes(bytes);
        producer.send(test);
        Message msg = consumer1.receive(RECEIVE_TIMEOUT_MILLS);
        assertNotNull(msg);
        ActiveMQBytesMessage message = (ActiveMQBytesMessage) msg;
        assertTrue(message.isCompressed());
        assertTrue(message.getContent().getLength() < bytes.length);


        byte[] result = new byte[bytes.length];
        assertEquals(bytes.length, message.readBytes(result));
        assertEquals(-1, message.readBytes(result));


        for(int i = 0; i < bytes.length; ++i) {
            assertEquals(bytes[i], result[i]);
        }
    }

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        assertEquals(extractText(queue.browse()[0]), extractText(queue.browse()[0]));
    }


    @Test
    public void testBrowseByteMessageFails() throws Exception {
        ActiveMQBytesMessage bm = new ActiveMQBytesMessage();
        bm.writeBytes("123456".getBytes());
        Object result = OpenTypeSupport.convert(bm);
        LOG.info("result : " + result);
    }

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            addItem(CompositeDataConstants.BODY_PREVIEW, "Body preview", new ArrayType(1, SimpleType.BYTE));
        }


        @Override
        public Map<String, Object> getFields(Object o) throws OpenDataException {
            ActiveMQBytesMessage m = (ActiveMQBytesMessage)o;
            m.setReadOnlyBody(true);
            Map<String, Object> rc = super.getFields(o);
            long length = 0;
            try {
                length = m.getBodyLength();
                rc.put(CompositeDataConstants.BODY_LENGTH, Long.valueOf(length));
            } catch (JMSException e) {
                rc.put(CompositeDataConstants.BODY_LENGTH, Long.valueOf(0));
            }
            try {
                byte preview[] = new byte[(int)Math.min(length, 255)];
                m.readBytes(preview);
                m.reset();


                // This is whack! Java 1.5 JMX spec does not support primitive
                // arrays!
                // In 1.6 it seems it is supported.. but until then...
                Byte data[] = new Byte[preview.length];

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     * @return the an ActiveMQBytesMessage
     * @throws JMSException if the JMS provider fails to create this message due
     *                 to some internal error.
     */
    public BytesMessage createBytesMessage() throws JMSException {
        ActiveMQBytesMessage message = new ActiveMQBytesMessage();
        configureMessage(message);
        return message;
    }

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