Package org.apache.activemq.util

Examples of org.apache.activemq.util.ByteArrayOutputStream

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          if( !rs.next() )
              return null;
          Blob blob = rs.getBlob(1);
          InputStream is = blob.getBinaryStream();
         
          ByteArrayOutputStream os = new ByteArrayOutputStream((int)blob.length());         
          int ch;
          while( (ch=is.read())>= 0 ) {
              os.write(ch);
          }
          is.close();
          os.close();
         
          return os.toByteArray();
         
      } catch (IOException e) {
            throw (SQLException) new SQLException("BLOB could not be updated: "
                    + e).initCause(e);
        } finally {
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    public void storeContent() {
        ByteSequence bodyAsBytes = getContent();
        if (bodyAsBytes == null && object != null) {
            try {
                ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
                OutputStream os = bytesOut;
                ActiveMQConnection connection = getConnection();
                if (connection!=null && connection.isUseCompression()) {
                    compressed = true;
                    os = new DeflaterOutputStream(os);
                }
                DataOutputStream dataOut = new DataOutputStream(os);
                ObjectOutputStream objOut = new ObjectOutputStream(dataOut);
                objOut.writeObject(object);
                objOut.flush();
                objOut.reset();
                objOut.close();
                setContent(bytesOut.toByteSequence());
            } catch (IOException ioe) {
                throw new RuntimeException(ioe.getMessage(), ioe);
            }
        }
    }
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    }

    private void initializeWriting() throws JMSException {
        checkReadOnlyBody();
        if (this.dataOut == null) {
            this.bytesOut = new ByteArrayOutputStream();
            OutputStream os = bytesOut;
            ActiveMQConnection connection = getConnection();
            if( connection!=null && connection.isUseCompression() ) {
                // keep track of the real length of the content if
                // we are compressed.
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    }

    protected void handleException(Throwable exception, StompFrame command) throws IOException {
        LOG.warn("Exception occured processing: \n" + command, exception);
        // Let the stomp client know about any protocol errors.
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        PrintWriter stream = new PrintWriter(new OutputStreamWriter(baos, "UTF-8"));
        exception.printStackTrace(stream);
        stream.close();

        HashMap<String, String> headers = new HashMap<String, String>();
        headers.put(Stomp.Headers.Error.MESSAGE, exception.getMessage());

        if (command != null) {
            final String receiptId = command.getHeaders().get(Stomp.Headers.RECEIPT_REQUESTED);
            if (receiptId != null) {
                headers.put(Stomp.Headers.Response.RECEIPT_ID, receiptId);
            }
        }

        StompFrame errorMessage = new StompFrame(Stomp.Responses.ERROR, headers, baos.toByteArray());
        sendToStomp(errorMessage);
    }
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  }
 
  private void trace(DataStructure command) {
    try {
     
      ByteArrayOutputStream baos = new ByteArrayOutputStream(maxTraceDatagramSize);
      DataOutputStream out = new DataOutputStream(baos);
      wireFormat.marshal(brokerId, out);
      wireFormat.marshal(command, out);
      out.close();
      ByteSequence sequence = baos.toByteSequence();
      DatagramPacket datagram = new DatagramPacket( sequence.getData(), sequence.getOffset(), sequence.getLength(), address);   
      socket.send(datagram);
     
    } catch ( Throwable e) {
      log.debug("Failed to trace: "+command, e);
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* @version $Revision: 1.1 $
*/
public class ObjectStreamWireFormat implements WireFormat {

    public ByteSequence marshal(Object command) throws IOException {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();       
        DataOutputStream ds = new DataOutputStream(baos);
        marshal(command, ds);
        ds.close();
        return baos.toByteSequence();
    }
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    }

    public void write(Command command, SocketAddress address) throws IOException {
        synchronized (writeLock) {

            ByteArrayOutputStream writeBuffer = createByteArrayOutputStream();
            DataOutputStream dataOut = new DataOutputStream(writeBuffer);
            headerMarshaller.writeHeader(command, dataOut);

            int offset = writeBuffer.size();

            wireFormat.marshal(command, dataOut);

            if (remaining(writeBuffer) >= 0) {
                sendWriteBuffer(address, writeBuffer, command.getCommandId());
            }
            else {
                // lets split the command up into chunks
                byte[] data = writeBuffer.toByteArray();
                boolean lastFragment = false;
                for (int fragment = 0, length = data.length; !lastFragment; fragment++) {
                    writeBuffer = createByteArrayOutputStream();
                    headerMarshaller.writeHeader(command, dataOut);
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    protected int remaining(ByteArrayOutputStream buffer) {
        return datagramSize - buffer.size();
    }

    protected ByteArrayOutputStream createByteArrayOutputStream() {
        return new ByteArrayOutputStream(datagramSize);
    }
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        String text = new String(utf8, "UTF-8");
        return unmarshalText(text);
    }

    public ByteSequence marshal(Object command) throws IOException {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        DataOutputStream dos = new DataOutputStream(baos);
        marshal(command, dos);
        dos.close();
        return baos.toByteSequence();
    }
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    }

    public void write(Command command, SocketAddress address) throws IOException {
        synchronized (writeLock) {

            ByteArrayOutputStream largeBuffer = new ByteArrayOutputStream(defaultMarshalBufferSize);
            wireFormat.marshal(command, new DataOutputStream(largeBuffer));
            byte[] data = largeBuffer.toByteArray();
            int size = data.length;

            ByteBuffer writeBuffer = bufferPool.borrowBuffer();
            writeBuffer.clear();
            headerMarshaller.writeHeader(command, writeBuffer);
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Related Classes of org.apache.activemq.util.ByteArrayOutputStream

  • org.apache.activemq.broker.util.UDPTraceBrokerPlugin
  • org.apache.activemq.command.ActiveMQBytesMessage
  • org.apache.activemq.command.ActiveMQMapMessage
  • org.apache.activemq.command.ActiveMQObjectMessage
  • org.apache.activemq.command.ActiveMQStreamMessage
  • org.apache.activemq.command.ActiveMQTextMessage
  • org.apache.activemq.command.ActiveMQTextMessageTest
  • org.apache.activemq.command.Message
  • org.apache.activemq.command.WireFormatInfo
  • org.apache.activemq.openwire.v1.MessageTestSupport
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