Examples of com.ericsson.otp.erlang.OtpMsg

com.ericsson.otp.erlang.OtpMsg

Provides a carrier for Erlang messages.

Instances of this class are created to package header and payload information in received Erlang messages so that the recipient can obtain both parts with a single call to {@link OtpMbox#receiveMsg receiveMsg()}.

The header information that is available is as follows:

a tag indicating the type of message
the intended recipient of the message, either as a {@link OtpErlangPid pid} or as a String, but never both.
(sometimes) the sender of the message. Due to some eccentric characteristics of the Erlang distribution protocol, not all messages have information about the sending process. In particular, only messages whose tag is {@link OtpMsg#regSendTag regSendTag} contain sender information.

Message are sent using the Erlang external format (see separate documentation). When a message is received and delivered to the recipient {@link OtpMbox mailbox}, the body of the message is still in this external representation until {@link #getMsg getMsg()} is called, at which point themessage is decoded. A copy of the decoded message is stored in the OtpMsg so that subsequent calls to {@link #getMsg getMsg()} do not require that themessage be decoded a second time.

              .getParameterAnnotations()) };
      OtpErlangObject otpArgs = new OtpErlangTuple(argsArray);
      tmpMbox.send(msg.getOperation().getName(), binding.getNode(),
          otpArgs);
      if (msg.getOperation().getOutputType() != null) {
        OtpMsg resultMsg = null;
        if (binding.hasTimeout()) {
          resultMsg = tmpMbox.receiveMsg(binding.getTimeout());
        } else {
          resultMsg = tmpMbox.receiveMsg();
        }
        OtpErlangObject result = resultMsg.getMsg();
        msg.setBody(TypeHelpersProxy.toJava(result, msg.getOperation()
            .getOutputType().getPhysical(), jmethod
            .getAnnotations()));
      }
    } catch (InterruptedException e) {

  }


  public void run() {
    try {
      // NOTE: there's also a timeout, like in reference bindings
      OtpMsg msg = null;
      if (nodeElement.getBinding().hasTimeout()) {
        msg = connection.receiveMsg(nodeElement.getBinding()
            .getTimeout());
      } else {
        msg = connection.receiveMsg();
      }
      // check if request is message or RPC
      if (msg.getRecipientName().equals(MessageHelper.RPC_MBOX)
          && !nodeElement.getBinding().isMbox()) {
        handleRpc(msg);
      } else if (!msg.getRecipientName().equals(MessageHelper.RPC_MBOX)
          && nodeElement.getBinding().isMbox()) {
        handleMsg(msg);
      } else {
        // received wrong message type
      }

Examples of com.ericsson.otp.erlang.OtpMsg

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