How to handle asynchronous calls using OSB?

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  What I said OR the 'Start asynchronous call' is the preferred method for starting background tasks. This call is usually used to run background tasks. For example, you have a process of journal. When your application starts it would use the "asynchronous call Start" to start the process of journal and then move on to the other stuf. The process of the journal would then happily run in the background and the main application is free to do other things. Of course when implementing these types of systems you need a way to coordinate things like exit. This is where the queues and stuff come it.

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  The new node to start the asynchronous call is great for the spawning of several instances of the reentrant vis.  However, I fell a little bit using for screws not reentrant the old practice of using the method "Run a VI" would allow us to check the Execution.State of the VI before calling the method to execute.  This way if the State was running or running at a higher level, we could spend the invoke node and just use a property node to open the front panel.  With the starting node the asynchronous call, it seems that we must use a strictly typed static VI reference, and when we open the reference VI, VI gets booked and his Execution.State = running.  So, how whether it is not only reserved by wire, but actually running before calling Start redundant?

  Moreover, the redundant beginning has an interesting behavior.  Actually, it will cause the targeted VI must be performed again after it stops.  Even if you tap the Abort button on the target VI, it run immediately still and always the same number of times as the starting node the asynchronous call is executed.  There is nothing wrong with that, and I guess the simple answer is to simply go back to the old method of "run a VI.  It's just that ability over these inputs directly to the connector pane is so nice.  Maybe missing me something obvious.  Oh, I am referring to the call and forget mode (0x80).

  Thank you

  Dan

  Maybe missing me something obvious.  Oh, I am referring to the call and forget mode (0x80).

  Yes you have forgotten that he forgets the Run method always seems to be a better choice for this mode

• Asynchronous call to the OSB

  Hi all
  
  I have an obligation to do aynchronous call at the OSB11g. I am able to post a message in the queue using JMSProducer business, also have another proxy service JMSConsumer who read the message from the queue and forward it to the different queues using JMSConsumer business.
  
  My requirement is to transmit messages to different webserices/back-end and I do not expect any kind of response from the backend, just want to send an acknowledgement to, say an application that publishes the message.
  
  Any suggestions would be much appreciated.
  Thank you.

  Hello

  Save your webservice backend as business in OSB... Service and then use Action published in the stream of messages to call webservice even publish action is used for asynchronous calls...

  Kind regards
  Afonso Gupta

• Handling error / logging with asynchronous calls

  Hello
  
  I want to record each error that my app can throw. I thought it would be enough to surround the launch or method the method start with a try... catch. But it does not work like the exception.
  If an error occurs during an asynchronous call, for example by clicking on a button, the exception is never caught.
  
  You have an idea how to solve this problem?
  
  Example:
  

  import javafx.application.Application;
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              Button button = new Button("Click");
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• LabVIEW executable not feasible using the asynchronous call

  Hello

  my project works very well from the source, but fails to run as an executable file. I was able to follow him to the asynchronous call of a VI.

  

  So far, I was able to solve the problem by using a queue dummy and loops in order to start the VI parallel to the rest of the code.

  I tried:

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  3 allways include reminder all screws and all the screws called by reference via Server

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• How to stop an asynchronous call to activex makes a VI?

  I use Labview 8.6 to collect data of monkeys hand movement. Because some graphics are necessary, I do use Visual c# express edition to program graphics and appeal that the VI using ActiveX from my c# code. I use three VI, which two I call synchronously (I'm waiting for the call ends). But the third VI must be called asynchronously so that I can continue my work in c#. This VI extracts data from the accelerometer via DAQ and exported in a file of measure LV in a while loop.

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  I built a labview moderately complex program to connect with a new parser that I build.  To briefly describe the application, the main VI is a user interface which, in an initialization step, asynchronously calls a dozen other screws each called VI is a state machine that handles communication with a component specific for my parser, whether heat controllers, regulators debit, NI DAQmx channels, a SQL database, etc..  I use the VFG and/or EI to communicate information between the main VI and each component. The system works well when it passes through NI Labview 2012 SP1 (full development Version).  I build the project successfully, but when I run the construction (on the same development machine), I encounter the "the VI is not executable.  The full development of LabVIEW version is needed to correct errors"message.

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  Thinking that the component should not be a problem, I add the async call for this component in my main VI, to test it.  This works well in the built environment of Labview development, without errors, but alas, I get the same message as the "VI is not executable' when I try to run the build.

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