Android Question RDC, how to pause execution until Job Done?

incendio · Apr 30, 2014

Hi guys,

I have a following codes in RDC

B4X:

Sub btnConnect_Click
    reqManager.Initialize(Me, ConTxt.Text)
   
    ExecQ("select_fngd")
    Do_Process   
End Sub

Sub ExecQ need sometimes to return values. Sub Do_process need these values for other process.

How to pause Sub Do_Process from execution until Sub ExecQ return values?

Thanks in advance.

DonManfred · Apr 30, 2014

You should call do_process in jobdone

incendio · Apr 30, 2014

Thanks for your replied.

If I call do_process in jobdone, when there is a failure in the connection, do_process will never call.

By calling do_process outside the jobdone, I can set in jobdone a boolean variable to true value and in do_process, waiting for specific amount of time for this variable value.

If after a specific amount of time, this variable never come to true value, then I can tell users that there is something wrong with the connection.

Erel · Apr 30, 2014

If I call do_process in jobdone, when there is a failure in the connection, do_process will never call.

That is not correct. JobDone should always be raised. Job.Success will be False if there was an error.

incendio · Apr 30, 2014

Thanks for your replied,

So, just like Manfred said, the process must be call inside JobDone, no other way to pause the excecution and wait for a return in JobDone event?

If I have 1000 data to insert, and during the insert, the connection in broken, Job.Success = false will be triggered, right?

Erel · Apr 30, 2014

It is not possible to pause the main thread.

Job.Success = false will be triggered, right?

Yes.

incendio · Apr 30, 2014

OK, thanks for clarification.

incendio · May 1, 2014

Erel said:
That is not correct. JobDone should always be raised. Job.Success will be False if there was an error.

Dear Erel,

Just testing this, and I got return Job.Success = false while it actually success.

Inserted a record, from server console, it took 44195ms.
JobDone on Android device return false, but when I checked on database server, data inserted ok.

I believe, JobDone waiting for a specific amount of time to get result (success or fail), any change to increase this waiting time?

Erel · May 1, 2014

Job.Success is true when the http response status code is 2xx.

You can change the timeout: http://www.b4x.com/android/forum/threads/set-http-request-header-with-httputils2.39413/#content

incendio · May 1, 2014

Erel said:
Job.Success is true when the http response status code is 2xx.

You can change the timeout: http://www.b4x.com/android/forum/threads/set-http-request-header-with-httputils2.39413/#content

Thanks for your replied.

Sorry, I have read that tutor, if not mistaken, I have to call httpjob.GetRequest.Timeout, right?
But where exactly to put this command? In DBRequest class? I didn't see any download keyword in that class.

Erel · May 2, 2014

See ExecuteQuery and ExecuteBatch subs. You need to put it after j.PostBytes.

incendio · May 3, 2014

Ok, thanks for the answer.

Android Question RDC, how to pause execution until Job Done?

incendio

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DonManfred

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incendio

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Erel

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incendio

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Erel

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