How can I get a class buffer set in previous caller to a batch job class?

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Posted on by Sangram Shinde

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Hi Techies,

I have written a multi-threading batch job class(extends RunbaseBatch) in which I need to access one class buffer that is traversing from previous callers. I brought that buffer till this multi-threaded class by setting and getting with parm methods. whereas I can access this buffer if I don't run this class in batch, but when I enable the 'Run in batch' checkbox and executes, it loses the buffer and sets to null.

I can't add it in macro list as it is a heavy object and cannot be added in container.

I have an alternate solution, where I can reconstruct this when I run in batch and that works too, but to see the output after successful execution of batch job I need to open a complete new form and then navigate till this form to check the output. Whereas the expectation is whenever execution of batch job completes successfully I should close the form and it should show result in previous form, so the refresh is not happening correctly on this previous form even after writing refresh code because we construct new buffer in batch class.(which losses few other references).

Can anyone help me out here on how can I access the same class buffer instead of reconstructing new? or suggest other solution where I can see output once I close the current form instead of opening in new tab.

Any response is appreciated.

Thanks!

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Sergei Minozhenko 23,095 on at

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Hi,

Is it about AX 2012 or D365?

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nmaenpaa 101,172 Moderator on at

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I'm not sure if I understand correctly. But perhaps it helps if we think how the batch class works.

When you set it to run in batch, it stores all "input parameters" (defined in [tag:CurrentList]), packs them in a container and saves this container in the database.

When the batch actually runs, it reads this container from the database, unpacks it, retrieves the variables and instantiates the class. Then the class is executed.

This instance of your class can't see any "caller" classes (there aren't any - this class was just instantiated by the batch framework!). And it can't see (or refresh or close!) any forms that some user session might or might not have open.

It's just not possible that the caller class instance could be somehow stored in the batch. It exists only in your user session. When you don't run your class in batch, different class instances in your session can see each other (presuming you pass pointer of that class to another class). But it can't work like that in batch.

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Sangram Shinde 2,120 on at

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Agreed Nikolaos, thanks for the inputs!

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