Multithread issues about sqlprovider HOT 4 CLOSED

I think we can probably fix most of these issues by making the various dictionaries into concurrent ones. It seems best to aim for being able to share a context with multiple threads. (May even be able to look at making the dictionaries static as well)

This is something on my to do list but I haven't got around to it yet. When I come to doing CRUD (soon) I will have to be a bit more careful, but for now the concurrent dictionaries should do the trick. Perhaps you could try it just in the MySQL one and see how we get on? Let me know of any other threaded problems you are having as well.

Cheers, Ross

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Well even simpler, I added locks around provider creating and the calls to GetColumns that were preloading the column data. Seems to of solved the immediate issue.

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I've removed my locks workaround and updated to the latest SQLProvider (with CRUD support) and have not seen any thread issues yet. It's probably ok to close this.

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I re-implemented your locks with the new architecture, however there are likely going to be be threading issues with the initial CRUD stuff so I am leaving this open for now.

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