Deleting items from a list
Just a quick one to point out a common pitfall when working with list objects. To remove objects from a list you need to use an iterator. In X++ iterators require the developer to write a loop with...
View ArticleOn hand inventory in code
Inventory in Ax is quite important. Often developers need to find out what the stock levels are in code. It’s tempting to write a query directly on the InventSum table and be done with it. This is...
View ArticleDon’t forget the correct method signature when using runClassMethodIL()
If you think you know how something works, but really don’t and you’re not paying attention when errors pop up then you’re going to have a bad time. So if you write this: static private void myMethod()...
View ArticleAx 2012 X++ editor extensions
If you’re developing in Ax 2012 and you’re not yet using the editor extensions immediately stop what you’re doing and head over to Codeplex to download the extensions. Installing them is as easy as...
View ArticleInconsistent behavior between X++ and CIL using tables with inheritance
This one is a doozy. Recently a customer contacted me because they were having problems running a job they made themselves to export product information. It seemed to work fine in the client during...
View ArticleKeeping an eye on output to files
Just a quick tip when you want to do some simple logging when jobs are running. Suppose you need to modify a lot of data and you want to log which records are updated and some other things. You could...
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Unexpected assertion failure caused by impossible modification
Today I was testing some modifications in the Ax 2012 project module and wanted to delete a test project I had just created. Much to my surprise I ended up in the debugger on a failed Debug::assert()...
View ArticleCan’t define abstract or final methods on abstract table
It seems Ax doesn’t allow you to use abstract or final on abstract tables. When adding abstract public myMethod() to an abstract table (e.g. EcoResProduct), you get this compile error: Conflicting...
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Performance considerations: event handlers
Lately I’ve been involved quite a bit in performance analysis and tuning on Ax 2012. It’s not only important to solve the customer’s requirements but at the same time the solution must be implemented...
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Performance considerations: aggregate functions
It’s time for another quick performance tip. During a reviews sometimes I come across code like this (table changed to protect the guilty): ProdTable prodTable; real total; ; while select prodTable {...
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