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Tommy Heyding · Feb 17

 Hi Robert,

thanks for the advice. I was hoping that the interop production of IRIS is able to handle cases like that but couldn't find anything in the documentation. Anyway I followed your hint and found a lightweight solution.

Here is what one can do to avoid spamming the production log with error messages in case a transformation create objects that violate the uniqe index of the class definition.

  1. Use a class that extends Ens.Rule.FunctionSet
  2. Create a class method that calls the MyIndexExists() method which returns a boolean
  3. Return the inverted boolean (to align with the intention of the method name and a better understanding inside the rule definition of the production)
  4. Add a routing rule for the object that checks the condition before the source object is sent to the transformation (you can now choose your function set method from the fx dropdown when you click on the condition within the rule on the rule editor page)
Class My.FunctionSet Extends Ens.Rule.FunctionSet [ Abstract, System = 4 ]
{

ClassMethod IsNewMyClassObject(Prop1,Prop2) As %Boolean [CodeMode = expression, Final]
{
'##class(MyClass).MyIndexExists(Prop1, Prop2)    
}

}

 

Tommy Heyding · Jul 10, 2024

Hi Guillaume,

thank you for the post and the straightforward recommendations. I have been using embedded Python for a while and have found that the hybrid between ObjectScript and python code is not always easy to maintain and refactor.

That's why I have now consistently outsourced the python code to .py files and imported my modules via 

##class(%SYS.Python).Import("mymodule")

after reading your post. So far I'm very happy with how things are going, except I've had problems when applying the pythonic naming conventions for method names. 

def validate_header():

caused errors when I tried to call it this way: 

$$$ThrowOnError(mymodule.validate_header())

I had to rename the method to 

def validateHeader():

which isn't particularly bad, but I thought I'd mention it here in case anyone is stuck in a similar situation
 

Tommy Heyding · Jun 5, 2024

And here is the code if you are using a Installer manifest 😉 Helps us while working with containers.

  <Namespace Name="${NamespaceSub}" Code="${NamespaceSub}_CODE" Data="${NamespaceSub}_DATA" Create="yes" Ensemble="1">
...
    <Invoke Class="HBT.Util.WebApp" Method="DisableNewRuleEditor" CheckStatus="1"></Invoke>
  </Namespace>
Class HBT.Util.WebApp
{

ClassMethod DisableNewRuleEditor() As %Status
{
        #Dim tSC As %Status
        #Dim tSE As %Exception.StatusException
        
        Try {
            Zn "%SYS"
            &SQL(UPDATE Security.Applications SET Enabled = 0 WHERE ID = '/ui/interop/rule-editor') 
            Set tSC = $$$OK
        } Catch tSE {
            Set tSC = tSE.AsStatus()
            Quit
        }
        Quit tSC
}

}
Tommy Heyding · Jan 16, 2023

You can use your transformations within a Message Router (= Business Process). You need to define a rule set for this router and within this rule set you can add "send" actions with a "transform" property which will point to your transformation. Some old documentation, but it should describe how it works: https://docs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KEY...

Tommy Heyding · Jul 5, 2022

Hi Eduard,

thanks a lot for the explanation. I just started to learn how the SDK for Python works and maybe you can help me with the following question.

I'm trying to access my Production Object via the Class Method "ProductionItems" to store a list of the items: https://docs.intersystems.com/irislatest/csp/documatic/%25CSP.Documatic....

According to the docs the method requires two Output arguments that I would pass by reference using ObjectScript. How can I do this within python?

Thanks,

Tommy