Call script from custom class - v8.0.1

Could you please explain your use-case?

Sure 

I have created a class to model some data. This is my custom class which I am using to store some deserialised JSON data.

Now, within this class I have a property which can be calculated (like a template) by calling an existing script. For instance, lets say I have 2 properties in my class, name and email. I set name, and email is set by calling an existing script CCC_CalculateEmail and passing name into it. 

Hope that makes sense?

How is your class instantiated? Is it used in some other scripts inside of OneIM?

Yes, I have a custom script in which I instantiate the class. I also have a custom New operator. Basically I am trying something like this in the class

Public Property Name()

Get 

....

Set(ByVal value as String)

    _Name = value

    _Email = CCC_MyFunc(Me._Name)

End Set

Here CCC_MyFunc is a separate script altogether

Yes, I have a custom script in which I instantiate the class. I also have a custom New operator. Basically I am trying something like this in the class

Public Property Name()

Get 

....

Set(ByVal value as String)

    _Name = value

    _Email = CCC_MyFunc(Me._Name)

End Set

Here CCC_MyFunc is a separate script altogether

FYI - This question has already been asked it seems, shame there is no solution though. I did try calling the script by creating an object of DynScripts.Scripts but that did not work, when runing through designer I get an object reference not set error when calling CCC_MyFunc even though the code compiles (locally)

https://www.oneidentity.com/community/identity-manager/f/forum/29982/script-library---customer-scripts---public-class-ccc_mynewclass-is-outside-the-namespace/73364#73364

You should be able to use the ScriptRunner - class to call the script.

Attached are two sample functions to demonstrate the usage. The first function CCC_ExecuteScript is in my case a script that is stored in OneIM itself as well, just to demonstrate the usage of the ScriptRunner class. In your case, you need to have access to the current Session somehow.

The second function CCC_MyFancyFunction is the script that should be called.

Please be aware, that when you test this in the SystemDebugger, it will only work if the called script is already stored and compiled in the OneIM database.

Public Function CCC_ExecuteScript(ByVal ScriptName As String, ByVal name As String, ByVal email As String) As String

    Dim runner = New VI.DB.Scripting.ScriptRunner(Session.Scripts()(VI.DB.Scripting.ScriptContext.Scripts), Session)
    If runner.Class.HasMethod(ScriptName, {GetType(String), GetType(String)}) Then
        Dim result = runner.Eval(ScriptName, {name, email})
        Return CStr(result)
    End If
    Return String.Empty
End Function

Public Function CCC_MyFancyFunction(ByVal name As String, ByVal email As String) As String

    Return String.Format("{0} ({1})", name, email)
End Function

Thanks a lot Markus!

Actually I just copied your example (CCC_ExecuteScript) into my class as a new class function, and got the same error (reference to a non-shared member requires an object reference)

Right, so the issue is I somehow need to get Session passed into the function (as you mentioned previously Markus, I missed that part). I'll work on this and if I find a solution I'll update this - I'm guessing I need to pass the session as a parameter from the object of the class somehow. Keeping this thread open in the meantime

Got it, pasting the source code here - the key is to have a session member variable

Class Test

	Public _s As VI.DB.Entities.ISession
	Dim _prop As String
	
	Public Property Prop() As String
		Get
			Return Me._prop
		
		End Get
		
		Set(ByVal t As String)
			Dim runner = New VI.DB.Scripting.ScriptRunner(Me._s.Scripts()(VI.DB.Scripting.ScriptContext.Scripts), Me._s)
			Dim result = runner.Eval("CCC_MyScript", {"John", "@company.com"})
			Me._prop = CStr(result)
		End Set
		
	End Property
	
End Class

Public Function  CCC_Myfunc() As String

		Dim p As New Test With {._s = Session, .Prop = "ha"}
		Return p.Prop
	
End Function