What is the relation between Activities and their Classes in ExpressionEditors? e.g. GetCurrentJobInfo

Help Activities
, ,
1

It would be great if I understand how the Activities work with their classes. Here as example: GetCurrentJobInfo

With the Activity GetCurrentJobInfo → output var_crtJobInfo, it works fine and I can use var_JobInfo.ProcessName

Because i have more code in ExpressionEditor, it would be great if we can use the Class GetCurrentJobInfo.
I tried e.g.:
( New GetCurrentJobInfo() ).Result
But it’s type OutArgument(Of CurrentJobInfo) instead type CurrentJobInfo
How can I get please just in ExprEditor, without the Activity, a similar variable var_JobInfo ?

2

It would be great, if you can share more details on your over-all goal and motivations.

the coding of activities can define Classes. These classes will not mandatory define a public constructor. We can touch some hints e.g. by:

grafik
grafik401×133 27 KB

So the Activity code internally will instantiate the object and is returning it via the out_argument.

3

Thanks @ppr.
The generally goal is to understand how the activities and their classes work and if i can use the classes in the Expression Editors. Here, I see the Class UiPath.Core.Activities.GetCurrentJobInfo

Special here, the goal is as I wrote: How can I generate in Expression Editor a variable CurrentJobInfo, similar the Output of the activity.

In your example, i cannot understand why can we not use:
New CurrentJobInfo()

4

as mentioned:

and this we can interpret in a first touch from shown error message

5

correct. the constructor is not public. i.m.o it could be public…
this means, we cannot generate just from ExpressionEditor a variable var_jobInfo similar the output of the activity? :frowning:

6

when the implementation of the class is coded as interpret, then the constructor is not public usable and using new …() is blocked.

7

sorry if I’m stubborn, CurrentJobInfo is not public, but GetCurrentJobInfo is public (as the activity) and we can use New GetCurrentJobInfo(). I dont understand why cannot we use it in ExprEditors to get the currentJobInfo

8

Maybe reflection analysis will help you for a more deep dive:
grafik

GetType(UiPath.Core.Activities.CurrentJobInfo).GetConstructors(BindingFlags.Instance Or BindingFlags.Public Or BindingFlags.NonPublic)(0).IsAssembly