Nested property methods not found when inheriting from List<T>

This is strange but I noticed that calling nested properties work, but not nested methods.

// this works in the json rule
"expression": "input1.PropertyClass.MyProperty"

//this doesn't
"expression": "input1.PropertyClass.MyMethod('some string')"

This is the exception when trying to invoke nested methods:

“Exception while parsing expression input1.PropertyClass.MyMethod("hello") - No applicable aggregate method ‘MyMethod(String)’ exists”

How can I invoke nested methods from an expression?

[abbasc52]

@abbasc52 , we’re happy to do some investigation to see if it’s possible to support this scenario. Any chance you can give us some pointers as to where to start in the code?

Hi @everettcomstock, this seems to be an issue with dynamic.linq.core library which is primarily used for expression parsing. I had dug deep into their implementation, and it seems they handle IEnumerable related classes separately.

I still need to go through the example to see if there is any workaround and if there is a scope to support it. Although this is a corner case, I will let you know if there is an opportunity to support it.

[duyn9uyen]

I was hoping that someone can at least confirm whether this should work or not. I can’t find a similar example of this. I only see root properties and methods being called by RE in your documentation.