# Get Derived Classes

**URL:** <https://forums.unrealengine.com/t/get-derived-classes/686033>\
**Category:** Blueprint\
**Tags:** unreal-engine, Blueprint\
**Created:** [November 7, 2022, 5:56pm UTC](https://forums.unrealengine.com/t/get-derived-classes/686033 "2022-11-07T17:56:41Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![Chatouille](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/chatouille/32/1194622_2.png) [@Chatouille](https://forums.unrealengine.com/u/Chatouille)\
**Post date:** [November 24, 2022, 5:52pm UTC](https://forums.unrealengine.com/t/get-derived-classes/686033/3 "2022-11-24T17:52:49Z")

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This is not trivial, see my answer here

> [@Get Assets by Class - how to find all BP assets of given class?](https://forums.unrealengine.com/t/get-assets-by-class-how-to-find-all-bp-assets-of-given-class/687899/3):
>
> Afaik this is not simple because assets/packages are not always loaded at all times, and asset registry does not know about blueprints hierarchical inheritance. However, asset registry has ability to search by tags, and blueprints do store their parent class path and their closest native parent class path into tags. Unfortunately searching by tags is not exposed to blueprints so you’ll need C++ utility to get anything done on that front. Here is an example utility that searches blueprints chi…

I’ve stumbled upon a node which actually makes this possible in blueprints though, Tags filtering is just not present in the default ARFilter node.

Here is a prototype implementation that will recursively fetch child blueprint classes until it doesn’t find any new ones anymore.  
Just note the input parameter is by-ref. Other variables are locals.

 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/8/e/7/8e78f014c63bd0e0404712074abdce60af2c1695.png)

Usage is a bit tedious, you need to pass in a full string reference like so :

 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/6/9/f/69fbe46a7f147a352e0954f825efc4e56d51a943.png)

Also note that it won’t fetch native classes, those are not assets. I’m not aware of any blueprint way to find native subclasses. C++ is much more fit for this.

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