How to connect and performe aggregation queries using mongoDb and kotlin?

Working with Data Drivers
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Hello everyone!

I have managed to connect a kotlin project made in jetpack compose to mongodatabase and can performe CRUD operations.

I am trying to learn how to performe a simple aggregation query such as matching the users age with 20. Lets say that there are 100 people in the document and 35 people with the age of 20. I want the following message “You matched with: 35 people” to be displayed when I press a buttom and this number will adapt dependent on what age the user chooses. Meaning age of 40 will match with 20 users etc that are age 40 within a set of 100 people.

How can this be done using mongoDb and kotlin language in jetpack compose? Appreciate any feedback or advice!

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Hi Josef! If you’re building an Android application with JetPack Compose, I’d recommend using the Atlas Device SDK for Kotlin. You can find documentation on how to do a find() here.

If your application is server-side, we have some documentation and code examples around aggregation here using the MongoDB Kotlin Driver for server-side.

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Thanks for the feedback! Will try to follow the examples there and see if I can create something similar. If not, I will be back with more questions :slight_smile: @Ashni_Mehta