Spring Add support for LHS Brackets from query parameters

LHS Brackets style of query parameters is commonly used, it used by Stripe, GoCardless, and others. Sample: htps://domain.com?price[gte]=200&price[lte]=500

https://www.moesif.com/blog/technical/api-design/REST-API-Design-Filtering-Sorting-and-Pagination/#lhs-brackets

Will be great to be possible to map this to the class

class Price {
    private Long gte;
    private Long lte;
    // ...
}

class Request {
    private Price price;
    // ...
}

It works if the price is a Map

class Request {
    private Map<String, String> price;
    // ...
}

But it doesn't work for a class.

Comment From: spencergibb

Should probably be a spring framework issue since that is where spring mvc and webflux live.

Comment From: wilkinsona

Yep. We'll move it over.

Comment From: rstoyanchev

Data binding uses JavaBean conventions and that's the syntax for maps, see: https://docs.spring.io/spring/docs/current/spring-framework-reference/core.html#beans-beans-conventions

The following works:

public class Request {

    private Map<String, Long> price;


    public Map<String, Long> getPrice() {
        return price;
    }

    public void setPrice(Map<String, Long> price) {
        this.price = price;
    }
}

Comment From: spring-projects-issues

If you would like us to look at this issue, please provide the requested information. If the information is not provided within the next 7 days this issue will be closed.

Comment From: spring-projects-issues

Closing due to lack of requested feedback. If you would like us to look at this issue, please provide the requested information and we will re-open the issue.

Comment From: eric-gymondo

Hey Guys, I think this feat would be a nice addition to spring in general, qs does something really cool with being able to parse brackets to objects and objects to brackets https://github.com/ljharb/qs.

I see that the issue was closed, does it mean the spring team did not see a value on it?

Comment From: Jotschi

I started work on a LHS filter parser for my own project. Found this issue while searching for an existing solution. Maybe someone finds this useful. https://github.com/metaloom/lhs-filter