Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Add support to any Iterable types on PropertyAccessor #907

Conversation

ljtfreitas
Copy link

Sometimes, for better clarity of the application model, we create objects that encapsulate a Collection, and this object comes to represent a collection of a certain type in the application model. To simplify for-each operations, this object must implement java.lang.Iterable. Example:

public class MyType {
    @NotNull
    private String name;
}

public class MyTypesGroup implements Iterable<MyType> {
    private Collection <MyType> myTypes = new ArrayList <MyType> ();

    @Override
    public Iterator<MyType> iterator() {
         return myTypes.iterator();
    }

    // model methods
}

public class MyAggregateType {
     @Valid
     private MyTypesGroup myTypesGroup MyTypesGroup = new ();
}

Databind, get and set properties operations, typically used with BeanWrapper, they are not supported for these objects (in the above example, something like "myTypesGroup[0].name").

In my use case, with Hibernate Validator, the path will be generated "myTypesGroup[0].name" (Hibernate Validator au), occurring an exception when the Spring tries to extract the property value (to generate the error message on the Spring MVC)

This pull request adds java.lang.Iterable as a supported type for reading properties by PropertyAccessors.

I have signed and agree to the terms of the Spring ICLA.

Thanks (and sorry for any English errors :))

@spring-projects-issues spring-projects-issues added the status: waiting-for-triage An issue we've not yet triaged or decided on label Jan 24, 2019
@pivotal-issuemaster
Copy link

@ljtfreitas Please sign the Contributor License Agreement!

Click here to manually synchronize the status of this Pull Request.

See the FAQ for frequently asked questions.

@rstoyanchev rstoyanchev added the in: core Issues in core modules (aop, beans, core, context, expression) label Nov 11, 2021
@pivotal-cla
Copy link

@ljtfreitas Please sign the Contributor License Agreement!

Click here to manually synchronize the status of this Pull Request.

See the FAQ for frequently asked questions.

@jhoeller jhoeller self-assigned this Nov 22, 2021
@rstoyanchev rstoyanchev added this to the 6.0.x milestone Nov 23, 2021
@rstoyanchev rstoyanchev added type: enhancement A general enhancement and removed status: waiting-for-triage An issue we've not yet triaged or decided on labels Nov 23, 2021
@jhoeller jhoeller modified the milestones: 6.0.x, 6.x Backlog Jan 11, 2023
@jhoeller jhoeller modified the milestones: 6.x Backlog, 6.1.0-M2 Jul 11, 2023
@jhoeller
Copy link
Contributor

As part of the wider binding and validation theme in 6.1, I've picked up this one in a custom fashion, unified with our Set/Collection handling (just doing the size check after the iteration rather than before).

Your pull request was a great starting point there, thanks for your efforts! Sorry for not revisiting it earlier...

@jhoeller jhoeller closed this in c20a2e4 Jul 11, 2023
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
in: core Issues in core modules (aop, beans, core, context, expression) type: enhancement A general enhancement
Projects
None yet
Development

Successfully merging this pull request may close these issues.

None yet

6 participants