merging values passed in path params with deserialized values

[nykolaslima]

This closes #940.

@Turini Can you take a look please?

Obs: I had to add the commons-beanutils dependency from Apache.

@lucascs

[lucascs]

why do you need this code?

[nykolaslima]

Actually it isn't. I just did this to make it explicit. What do you think?

[lucascs]

I guess there is a way to do this without having to add this extra dependencies... Theoretically you could use IOGI with an existing object, and only apply the request.getParameters() (path params) into this object. No need for merges. Do you wanna give a try?

[nykolaslima]

@lucascs We could try to do this with IOGI but we would need to guarantee the order of the observers. It depends on executing DeserializingObserver first.

With the current CDI version we can't guarantee it. Maybe when CDI 2.0 is released we can change it and remove the commons-beanutils dependency.

[Turini]

It'd be great do not depend on the order of observers like this PR proposes.
@lucascs can you think in a way to do that without adding this dependency?
If it's possible, it would be even better (I couldn't look deep into this code yet)

[lucascs]

If you use this class from IOGI:
https://github.com/rafaeldff/Iogi/blob/master/src/br/com/caelum/iogi/reflection/NewObject.java

construct it with VRaptorInstantiator, the request parameters and the deserialized object, you just use valueWithPropertiesSet

Something like this should work.

[nykolaslima]

Actually I didn't understand. Do you have any example of this being used?

[lucascs]

Take a look at the test:
https://github.com/rafaeldff/Iogi/blob/master/test/br/com/caelum/iogi/reflection/NewObjectTest.java

[nykolaslima]

@lucascs but this NewObject will copy all object levels?

Remembering that not only the first level should be handled.

e.g.

public class A {
  private B b;
}

public class B {
  private C c;
}

We could use in our controller:

@Post("/xpto/{a.b.c}")
public void something(A a) {
}

[lucascs]

Not sure, try it please =)

[nykolaslima]

Ok!

I'll give it a try and after it I'll give a feedback here!

Thank you!

[nykolaslima]

Guys, I could not make this work with NewObject. Couldn't we merge it with Apache lib?

[Turini]

@nykolaslima sorry my delay. Before doing that I'll give a try to NewObject.

I'll be back with the result soon :)

[nykolaslima]

No problem. I'll wait for your response. Thank you!
On Tue, Mar 31, 2015 at 4:26 AM Rodrigo Turini [email protected]
wrote:

@nykolaslima https://github.com/nykolaslima sorry my delay. Before
doing that I'll give a try to NewObject.

I'll be back with the result soon :)

—
Reply to this email directly or view it on GitHub
#953 (comment).

[Turini]

@nykolaslima, You'll need to inject VRaptorInstantiator to provide it to the NewObject and create a new method on ParametersProvider that returns the br.com.caelum.iogi.parameters.Parameters (it already has a private method to do that). Your if will look like this:

if (existingValue == null) {
    valuedParameter.setValue(value);
} else {
    Parameters parameters = provider.getParameters(); // we will need to create this method
    NewObject newObject = new NewObject(instantiator, parameters, valuedParameter);
    valuedParameter.setValue(newObject.valueWithPropertiesSet());                   
}

What do you think? Did you tried something like that?

[garcia-jj]

I dislike to add beanutils because have too poor design (static methods that makes unit tests a nightmare), are too slow. And we already have a lib to work with reflection: Mirror. And there is a better way to write this feature using the @lucascs suggestion.