BindingHelper should be applied only on matched types

[volnei]

When mapping a class level BindUsing with a BindingHelper the helper is applied on all attributes, even it no match the type of helper. This is unusual since restrict the use of the funcionality to near 0.

This problem occurs on any grails version.

The binging helper

package test

import grails.databinding.BindingHelper
import grails.databinding.DataBindingSource

import java.time.LocalDate
import java.time.format.DateTimeFormatter

class LocalDateBindingHelper implements BindingHelper<LocalDate> {

	private DateTimeFormatter formatter = DateTimeFormatter.ofPattern('dd/MM/yyyy')

	@Override
	LocalDate getPropertyValue(Object object, String propertyName, DataBindingSource source) {
		println object[propertyName]

		if (source[propertyName]) {
			return LocalDate.parse(source[propertyName], formatter)
		}
	}
}

The command to bind

@BindUsing(LocalDateBindingHelper)
class BindCommand {

	LocalDate localDate1 

	LocalDate localDate2

	Integer number 

}

The binding helper is trying to convert the number property.