attributeMetadata.getAttributeName() is not returning the field name on Inmutable Objects

[danipenaperez]

Using inmutable objects (only constructor +getters ) there is no simple way to use a AbstractTypeManufacturer implementation to detect the current fieldName (attributeMetadata.getAttributeName()) to customize value population.

If the Pojo Class does not contains a Setter method for a value the method attributeMetadata.getAttributeName() returns the index property at constructor (plus constructor used info).

Reproduce: Pojo inmutable class:

@Getter
@AllArgsConstructor
public class MyPojo {
    private Long id;
    private String name;
    private String observations;
}

Try to intercept the name field to customize

class CustomStringManufacturer extends StringTypeManufacturerImpl {

    private static final String FIELD_ID = "observations";

    @Override
    public String getType(final DataProviderStrategy strategy, final AttributeMetadata attributeMetadata,
                          final Map<String, Type> genericTypesArgumentsMap) {
        if (FIELD_ID.equals(attributeMetadata.getAttributeName())) {  //This fields never match
            return "MyCustomValue";
        }
        return super.getType(strategy, attributeMetadata, genericTypesArgumentsMap);
    };

}
....
....
//regsiter at factory
podamFactory.getStrategy().addOrReplaceTypeManufacturer(String.class, new CustomStringManufacturer());

The if clause never matchs because attributeMetadata.getAttributeName() returns:

2[class java.lang.Long, class java.lang.String, class java.lang.String]

[daivanov]

Hi,

Java doesn't store arguments names in java code, so there is no way we can match constructor arguments with fields. You have to match them by id or create a setter, or annotate constructor parameters.

Thanks, Daniil

[daivanov]

And even more to this, constructor argument names not necessary match names of the fields, especially if constructor is auto-generated like in your case.

Thanks, Daniil