how to exclude whole property if they are null from Modelmapper

Question

Does ModelMapper(http://modelmapper.org/) support what exclude property? If the value is null.

I just found PropertyMap out. but It is a constraint to me. because I have to describe a specific property that I want.

Like this.

ModelMapper modelMapper = new ModelMapper();
modelMapper.addMappings(new PropertyMap<TestObject, TestObject>() {
    @Override
    protected void configure() {
        when(Conditions.isNull()).skip().setName(source.getName());
        when(Conditions.isNull()).skip().set...(source.get...());
        when(Conditions.isNull()).skip().set...(source.get...());
        when(Conditions.isNull()).skip().set...(source.get...());
        when(Conditions.isNull()).skip().set...(source.get...());
        when(Conditions.isNull()).skip().set...(source.get...());
    }
});

In my case, I have a lot of property and verbose. How to exclude mapping property if they are null from all them. Is there more comfortable solution?

thanks.

Suellen

Answer 1

You can configure ModelMapper to ignore all properties that are null with the following configuration:

modelMapper.getConfiguration().setPropertyCondition(Conditions.isNotNull());

It is useful, for example, for partial updates of a target object where you only want to copy those properties from the source object that are not null.

Acima

Thanks, That's I wanted. – Suellen

This isn't working for me idk why :( #56359927 – Pontius

I have int fields in my DTO/Entity. Since int can only be a zero, and cannot be null, is there a way to skip values that are equal to zero ? – Biquadrate

@Biquadrate you can use the Integer wrapper class instead of int primitive type – Witham

Is there any solution of int fields if they are coming from third party jar and can not be modified. – Shupe