mapstruct 使用了错误的重载设置器

Question

I am using mapstruct 1.5.2. I try to map a SaveAccountDTO object into a AccountUpdateParams.Company object from the Stripe Java library. It uses the builder pattern.

The generated method uses the wrong overloaded method: the builder have a setter with String type and a second setter with the same name and a EmptyParam enum type:

public Builder setName(String name) {
    this.name = name;
    return this;
}

public Builder setName(EmptyParam name) {
    this.name = name;
    return this;
}

Mapstruct generates the following implementation:

AccountUpdateParams.Company.Builder company = com.stripe.param.AccountUpdateParams.Company.builder();

if ( value.getLegalName() != null ) {
    company.setName( Enum.valueOf( EmptyParam.class, value.getLegalName() ) );
}

But it is wrong as I would like to use the setName(String) setter:

company.setName( value.getLegalName() );

My mapping for this field is quite simple:

@Mapping(target = "name", source = "legalName")

Why does mapstruct choose to convert the input String into the enum to match the second setter? Is there any way to go for the String setter? I found no way to disable the implicit type conversion from the doc.

Answer 1

I don't know if this is the best solution, but since you ask for any way to solve the issue, you can ignore the property, and map it with a method annotated with @AfterMapping:

@Mapping(target = "name", ignore = true)
AccountUpdateParams.Company toCompany(SaveAccountDTO saveAccountDTO)

@AfterMapping
default void setNameFromLegalName(SaveAccountDTO saveAccountDTO, @MappingTarget AccountUpdateParams.Company company) {        
    company.setName( saveAccountDTO.getLegalName() );                  
}