CODEWITHSUNDEEP
intellij-ideajava-8mapstruct
Vivek Gupta
Vivek Gupta

Reputation: 2814

Mapping DTO with final members in MapStruct

is there a way to map a DTO using MatStruct which have a few final data members as well and cannot have a default constructor , like : 

public class TestDto {

    private final String testName;
    private int id;
    private String testCase;

    public TestDto(String testName) {
        this.testName = testName;
    }

    public String getTestName() {
        return testName;
    }

    public int getId() {
        return id;
    }

    public String getTestCase() {
        return testCase;
    }

    public void setId(int id) {
        this.id = id;
    }

    public void setTestCase(String testCase) {
        this.testCase = testCase;
    }
}

please suggest how could this DTO be mapped using MapStruct.

Upvotes: 1

Views: 2756

Answers (1)

Filip
Filip

Reputation: 21423

You can use @ObjectFactory that would construct an instance of your DTO.

For example:

@Mapper
public interface MyMapper {

    @ObjectFactory
    default TestDto create() {
        return new TestDto("My Test Name");
    }

    //the rest of the mappings
}

You can also enhance the @ObjectFactory to accept the source parameter, that you can use to construct the TestDto. You can even use a @Context as an Object Factory.

NB: You don't have to put the @ObjectFactory method in the same Mapper, or even a MapStruct @Mapper. You can put it in any class (or make it static) and then @Mapper(uses = MyFactory.class)

Upvotes: 3

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