CODEWITHSUNDEEP
spring-bootmapstructmapper
JavoHyperion
JavoHyperion

Reputation: 13

Map complex DTOs to Entity via Mapstruct

How can you effectively map a complex DTO that includes nested collections of objects to an entity in Spring Boot using the MapStruct library? I can map simple object, but what if I need to map this nested elements from collection?

I am using Kotlin and Springboot.

Some best practices?

Upvotes: 1

Views: 147

Answers (1)

Repkins
Repkins

Reputation: 145

you can use decorator on your mapper where you can call generated map function by MapStruct and extend result in your decorator.

Example:

  • Firstly create an abstract class:

    @DecoratedWith(NameOfYourDecorator::class) abstract class NameOfYourMapperDecorated : YourMapper

  • Create decorator and map list from DTO to list of your entity:

 open class BatchMapperDecorator : BatchMapperDecorated() { 
    // inject your mapper
    private var mapperProperty: YourMapper = 
    Mappers.getMapper(YourMapper::class.java)
        
    override fun mapMethod(source: DTO): YourEntity 
    {
        val result = mapperProperty.mapMethod(source)
        result.collection = source.collection.map { 
            … map logic … 
        }.toList()

        return result
}

Upvotes: 0

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