mapstruct/mapstruct-users

Tobias Liese

@SR-Lut3t1um

you probably are doing a PATCH operation with a collection, right?

Yes I do

ER-GAIBI

@ER-GAIBI

Hello, is there a way to ignore mapping all fileds except some specific fields ?

ER-GAIBI

@ER-GAIBI

I have to ignore many fields, should I put ignore = true for all fileds ? or there is an optimal way ?

ER-GAIBI

@ER-GAIBI

I found this solution :

@BeanMapping(ignoreByDefault = true)
    @Mapping(target = "id", source = "id")

Filip Hrisafov

@filiphr

Yes that is the solution that you can use

@BeanMapping(ignoreByDefault = true)

ER-GAIBI

@ER-GAIBI

Thanks

Eirches

@Eirches

Hello - I have a project where I am using MapStruct and Lombok together. So far the tool has been very powerful, but I think I have an odd question:

Is it possible to have the mapper return the builder itself rather than the result of .build()?

Filip Hrisafov

@filiphr

Yes the mapper can return the builder. You need to define the return type of your method to be the bulder

Eirches

@Eirches

@filiphr I did attempt that, but Lombok makes the constructor of the builder private and exposes access to an instance through SomeClass.builder().
MapStruct is capable of recognizing this when attempting to map to SomeClass, but when mapping to SomeClass.SomeClassBuilder the generated code attempts to create one directly resulting in an illegal access compilation failure.

Filip Hrisafov

@filiphr

You can always create a method with @ObjectFactory to provide an instance of the builder

Eirches

@Eirches

Side note - It appears that you also have to use Lombok's withPrefix = "set" on the builder in order to generate the correct mapping code. This is problematic because of an oversight in the Lombok project where they did not include this setting on the SuperBuilder annotation, and so it isn't a viable solution with objects using inheritance. Fortunately a PR is already merged and that will be addressed in the next release.

I'll give the ObjectFactory another shot. I'm guessing a may have misunderstood that annotation and it would fix my problem.

Filip Hrisafov

@filiphr

It should look something like

@ObjectFactory
default SomeClass.SomeClassBuilder createBuilder() {
    return SomeClass.builder();
}

Eirches

@Eirches

That looks like it works, thank you.

ER-GAIBI

@ER-GAIBI

@Mapping(target = "updateDate", expression = "java( transformUpdateDate(operation))")
    @Mapping(target = "simpleVarsRemaining", ignore = true)
    @Mapping(target = "operationEmmyListConditions", ignore = true)
    @Mapping(target = "ficheEmmiesRemaining", ignore = true)
    @Mapping(target = "creationDate", ignore = true)
    @Mapping(target = "editionDate", ignore = true)
    @Mapping(target = "ficheCalcul", ignore = true)
    @Mapping(target = "institution", ignore = true)
    @Mapping(target = "soustraitant", ignore = true)
    @Mapping(target = "inFolder", ignore = true)
    @Mapping(target = "isCpe", ignore = true)
    @Mapping(target = "cpe", ignore = true)
    @Mapping(target = "forfait", ignore = true)
    @Mapping(target = "precariteValue", ignore = true)
    @Mapping(target = "operationVolume", expression = "java(transformOperationVolume(operation.getOperationVolume()))")
    @Mapping(target = "installateur", expression = "java( transformInstallateur(operation.getInstallateur()))")
    @Mapping(target = "verificateur1", expression = "java( transformVerificateur(operation.getVerificateur1()))")
    @Mapping(target = "verificateur2", expression = "java( transformVerificateur(operation.getVerificateur2()))")
    @Mapping(target = "verificateur3", expression = "java( transformVerificateur(operation.getVerificateur3()))")
    @Mapping(target = "opportunity", expression = "java( transformOpportunity(operation.getOpportunity()))" )
    @Mapping(target = "fiche", expression = "java( operation.getFicheCalcul() != null ? " +
            "transformFiche(operation.getFicheCalcul().getFiche()) : null)")
    @Mapping(target = "instutitionName", expression = "java( operation.getInstitution() != null ? " +
            "operation.getInstitution().getSiteName() : null)")
    @Mapping(target = "daysSinceCreation", expression = "java(calculateDaysSInceCreation(operation.getCreationDate()))")
    OperationDTO toDisplayOperationDTO(Operation operation);

I metionned that mapstruct should map the field daysSinceCreation with the expression calculateDaysSInceCreation(Long creationDate)

Why mapstruct maps all field of type Long such as the ID field

default Long calculateDaysSInceCreation(Long creationDate){
        if (creationDate != null) {
            LocalDateTime dateOfCreation = LocalDateTime.ofInstant(Instant.ofEpochMilli(creationDate),
                    TimeZone.getDefault().toZoneId());
            LocalDateTime today = LocalDateTime.now();
            return Duration.between(dateOfCreation, today).toDays();
        } else {
            return null;
        }
    }

Here is the implementation :

@Override
    public OperationDTO toDisplayOperationDTO(Operation operation) {
        if ( operation == null ) {
            return null;
        }

        OperationDTO operationDTO = new OperationDTO();

        operationDTO.setId( calculateDaysSInceCreation( operation.getId() ) );
        operationDTO.setBillRef( operation.getBillRef() );
        operationDTO.setCanRegroup( operation.isCanRegroup() );
        operationDTO.setBeginDate( calculateDaysSInceCreation( operation.getBeginDate() ) );
        operationDTO.setEndDate( calculateDaysSInceCreation( operation.getEndDate() ) );
        operationDTO.setZni( operation.isZni() );
        operationDTO.setStatut( operation.getStatut() );
        if ( operation.getNatureDuRole() != null ) {
            operationDTO.setNatureDuRole( operation.getNatureDuRole().name() );
        }
        operationDTO.setBeneficiary( beneficiaryToBeneficiaryDto( operation.getBeneficiary() ) );
        operationDTO.setLot( operation.getLot() );
        operationDTO.setComment( operation.getComment() );
        operationDTO.setVerificationStatut( operation.getVerificationStatut() );
        operationDTO.setDeadlineForFiling( calculateDaysSInceCreation( operation.getDeadlineForFiling() ) );
        .....
        return operationDto;
}

As you can see, mapstruct use the calculateDaysSInceCreation(Long l) to map the id, begindate, enddate fields

ER-GAIBI

@ER-GAIBI

I changed the calculateDaysSInceCreation(Long l) to calculateDaysSInceCreation(Operation op), and it works good

default Long calculateDaysSInceCreation(Operation operation){
        if (operation.getCreationDate() != null) {
            LocalDateTime dateOfCreation = LocalDateTime.ofInstant(Instant.ofEpochMilli(operation.getCreationDate()),
                    TimeZone.getDefault().toZoneId());
            LocalDateTime today = LocalDateTime.now();
            return Duration.between(dateOfCreation, today).toDays();
        } else {
            return null;
        }
    }

Can any one explain this pls ?

Filip Hrisafov

@filiphr

If MapStruct finds a method between types that it can use it will use it. You by defining Long calculateDaysSInceCreation(Long) you are telling MapStruct use this method for mapping between longs

You need to look at qualifiers

btw all your mappings can be done without the needed of using an expression

ER-GAIBI

@ER-GAIBI

Thank you for your explinaintion, yes I agree that all mappings can be done without using expression

berryh

@berryh

Hello, I am trying out the new beta version of MapStruct (1.4.0.Beta2) and I'm running into what seems like a bug to me. I am using an interface which serves as a base definition for converting types and their list forms using generics. This used to work in MapStruct 1.3.1.Final, but doesn't compile in neither of the new beta versions. Can someone help me with this issue? Is there a change I should know about for example? I created a simple project to showcase this: https://github.com/berryh/Mapstruct140Beta2ListMapperInterfaceTest

santhosh117

@santhosh117

Hi all, I have nested DTO need to use mapstruct to field mapping

can one help to do

Filip Hrisafov

@filiphr

@berryh that should work looks pretty simple to me. Can you please raise and issue with the link to the project. It would be helpful to track it

@santhosh117 you'll need to provide more information

berryh

@berryh

@filiphr That's what I thought, but I wanted to make sure. I have created an issue: mapstruct/mapstruct#2153

Filip Hrisafov

@filiphr

Thanks

pranayd2693

@pranayd2693

Hi @filiphr , would like to know if mapstruct supports object to map mapping?

If it supports, someone can help with sample example?

Filip Hrisafov

@filiphr

Not yet. Have a look at mapstruct/mapstruct#1075

sh|Ook!

@SmashHouseOok_twitter

Hello! is it possible to use mapstruct to convert an array into members?
e.g, int numbers[] into number1 number2
@Mapping(target="number1, number2", source="numbers")

1 reply

TejasBhanushali

@TejasBhanushali

Hello Team,

Im using , CDI, JDK7 and wildfy 8.2 and Mapstruct 1.3.1 in my project where I'm getting below exception.

org.jboss.weld.exceptions.DeploymentException: WELD-001408: Unsatisfied dependencies for type SellerTypeEntityToSellerMapper with qualifiers @Labeled
at injection point [BackedAnnotatedField] @Inject @Labeled com.atulsia.instaseller.daoImpl.SellerDaoImpl.entityToSellerMapper
at com.atulsia.instaseller.daoImpl.SellerDaoImpl.entityToSellerMapper(SellerDaoImpl.java:0)

This is my mapper class:
@Mapper(componentModel = "cdi",injectionStrategy = InjectionStrategy.FIELD)
@Labeled("sellerEntityMapper")
public interface SellerTypeEntityToSellerMapper {

Seller sellerTypeEntityToSeller(SellerTypeEntity sellerTypeEntity);

}

Im using in RestService by @Inject:

1 reply

@Inject @Labeled("sellerEntityMapper") SellerTypeEntityToSellerMapper entityToSellerMapper;

Note: Labeled is our custome anotation

Please help me as im facing this issue since last 2 days.

uniQ

@aniq-pirzada

Hi,
Is it possible to provide a @Mapping(target = "A", source="sourceA, SourceB", qualifiedByName= "mapToA")

my mapToA function takes in 3 variables but i do not know how to pass them through using @Mapping

1 reply

samilazrak

@samilazrak

Hi,

I'm using in my SpringBoot project lombok annotations (version 1.18.10), and I am trying to make a proof of concept of MapStruct.
We use Lombok annotation @RequiredArgsConstructor(onConstructor = @_ _(@Inject)) for Dependency Injection (which is a mandatory requirement of the project).

But when I update my pom.xml to add MapStruct dependency, I get the following error when trying to run my code :

java : cannot find symbol
symbol : class

It works well when I use Spring field Injection @Inject but not with the Constructor Injection using Lombok's annotation.

Please could you help me figure out why.

Manav Bhanot

@manav-bhanot

Hello Team. Need some help here https://stackoverflow.com/questions/63200839/mapstruct-mapping-a-object-property-to-an-upper-level-object

Filip Hrisafov

@filiphr

@samilazrak which symbol cannot be found? How does the generated code look like? The Lombok annotation has nothing to do with the generated mappers

@manav-bhanot please look at my comment on your question. Don't use single letters for classes and fields. It is much easier to help when clear objects with names that we can relate to is used

Manav Bhanot

@manav-bhanot

@filiphr Thank you for your response. I've updated the code.

lw-mcno

@lw-mcno

Hello, I'm using CDI constructor-based injection and have an interface SomeMapper which uses = {DynamicMapper.class} - an another @ApplicationScoped bean providing some dynamic mapping methods, looking the data up in the "DB".

Would it be possible to "inject" a DynamicMapper instance into a default mapper-interface method without converting the mapper to an abstract class (I don't want to lose the composability of interfaces) and using constructor-injection there?

In other words, is it possible to access some method contained in DynamicMapper from SomeMapper? Passing it an method argument doesn't work and/or annotating @Context and @ObjectFactory don't seem appropriate here.

2 replies

sutapadey

@sutapadey

Hello, I'm using a older version of mapstruct 1.0.0.final with spring and jdk7. We write unit tests using jmockit. Is there a way to get/generate the impl class for mapstruct mappers in test scope?

6 replies

Al Grant

@bigal_nz_twitter

morning all

I have a DTO and want more than one source class

@Mapper(componentModel = "spring", uses = {TaskMapper.class})
public interface PlanMapper extends EntityMapper<PlanDTO, Plan> {

    @Mapping(target = "removeTask", ignore = true)
    Plan toEntity(PlanDTO planDTO);

    default Plan fromId(Long id) {
        if (id == null) {
            return null;
        }
        Plan plan = new Plan();
        plan.setId(id);
        return plan;
    }
}

1 reply

how would I do this

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