mapstruct | An annotation processor for generating typesafe bean mappers | Build Tool library

by mapstruct Java Version: 1.5.0.RC1 License: Non-SPDX

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kandi X-RAY | mapstruct Summary

mapstruct is a Java library typically used in Utilities, Build Tool, Spring applications. mapstruct has no bugs, it has no vulnerabilities, it has build file available and it has high support. However mapstruct has a Non-SPDX License. You can download it from GitHub, Maven.

MapStruct is a Java annotation processor for the generation of type-safe and performant mappers for Java bean classes. It saves you from writing mapping code by hand, which is a tedious and error-prone task. The generator comes with sensible defaults and many built-in type conversions, but it steps out of your way when it comes to configuring or implementing special behavior.

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kandi-support Support

mapstruct has a highly active ecosystem.
It has 5053 star(s) with 704 fork(s). There are 129 watchers for this library.
There were 1 major release(s) in the last 6 months.
There are 321 open issues and 1529 have been closed. On average issues are closed in 117 days. There are 15 open pull requests and 0 closed requests.
It has a positive sentiment in the developer community.
The latest version of mapstruct is 1.5.0.RC1

mapstruct Support

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mapstruct Support

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quality kandi Quality

mapstruct has 0 bugs and 0 code smells.

mapstruct Quality

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security Security

mapstruct has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
mapstruct code analysis shows 0 unresolved vulnerabilities.
There are 0 security hotspots that need review.

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mapstruct Security

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license License

mapstruct has a Non-SPDX License.
Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

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build Reuse

mapstruct releases are available to install and integrate.
Deployable package is available in Maven.
Build file is available. You can build the component from source.
Installation instructions are not available. Examples and code snippets are available.
mapstruct saves you 88226 person hours of effort in developing the same functionality from scratch.
It has 103062 lines of code, 12501 functions and 3061 files.
It has low code complexity. Code complexity directly impacts maintainability of the code.

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Top functions reviewed by kandi - BETA

kandi has reviewed mapstruct and discovered the below as its top functions. This is intended to give you an instant insight into mapstruct implemented functionality, and help decide if they suit your requirements.

Gets the mappings from the given mapper annotation .
Check parameter and return type parameters .
Builds the RHS .
Initializes the map .
Apply the given options to the template .
Adds the instance .
Finds the matching method binding
Returns a map of property write accessors .
Get the final final method for a builder .
Entry point for debugging .

mapstruct Key Features

Fast execution by using plain method invocations instead of reflection

Compile-time type safety. Only objects and attributes mapping to each other can be mapped, so there's no accidental mapping of an order entity into a customer DTO, etc.

Self-contained code—no runtime dependencies

Clear error reports at build time if: mappings are incomplete (not all target properties are mapped) mappings are incorrect (cannot find a proper mapping method or type conversion)

Easily debuggable mapping code (or editable by hand—e.g. in case of a bug in the generator)

mapstruct Examples and Code Snippets

See all related Code Snippets

What is MapStruct?

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@Mapper
public interface CarMapper {

    CarMapper INSTANCE = Mappers.getMapper( CarMapper.class );

    @Mapping(target = "seatCount", source = "numberOfSeats")
    CarDto carToCarDto(Car car);
}

Maven

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...
&lt;properties&gt;
    &lt;org.mapstruct.version&gt;1.4.2.Final&lt;/org.mapstruct.version&gt;
&lt;/properties&gt;
...
&lt;dependencies&gt;
    &lt;dependency&gt;
        &lt;groupId&gt;org.mapstruct&lt;/groupId&gt;
        &lt;artifactId&gt;mapstruct&lt;/artifactId&gt;
        &lt;version&gt;${org.mapstruct.version}&lt;/version&gt;
    &lt;/dependency&gt;
&lt;/dependencies&gt;
...
&lt;build&gt;
    &lt;plugins&gt;
        &lt;plugin&gt;
            &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
            &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt;
            &lt;version&gt;3.8.1&lt;/version&gt;
            &lt;configuration&gt;
                &lt;source&gt;1.8&lt;/source&gt;
                &lt;target&gt;1.8&lt;/target&gt;
                &lt;annotationProcessorPaths&gt;
                    &lt;path&gt;
                        &lt;groupId&gt;org.mapstruct&lt;/groupId&gt;
                        &lt;artifactId&gt;mapstruct-processor&lt;/artifactId&gt;
                        &lt;version&gt;${org.mapstruct.version}&lt;/version&gt;
                    &lt;/path&gt;
                &lt;/annotationProcessorPaths&gt;
            &lt;/configuration&gt;
        &lt;/plugin&gt;
    &lt;/plugins&gt;
&lt;/build&gt;
...

Gradle

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plugins {
    ...
    id "com.diffplug.eclipse.apt" version "3.26.0" // Only for Eclipse
}

dependencies {
    ...
    compile 'org.mapstruct:mapstruct:1.4.2.Final'

    annotationProcessor 'org.mapstruct:mapstruct-processor:1.4.2.Final'
    testAnnotationProcessor 'org.mapstruct:mapstruct-processor:1.4.2.Final' // if you are using mapstruct in test code
}
...

Building from Source

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mvn clean install

Mapstruct - cannot find symbol [Kotlin + Maven]

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             <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <executions>
                    <!-- Replacing default-compile as it is treated specially by maven -->
                    <execution>
                        <id>default-compile</id>
                        <phase>none</phase>
                    </execution>
                    <!-- Replacing default-testCompile as it is treated specially by maven -->
                    <execution>
                        <id>default-testCompile</id>
                        <phase>none</phase>
                    </execution>
                    <execution>
                        <id>java-compile</id>
                        <phase>compile</phase>
                        <goals>
                            <goal>compile</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>java-test-compile</id>
                        <phase>test-compile</phase>
                        <goals>
                            <goal>testCompile</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>

Hwo can I convert from entity to dto with Null value in JPA

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private int score;

private Integer score;

-----------------------

private int score;

private Integer score;

Is asserting mocked object and method necessary in Unit Test(JUnit 5)?

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var pN = mock(ParamN.class);
// possibly stub some interactions with pN
var modelObject = new ModelObject(10, 20, pN);

var mockModelObject = mock(ModelObject.class); 
when(mockModelObject.getId()).thenReturn(10);

-----------------------

var pN = mock(ParamN.class);
// possibly stub some interactions with pN
var modelObject = new ModelObject(10, 20, pN);

var mockModelObject = mock(ModelObject.class); 
when(mockModelObject.getId()).thenReturn(10);

How to implement a partial custom mapping with MapStruct?

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@Mapper(componentModel = "cdi")
public interface MyMapper {

    @Mapping(target = "fieldRequiringCustomMapping", qualifiedByName = "customFieldMapping")
    MyDto toDTO(MyEntity myEntity);

    // The @(org.mapstruct.)Named is only needed if the Return and Target type are not unique
    @Named("customFieldMapping")
    default FieldRequiringCustomMapping customMapping(SourceForFieldRequiringCustomMapping source) {
        // Custom mapping here resulting in a Map<> map
        return map
    }
    
}

Calling javac the way Maven does

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stockapp-spring-boot (master)$ mvn clean compile 
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] stockapp-spring-boot                                               [pom]
[INFO] stockapp                                                           [jar]
[INFO] 
[INFO] -------------< it.raffaele.esposito:stockapp-spring-boot >--------------
[INFO] Building stockapp-spring-boot 1.2.2-SNAPSHOT                       [1/2]
[INFO] --------------------------------[ pom ]---------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ stockapp-spring-boot ---

 ...

[INFO] --- maven-resources-plugin:3.2.0:resources (default-resources) @ stockapp ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Using 'UTF-8' encoding to copy filtered properties files.
[INFO] Copying 14 resources
[INFO] The encoding used to copy filtered properties files have not been set. This means that the same encoding will be used to copy filtered properties files as when copying other filtered resources. This might not be what you want! Run your build with --debug to see which files might be affected. Read more at https://maven.apache.org/plugins/maven-resources-plugin/examples/filtering-properties-files.html
[INFO] 
[INFO] --- maven-resources-plugin:3.2.0:copy-resources (Copy Vue frontend into Spring Boot target static folder) @ stockapp ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Using 'UTF-8' encoding to copy filtered properties files.
[INFO] Copying 8 resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.7.0:compile (default-compile) @ stockapp ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 27 source files to stockapp-spring-boot/stockapp/target/classes
[INFO] stockapp-spring-boot/stockapp/src/main/java/it/raffaele/esposito/app/service/MappingFunctions.java: stockapp-spring-boot/stockapp/src/main/java/it/raffaele/esposito/app/service/MappingFunctions.java uses or overrides a deprecated API.
[INFO] stockapp-spring-boot/stockapp/src/main/java/it/raffaele/esposito/app/service/MappingFunctions.java: Recompile with -Xlint:deprecation for details.
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for stockapp-spring-boot 1.2.2-SNAPSHOT:
[INFO] 
[INFO] stockapp-spring-boot ............................... SUCCESS [  0.090 s]
[INFO] stockapp ........................................... SUCCESS [ 21.988 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  22.339 s
[INFO] Finished at: 2022-01-17T20:12:05+01:00
[INFO] ------------------------------------------------------------------------

Use another MapStruct mapper only inside an expression clause

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@Mapper(injectionStrategy = InjectionStrategy.CONSTRUCTOR, componentModel = "spring", uses = {TransactionMapper.class, EventMapper.class})
public abstract class GameMapper {

    @Autowired
    protected TransactionMapper transactionMapper;

    @Mapping(target = "transaction", 
        expression = "java(transactionMapper.transactionToDto(findTransactionForPlayer(game, idPlayer)))")
    public abstract GameResultDto gameToGameResultDto(Game game, Long idPlayer);

    // Some more methods

}

How to map from Model entity with list of Objects and one more Object to single Domain entity with Mapstruct

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    DomainUser UserToDUser(User user, CountryDetails countryDetails);

    default List<DomainUser> UsersToDomainUsers(List<User> users, CountryDetails countryDetails) {
        return users.stream()
                .map((user -> UserToDUser(user, countryDetails)))
                .collect(Collectors.toList());
    }

Mapper function null parameter check

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public class MapperImpl implements Mapper {
    public Target toTarget(SourceA sourceA, SourceB sourceB, SourceC sourceC){

        Target.Builder builder = Target.builder();
        // map objects
        return builder.builder();
    }
}

Convert List of Objects to List of Long IDs using Mapstruct

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@Mapper
public interface AMapper {
    
    @Mapping(source = "bs", target = "bIds", qualifiedByName = "bToId")
    public ADto aToADto(A a);
    
    @Named("bToId") 
    public static Long bToId(B b) { 
        return b.getId(); 
    }
}

-----------------------

public interface HasId {
  long getId();
}

@Builder
@Value
public class A implements HasId {
  long id;
  List<B> bs;
}


@Builder
@Value
public class B implements HasId {
  long id;
}

@Mapper
public class HasIdMapper {
  final long toId(HasId entity) {
    return entity.getId();
  }
}

@Builder
@Value
public class ADto {
  List<Long> bIds;
}

@Mapper(uses = HasIdMapper.class)
public interface AMapper {
  @Mapping(source = "bs", target = "bIds")
  ADto toDto(A entity);
}

  public static void main(String... args) {
    final A a = A.builder()
        .bs(List.of(
            B.builder().id(1).build(),
            B.builder().id(2).build(),
            B.builder().id(3).build()))
        .build();
    final ADto dto = Mappers.getMapper(AMapper.class).toDto(a);
    System.out.println(dto);
  }

ADto(bIds=[1, 2, 3])

-----------------------

public interface HasId {
  long getId();
}

@Builder
@Value
public class A implements HasId {
  long id;
  List<B> bs;
}


@Builder
@Value
public class B implements HasId {
  long id;
}

@Mapper
public class HasIdMapper {
  final long toId(HasId entity) {
    return entity.getId();
  }
}

@Builder
@Value
public class ADto {
  List<Long> bIds;
}

@Mapper(uses = HasIdMapper.class)
public interface AMapper {
  @Mapping(source = "bs", target = "bIds")
  ADto toDto(A entity);
}

  public static void main(String... args) {
    final A a = A.builder()
        .bs(List.of(
            B.builder().id(1).build(),
            B.builder().id(2).build(),
            B.builder().id(3).build()))
        .build();
    final ADto dto = Mappers.getMapper(AMapper.class).toDto(a);
    System.out.println(dto);
  }

ADto(bIds=[1, 2, 3])

-----------------------

public interface HasId {
  long getId();
}

@Builder
@Value
public class A implements HasId {
  long id;
  List<B> bs;
}


@Builder
@Value
public class B implements HasId {
  long id;
}

@Mapper
public class HasIdMapper {
  final long toId(HasId entity) {
    return entity.getId();
  }
}

@Builder
@Value
public class ADto {
  List<Long> bIds;
}

@Mapper(uses = HasIdMapper.class)
public interface AMapper {
  @Mapping(source = "bs", target = "bIds")
  ADto toDto(A entity);
}

  public static void main(String... args) {
    final A a = A.builder()
        .bs(List.of(
            B.builder().id(1).build(),
            B.builder().id(2).build(),
            B.builder().id(3).build()))
        .build();
    final ADto dto = Mappers.getMapper(AMapper.class).toDto(a);
    System.out.println(dto);
  }

ADto(bIds=[1, 2, 3])

-----------------------

public interface HasId {
  long getId();
}

@Builder
@Value
public class A implements HasId {
  long id;
  List<B> bs;
}


@Builder
@Value
public class B implements HasId {
  long id;
}

@Mapper
public class HasIdMapper {
  final long toId(HasId entity) {
    return entity.getId();
  }
}

@Builder
@Value
public class ADto {
  List<Long> bIds;
}

@Mapper(uses = HasIdMapper.class)
public interface AMapper {
  @Mapping(source = "bs", target = "bIds")
  ADto toDto(A entity);
}

  public static void main(String... args) {
    final A a = A.builder()
        .bs(List.of(
            B.builder().id(1).build(),
            B.builder().id(2).build(),
            B.builder().id(3).build()))
        .build();
    final ADto dto = Mappers.getMapper(AMapper.class).toDto(a);
    System.out.println(dto);
  }

ADto(bIds=[1, 2, 3])

-----------------------

public interface HasId {
  long getId();
}

@Builder
@Value
public class A implements HasId {
  long id;
  List<B> bs;
}


@Builder
@Value
public class B implements HasId {
  long id;
}

@Mapper
public class HasIdMapper {
  final long toId(HasId entity) {
    return entity.getId();
  }
}

@Builder
@Value
public class ADto {
  List<Long> bIds;
}

@Mapper(uses = HasIdMapper.class)
public interface AMapper {
  @Mapping(source = "bs", target = "bIds")
  ADto toDto(A entity);
}

  public static void main(String... args) {
    final A a = A.builder()
        .bs(List.of(
            B.builder().id(1).build(),
            B.builder().id(2).build(),
            B.builder().id(3).build()))
        .build();
    final ADto dto = Mappers.getMapper(AMapper.class).toDto(a);
    System.out.println(dto);
  }

ADto(bIds=[1, 2, 3])

-----------------------

public interface HasId {
  long getId();
}

@Builder
@Value
public class A implements HasId {
  long id;
  List<B> bs;
}


@Builder
@Value
public class B implements HasId {
  long id;
}

@Mapper
public class HasIdMapper {
  final long toId(HasId entity) {
    return entity.getId();
  }
}

@Builder
@Value
public class ADto {
  List<Long> bIds;
}

@Mapper(uses = HasIdMapper.class)
public interface AMapper {
  @Mapping(source = "bs", target = "bIds")
  ADto toDto(A entity);
}

  public static void main(String... args) {
    final A a = A.builder()
        .bs(List.of(
            B.builder().id(1).build(),
            B.builder().id(2).build(),
            B.builder().id(3).build()))
        .build();
    final ADto dto = Mappers.getMapper(AMapper.class).toDto(a);
    System.out.println(dto);
  }

ADto(bIds=[1, 2, 3])

MapStruct Java: property to list

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@Mapper
public interface ResultTypeToProvinciaMapper {
    
    ResultTypeToProvinciaMapper INSTANCE = Mappers.getMapper(ResultTypeToProvinciaMapper.class);
    

    default List<Provincia> resultSetToListOfProvincia(ResultSetType resultSetType) {
        if (resultSetType == null) {
            return null;
        }

        Results results = resultSetType.getResults();

        if (results == null) {
            return null;
        }
        return resultTypesToProvincias(results.getResult());
    }


    List<Provincia> resultTypesToProvincias(List<ResultType> resultTypes);

    @Mapping(source = "id", target = "code")
    @Mapping(source = "description", target = "name")
    Provincia resultTypeToProvincia(ResultType resultType);

}

See all related Code Snippets

Community Discussions

Trending Discussions on mapstruct

Mapstruct - cannot find symbol [Kotlin + Maven]
Hwo can I convert from entity to dto with Null value in JPA
Is asserting mocked object and method necessary in Unit Test(JUnit 5)?
Mapper is not using another mapper, how to use a mapper from another mapper?
@SubclassMapping order
MapStruct dependency scope in a Maven project
How to implement a partial custom mapping with MapStruct?
Calling javac the way Maven does
Use another MapStruct mapper only inside an expression clause
How to map from Model entity with list of Objects and one more Object to single Domain entity with Mapstruct

Trending Discussions on mapstruct

QUESTION

Mapstruct - cannot find symbol [Kotlin + Maven]

Asked 2022-Mar-30 at 01:32

I'm having the following error when I run the command mvn clean install:

[ERROR] /Users/xxx/xxx/xxx/xxx.xxx/target/generated-sources/kapt/compile/com/xxx/xxx/xxx/xxx/DataMapperImpl.java:[10,40] cannot find symbol
[ERROR]   symbol: class DataMapperDecorator
[ERROR] /Users/xxx/xxx/xxx/xxx.xxx/target/generated-sources/kapt/compile/com/xxx/xxx/xxx/xxx/DataMapperImpl.java:[10,74] cannot find symbol
[ERROR]   symbol: class DataMapper
[ERROR] /Users/xxx/xxx/xxx/xxx.xxx/xxx/generated-sources/kapt/compile/com/xxx/xxx/xxx/api/DataMapperImpl.java:[12,19] cannot find symbol
[ERROR]   symbol:   class DataMapper
[ERROR]   location: class com.xxx.xxx.xxx.xxx.DataMapperImpl

It seems that after mapstruct has generated the DataMapperImpl.java class it is not able to find the classes DataMapper and DataMapperDecoretor.

The code related to mapstruct is in a xxx.kt file:

//Other stuff
...

@Mapper
@DecoratedWith(DataMapperDecorator::class)
interface DataMapper {
    @Mappings(
        Mapping(source = "data.value", target = "dataValue"),
        Mapping(source = "data.current.value", target = "currentValue"),
    )
    fun toDto(data: Data) : RefDataDto
}

abstract class DataMapperDecorator : DataMapper {
    @Autowired
    private val delegate: DataMapper? = null

    override fun toDto(data: Data): dataDto {
        val dataDto = delegate!!.toDto(data)
        dataDto.primaryValue = data.primaryValue?.let { CurrencyUtil.toMajor(it) }
        return dataDto
    }
}

Regarding the pom files I have in the root file:

...
    <properties>
    ... 
        <org.mapstruct.version>1.4.2.Final</org.mapstruct.version>
    </properties>
...

and this is the pom of the module where I'm using mapstruct:

...
        <build>
            <finalName>${project.artifactId}</finalName>
            <plugins>
                <plugin>
                    <groupId>org.jetbrains.kotlin</groupId>
                    <artifactId>kotlin-maven-plugin</artifactId>
                    <executions>
                        <execution>
                            <id>compile</id>
                            <phase>compile</phase>
                            <goals>
                                <goal>compile</goal>
                            </goals>
                            <configuration>
                                <sourceDirs>
                                    <sourceDir>src/main/kotlin</sourceDir>
                                </sourceDirs>
                            </configuration>
                        </execution>
                        <execution>
                            <id>test-compile</id>
                            <goals>
                                <goal>test-compile</goal>
                            </goals>
                        </execution>
                        <execution>
                            <id>kapt</id>
                            <goals>
                                <goal>kapt</goal>
                            </goals>
                            <configuration>
                                <annotationProcessorPaths>
                                    <annotationProcessorPath>
                                        <groupId>org.mapstruct</groupId>
                                        <artifactId>mapstruct-processor</artifactId>
                                        <version>${org.mapstruct.version}</version>
                                    </annotationProcessorPath>
                                </annotationProcessorPaths>
                            </configuration>
                        </execution>
                    </executions>
                </plugin>
                ...
            </plugins>
...

I hid some part of the files with dots and I'm not using the project Lombok (I saw same problems related with it we you are trying to use these projects together).

UPDATE 1:

I noticed that the error is related to the fact that from the generated class DataMapperImpl.java the package where there are the classes that this generated class should use is not visible. Indeed I see this error:

[ERROR] /Users/xxx/xxx/xxx/xxx.xxx/xxx/generated-sources/kapt/compile/com/xxx/xxx/xxx/xxx/RefDataMapperImpl.java:[3,47] package com.my.package.application.domain does not exist

and of course this package exist!

UPDATE 2:

I'm continuing to investigate on this issue. I tried to make it simpler deleting the DataMapperDecorator and put the DataMapper, the Data and the DataDto class in the same file. Still the same error cannot find symbol: class for all the three classes. I'm not sure if this is related to the fact that in the DataMapperImpl (the generated class) doesn't have the import of these classes. There are imports just for the standard java libraries such as:

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.UUID;
import javax.annotation.processing.Generated;

EDIT 1:

From the log I can also see the following warning:

[WARNING] 'tools.jar' was not found, kapt may work unreliably

UPDATE 3:

Without mapstruct under target->classes (using IntelliJ IDEA) I can see the classes of my project. On the other hand when I have introduced mapstruct what I'm seeing is that the mapstruct classes are generated under target->generated-sources->kapt->compile but under target->classes I don't see the other classes. Could the mapstruct classes be generated earlier than the other classes of my project causing the compiler to not find the Data, DataDto classes?

ANSWER

Answered 2021-Aug-17 at 17:20

I am not sure how Kotlin works with multiple classes in one source file.

What I would suggest is that you use dedicated files for the decorator and the mapper. That way MapStruct will create the correct code.

MapStruct is a Java annotation processor, we do not know anything about the Kotlin structure. It seems like the packages returned by the java annotation processing API are not correct.

Source https://stackoverflow.com/questions/68819675

QUESTION

Is asserting mocked object and method necessary in Unit Test(JUnit 5)?

Asked 2022-Mar-14 at 09:34

I'm still a basic learner for Unit Test.

I'm trying to mock my class's method without directly calling it(since it is dependent on 3rd party library) and I wrote a test method like below.

(The 3rd party library which I mentioned is not MapStruct, it is ModelObject.class and it has very complicated parameters for the constructor and is only available to initialize in library level)

The ProjectMapper class's toDto method is a simple object mapping method(with MapStruct library).

@Test
@DisplayName("Should convert Project ModelObject to Project DTO successfully.")
void testProjectModelObjectToDtoSucess() {
    // Given 
    ModelObject mockModelObject = mock(ModelObject.class); // <-- Mocking "ModelObject.class" 

    ProjectDto expected = new ProjectDto("PPJT-00000001", "Test Project 01"); // <-- Initializing expected return object.

    when(mockProjectMapper.toDto(mockModelObject)).thenReturn(expected); // <-- Mocking cut(class under test)'s method. 

    // When 
    ProjectDto actual = mockProjectMapper.toDto(mockModelObject); // <-- Calling mocked method. 

    // Then 
    assertEquals(actual.getId(), expected.getId(), "The converted DTO's ID should equal to expected DTO's ID.");
    assertEquals(actual.getName(), expected.getName(), "The converted DTO's name should equal to expected DTO's name.");
}

What I want to know is if I already assume mockProjectMapper.toDto() will return exactly equaled expected object, why would I need to assert with the actual(returned) object?

I learned that Unit Test should test any codes which can be breakable.

I doubt what's the benefit of this way of the test and if it's inappropriate, what's the correct way to test this method with mocking?

I referenced this test method from this example code.

@refael-sheinker Here's the source code of the ProjectMapper class which is MapStruct's interface class.

@Mapper
public interface ProjectMapper {
    ProjectMapper INSTANCE = Mappers.getMapper(ProjectMapper.class);

    @Mapping(target = "id", source = "projectId")
    @Mapping(target = "name", source = "projectName")
    ProjectDto toDto(ModelObject modelObject);
}

ANSWER

Answered 2022-Mar-14 at 09:34

You mocked your object under test and stubbed method under test - and you correctly concuded that such a test brings no benefit.

You are checking that you can stub a method, not your production code.

The main problem is your assumption that you need to mock every 3rd party class. This is wrong way of thinking - you should try to mock collaborators of your class (especially ones that cause side-effects unwanted in the test environment), but not the classes which are critical part of implementation of your class. The line might be sometimes blurry, but in this concrete example I strongly recommend NOT mocking the mapper:

your 3rd party class is driven by annotations
the annotations must correspond to your DTOs fields
the field names in annotations are Strings, their presence is DTOs is not enforced by compiler
all mapping is done in the memory

Creating a test that exercises production code gives you confidence that:

field names are correct
corresponding mapped fields have correct types (for example, you are not mapping int to boolean)

The linked test of the service is somewhat different: it tests a Spring service which calls the repository. The repository presumably represents some DB, which interacts with the outside world - it is a good candidate for a mock. To my eyes the service method only forwards the call to the repository - which is a trivial behaviour - so the test is trivial, but this setup will scale for more complicated service methods.

Update

Mocking source class for MapStruct.

If ModelObject is complicated to create, consider using mocks for some of its constructor parameters.

var pN = mock(ParamN.class);
// possibly stub some interactions with pN
var modelObject = new ModelObject(10, 20, pN);

Alternatively, you could even mock entire ModelObect and stub its getters:

var mockModelObject = mock(ModelObject.class); 
when(mockModelObject.getId()).thenReturn(10);

Source https://stackoverflow.com/questions/71463565

QUESTION

MapStruct dependency scope in a Maven project

Asked 2022-Feb-12 at 08:23

MapStruct generates code at compile-time and it should not require any runtime dependencies:

How is MapStruct different from other bean mapping tools?

Unlike most other bean mapping tools, MapStruct doesn’t work at runtime but is a compile-time code generator.

Generating mapping code at build time has many advantages:

Excellent performance, as no reflection or byte code generation at runtime is needed; the generated code contains plain method invocations, just as if the mapper was hand-written

No runtime dependencies, making MapStruct a great solution for Android applications

Which dependency scope should be used in a Maven project? Should MapStruct be included as a provided dependency?

<dependencies>
    <dependency>
        <groupId>org.mapstruct</groupId>
        <artifactId>mapstruct</artifactId>
        <version>${org.mapstruct.version}</version>
        <scope>provided</scope>
    </dependency>
</dependencies>

ANSWER

Answered 2022-Feb-12 at 08:23

The org.mapstruct:mapstruct dependency contains the needed annotations to signal the org.mapstruct:mapstruct-processor what to do.

It also contains the Mappers factory that is used when using the default component model. Therefore, the scope of org.mapstruct:mapstruct depends on the component model that you are using:

Default component model

If you are using this component model then you need org.mapstruct:mapstruct during runtime if you are using Mappers or if you have dependencies between different mappers.

In theory you can use the default component model and instantiate your own mappers. However, dependencies between mappers are still going to use Mappers, unless you have instantiated your mapper in MyMapper.INSTANCE somehow already, then MapStruct will use MyMapper.INSTANCE to get the instance of the MyMapper. This would mean that you can still use the same scope as the other component models (see below for more information)

Other component model (spring, jsr330, cdi, etc.)

In this case you do not need org.mapstruct:mapstruct during runtime and you can use <optional>true</optional> with <scope>provided</scope>.

With Gradle this would be compileOnly dependency.

Note: Be careful when using Spring Boot and <scope>provided</scope> the Spring Boot maven plugin will still include the org.mapstruct:mapstruct dependency in the final provided jar. You'll need to ignore it by configuring the Spring Boot Maven plugin.

Source https://stackoverflow.com/questions/71081353

QUESTION

How to implement a partial custom mapping with MapStruct?

Asked 2022-Feb-04 at 22:38

I would like MapStruct to map every property of my Object, except for one particular one for which I would like to provide a custom mapping.

So far, I implemented the whole mapper myself, but every time I add a new property to my Entity, I forget to update the mapper.

@Mapper(componentModel = "cdi")
public interface MyMapper {
    MyMapper INSTANCE = Mappers.getMapper(MyMapper.class);

    default MyDto toDTO(MyEntity myEntity){
        MyDto dto = new MyDto();
        dto.field1 = myEntity.field1;
        // [...]
        dto.fieldN = myEntity.fieldN;

        // Custom mapping here resulting in a Map<> map
        dto.fieldRequiringCustomMapping = map;

    }
}

Is there a way to outsource the mapping for my field fieldRequiringCustomMapping and tell MapStruct to map all the other ones like usual? 🤔

ANSWER

Answered 2021-Oct-19 at 18:15

MapStruct has a way to use custom mapping between some fields. So in your case you can do someting like:

@Mapper(componentModel = "cdi")
public interface MyMapper {

    @Mapping(target = "fieldRequiringCustomMapping", qualifiedByName = "customFieldMapping")
    MyDto toDTO(MyEntity myEntity);

    // The @(org.mapstruct.)Named is only needed if the Return and Target type are not unique
    @Named("customFieldMapping")
    default FieldRequiringCustomMapping customMapping(SourceForFieldRequiringCustomMapping source) {
        // Custom mapping here resulting in a Map<> map
        return map
    }
    
}

I do not know from what your fieldRequiringCustomMapping needs to be mapped, the example assumes that you have such a field in MyEntity as well, if that is not the case you'll need to add source to the @Mapping.

Side Note: When using a non default componentModel in your case cdi it is not recommended to use the Mappers factory. It will not perform the injection of other mappers in case you use them in a mapper.

Source https://stackoverflow.com/questions/69618836

QUESTION

Calling javac the way Maven does

Asked 2022-Jan-17 at 19:13

Calling mvn clean compile -X

shows the following (few dependencies omitted to stay in question max char size):

[DEBUG]   (f) compileSourceRoots = [/Users/u/Desktop/java_dev/projects/stockapp-spring-boot/stockapp/src/main/java]
[DEBUG]   (f) compilerId = javac
[DEBUG]   (f) debug = true
[DEBUG]   (f) encoding = UTF-8
[DEBUG]   (f) failOnError = true
[DEBUG]   (f) failOnWarning = false
[DEBUG]   (f) forceJavacCompilerUse = false
[DEBUG]   (f) fork = false
[DEBUG]   (f) generatedSourcesDirectory = /Users/u/Desktop/java_dev/projects/stockapp-spring-boot/stockapp/target/generated-sources/annotations
[DEBUG]   (f) mojoExecution = org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile {execution: default-compile}
[DEBUG]   (f) optimize = false
[DEBUG]   (f) outputDirectory = /Users/u/Desktop/java_dev/projects/stockapp-spring-boot/stockapp/target/classes
[DEBUG]   (f) parameters = false
[DEBUG]   (f) project = MavenProject: it.u1.u2:stockapp:1.2.2-SNAPSHOT @ /Users/u/Desktop/java_dev/projects/stockapp-spring-boot/stockapp/pom.xml
[DEBUG]   (f) projectArtifact = it.u1.u2:stockapp:jar:1.2.2-SNAPSHOT
[DEBUG]   (f) session = org.apache.maven.execution.MavenSession@633a2e99
[DEBUG]   (f) showDeprecation = false
[DEBUG]   (f) showWarnings = false
[DEBUG]   (f) skipMultiThreadWarning = false
[DEBUG]   (f) source = 11
[DEBUG]   (f) staleMillis = 0
[DEBUG]   (s) target = 11
[DEBUG]   (f) useIncrementalCompilation = true
[DEBUG]   (f) verbose = false
[DEBUG] -- end configuration --
[DEBUG] Using compiler 'javac'.

and also

[DEBUG] Command line options:
[DEBUG] -d /Users/u/Desktop/java_dev/projects/stockapp-spring-boot/stockapp/target/classes -classpath /Users/u/Desktop/java_dev/projects/stockapp-spring-boot/stockapp/target/classes:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-web/2.6.2/spring-boot-starter-web-2.6.2.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter/2.6.2/spring-boot-starter-2.6.2.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot/2.6.2/spring-boot-2.6.2.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-autoconfigure/2.6.2/spring-boot-autoconfigure-2.6.2.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-logging/2.6.2/spring-boot-starter-logging-2.6.2.jar:/Users/u/.m2/repository/ch/qos/logback/logback-classic/1.2.9/logback-classic-1.2.9.jar:/Users/u/.m2/repository/ch/qos/logback/logback-core/1.2.9/logback-core-1.2.9.jar:/Users/u/.m2/repository/org/apache/logging/log4j/log4j-to-slf4j/2.17.0/log4j-to-slf4j-2.17.0.jar:/Users/u/.m2/repository/org/apache/logging/log4j/log4j-api/2.17.0/log4j-api-2.17.0.jar:/Users/u/.m2/repository/org/slf4j/jul-to-slf4j/1.7.32/jul-to-slf4j-1.7.32.jar:/Users/u/.m2/repository/jakarta/annotation/jakarta.annotation-api/1.3.5/jakarta.annotation-api-1.3.5.jar:/Users/u/.m2/repository/org/yaml/snakeyaml/1.29/snakeyaml-1.29.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-json/2.6.2/spring-boot-starter-json-2.6.2.jar:/Users/u/.m2/repository/com/fasterxml/jackson/datatype/jackson-datatype-jdk8/2.13.1/jackson-datatype-jdk8-2.13.1.jar:/Users/u/.m2/repository/com/fasterxml/jackson/datatype/jackson-datatype-jsr310/2.13.1/jackson-datatype-jsr310-2.13.1.jar:/Users/u/.m2/repository/com/fasterxml/jackson/module/jackson-module-parameter-names/2.13.1/jackson-module-parameter-names-2.13.1.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-tomcat/2.6.2/spring-boot-starter-tomcat-2.6.2.jar:/Users/u/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/9.0.56/tomcat-embed-core-9.0.56.jar:/Users/u/.m2/repository/org/apache/tomcat/embed/tomcat-embed-websocket/9.0.56/tomcat-embed-websocket-9.0.56.jar:/Users/u/.m2/repository/org/springframework/spring-web/5.3.14/spring-web-5.3.14.jar:/Users/u/.m2/repository/org/springframework/spring-beans/5.3.14/spring-beans-5.3.14.jar:/Users/u/.m2/repository/org/springframework/spring-webmvc/5.3.14/spring-webmvc-5.3.14.jar:/Users/u/.m2/repository/org/springframework/spring-context/5.3.14/spring-context-5.3.14.jar:/Users/u/.m2/repository/org/springframework/spring-expression/5.3.14/spring-expression-5.3.14.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-security/2.6.2/spring-boot-starter-security-2.6.2.jar:/Users/u/.m2/repository/org/springframework/spring-aop/5.3.14/spring-aop-5.3.14.jar:/Users/u/.m2/repository/org/springframework/security/spring-security-config/5.6.1/spring-security-config-5.6.1.jar:/Users/u/.m2/repository/org/springframework/security/spring-security-core/5.6.1/spring-security-core-5.6.1.jar:/Users/u/.m2/repository/org/springframework/security/spring-security-crypto/5.6.1/spring-security-crypto-5.6.1.jar:/Users/u/.m2/repository/org/springframework/security/spring-security-web/5.6.1/spring-security-web-5.6.1.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-data-jpa/2.6.2/spring-boot-starter-data-jpa-2.6.2.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-aop/2.6.2/spring-boot-starter-aop-2.6.2.jar:/Users/u/.m2/repository/org/aspectj/aspectjweaver/1.9.7/aspectjweaver-1.9.7.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-jdbc/2.6.2/spring-boot-starter-jdbc-2.6.2.jar:/Users/u/.m2/repository/com/zaxxer/HikariCP/4.0.3/HikariCP-4.0.3.jar:/Users/u/.m2/repository/org/springframework/spring-jdbc/5.3.14/spring-jdbc-5.3.14.jar:/Users/u/.m2/repository/org/springframework/data/spring-data-jpa/2.6.0/spring-data-jpa-2.6.0.jar:/Users/u/.m2/repository/org/springframework/data/spring-data-commons/2.6.0/spring-data-commons-2.6.0.jar:/Users/u/.m2/repository/org/springframework/spring-orm/5.3.14/spring-orm-5.3.14.jar:/Users/u/.m2/repository/org/springframework/spring-tx/5.3.14/spring-tx-5.3.14.jar:/Users/u/.m2/repository/org/slf4j/slf4j-api/1.7.32/slf4j-api-1.7.32.jar:/Users/u/.m2/repository/org/springframework/spring-aspects/5.3.14/spring-aspects-5.3.14.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-validation/2.6.2/spring-boot-starter-validation-2.6.2.jar:/Users/u/.m2/repository/org/apache/tomcat/embed/tomcat-embed-el/9.0.56/tomcat-embed-el-9.0.56.jar:/Users/u/.m2/repository/org/hibernate/validator/hibernate-validator/6.2.0.Final/hibernate-validator-6.2.0.Final.jar:/Users/u/.m2/repository/jakarta/validation/jakarta.validation-api/2.0.2/jakarta.validation-api-2.0.2.jar:/Users/u/.m2/repository/org/liquibase/liquibase-core/4.5.0/liquibase-core-4.5.0.jar:/Users/u/.m2/repository/javax/xml/bind/jaxb-api/2.3.1/jaxb-api-2.3.1.jar:/Users/u/.m2/repository/javax/activation/javax.activation-api/1.2.0/javax.activation-api-1.2.0.jar:/Users/u/.m2/repository/com/fasterxml/jackson/module/jackson-module-jaxb-annotations/2.13.1/jackson-module-jaxb-annotations-2.13.1.jar:/Users/u/.m2/repository/com/fasterxml/jackson/core/jackson-annotations/2.13.1/jackson-annotations-2.13.1.jar:/Users/u/.m2/repository/com/fasterxml/jackson/core/jackson-core/2.13.1/jackson-core-2.13.1.jar:/Users/u/.m2/repository/com/fasterxml/jackson/core/jackson-databind/2.13.1/jackson-databind-2.13.1.jar:/Users/u/.m2/repository/jakarta/xml/bind/jakarta.xml.bind-api/2.3.3/jakarta.xml.bind-api-2.3.3.jar:/Users/u/.m2/repository/jakarta/activation/jakarta.activation-api/1.2.2/jakarta.activation-api-1.2.2.jar:/Users/u/.m2/repository/org/springframework/spring-core/5.3.14/spring-core-5.3.14.jar:/Users/u/.m2/repository/org/springframework/spring-jcl/5.3.14/spring-jcl-5.3.14.jar:/Users/u/.m2/repository/org/projectlombok/lombok/1.18.22/lombok-1.18.22.jar:/Users/u/.m2/repository/org/mapstruct/mapstruct-processor/1.3.1.Final/mapstruct-processor-1.3.1.Final.jar:/Users/u/.m2/repository/org/mapstruct/mapstruct/1.3.1.Final/mapstruct-1.3.1.Final.jar: -sourcepath /Users/u/Desktop/java_dev/projects/stockapp-spring-boot/stockapp/src/main/java:/Users/u/Desktop/java_dev/projects/stockapp-spring-boot/stockapp/target/generated-sources/annotations: -s /Users/u/Desktop/java_dev/projects/stockapp-spring-boot/stockapp/target/generated-sources/annotations -g -nowarn -target 11 -source 11 -encoding UTF-8

So I was under the impression that Maven makes this call using javac:

javac -d /Users/u/Desktop/java_dev/projects/stockapp-spring-boot/stockapp/target/classes -classpath /Users/u/Desktop/java_dev/projects/stockapp-spring-boot/stockapp/target/classes:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-web/2.6.2/spring-boot-starter-web-2.6.2.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter/2.6.2/spring-boot-starter-2.6.2.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot/2.6.2/spring-boot-2.6.2.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-autoconfigure/2.6.2/spring-boot-autoconfigure-2.6.2.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-logging/2.6.2/spring-boot-starter-logging-2.6.2.jar:/Users/u/.m2/repository/ch/qos/logback/logback-classic/1.2.9/logback-classic-1.2.9.jar:/Users/u/.m2/repository/ch/qos/logback/logback-core/1.2.9/logback-core-1.2.9.jar:/Users/u/.m2/repository/org/apache/logging/log4j/log4j-to-slf4j/2.17.0/log4j-to-slf4j-2.17.0.jar:/Users/u/.m2/repository/org/apache/logging/log4j/log4j-api/2.17.0/log4j-api-2.17.0.jar:/Users/u/.m2/repository/org/slf4j/jul-to-slf4j/1.7.32/jul-to-slf4j-1.7.32.jar:/Users/u/.m2/repository/jakarta/annotation/jakarta.annotation-api/1.3.5/jakarta.annotation-api-1.3.5.jar:/Users/u/.m2/repository/org/yaml/snakeyaml/1.29/snakeyaml-1.29.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-json/2.6.2/spring-boot-starter-json-2.6.2.jar:/Users/u/.m2/repository/com/fasterxml/jackson/datatype/jackson-datatype-jdk8/2.13.1/jackson-datatype-jdk8-2.13.1.jar:/Users/u/.m2/repository/com/fasterxml/jackson/datatype/jackson-datatype-jsr310/2.13.1/jackson-datatype-jsr310-2.13.1.jar:/Users/u/.m2/repository/com/fasterxml/jackson/module/jackson-module-parameter-names/2.13.1/jackson-module-parameter-names-2.13.1.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-tomcat/2.6.2/spring-boot-starter-tomcat-2.6.2.jar:/Users/u/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/9.0.56/tomcat-embed-core-9.0.56.jar:/Users/u/.m2/repository/org/apache/tomcat/embed/tomcat-embed-websocket/9.0.56/tomcat-embed-websocket-9.0.56.jar:/Users/u/.m2/repository/org/springframework/spring-web/5.3.14/spring-web-5.3.14.jar:/Users/u/.m2/repository/org/springframework/spring-beans/5.3.14/spring-beans-5.3.14.jar:/Users/u/.m2/repository/org/springframework/spring-webmvc/5.3.14/spring-webmvc-5.3.14.jar:/Users/u/.m2/repository/org/springframework/spring-context/5.3.14/spring-context-5.3.14.jar:/Users/u/.m2/repository/org/springframework/spring-expression/5.3.14/spring-expression-5.3.14.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-security/2.6.2/spring-boot-starter-security-2.6.2.jar:/Users/u/.m2/repository/org/springframework/spring-aop/5.3.14/spring-aop-5.3.14.jar:/Users/u/.m2/repository/org/springframework/security/spring-security-config/5.6.1/spring-security-config-5.6.1.jar:/Users/u/.m2/repository/org/springframework/security/spring-security-core/5.6.1/spring-security-core-5.6.1.jar:/Users/u/.m2/repository/org/springframework/security/spring-security-crypto/5.6.1/spring-security-crypto-5.6.1.jar:/Users/u/.m2/repository/org/springframework/security/spring-security-web/5.6.1/spring-security-web-5.6.1.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-data-jpa/2.6.2/spring-boot-starter-data-jpa-2.6.2.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-aop/2.6.2/spring-boot-starter-aop-2.6.2.jar:/Users/u/.m2/repository/org/aspectj/aspectjweaver/1.9.7/aspectjweaver-1.9.7.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-jdbc/2.6.2/spring-boot-starter-jdbc-2.6.2.jar:/Users/u/.m2/repository/com/zaxxer/HikariCP/4.0.3/HikariCP-4.0.3.jar:/Users/u/.m2/repository/org/springframework/spring-jdbc/5.3.14/spring-jdbc-5.3.14.jar:/Users/u/.m2/repository/jakarta/transaction/jakarta.transaction-api/1.3.3/jakarta.transaction-api-1.3.3.jar:/Users/u/.m2/repository/jakarta/persistence/jakarta.persistence-api/2.2.3/jakarta.persistence-api-2.2.3.jar:/Users/u/.m2/repository/org/hibernate/hibernate-core/5.6.3.Final/hibernate-core-5.6.3.Final.jar:/Users/u/.m2/repository/org/jboss/logging/jboss-logging/3.4.2.Final/jboss-logging-3.4.2.Final.jar:/Users/u/.m2/repository/net/bytebuddy/byte-buddy/1.11.22/byte-buddy-1.11.22.jar:/Users/u/.m2/repository/antlr/antlr/2.7.7/antlr-2.7.7.jar:/Users/u/.m2/repository/org/jboss/jandex/2.2.3.Final/jandex-2.2.3.Final.jar:/Users/u/.m2/repository/com/fasterxml/classmate/1.5.1/classmate-1.5.1.jar:/Users/u/.m2/repository/org/hibernate/common/hibernate-commons-annotations/5.1.2.Final/hibernate-commons-annotations-5.1.2.Final.jar:/Users/u/.m2/repository/org/glassfish/jaxb/jaxb-runtime/2.3.5/jaxb-runtime-2.3.5.jar:/Users/u/.m2/repository/org/glassfish/jaxb/txw2/2.3.5/txw2-2.3.5.jar:/Users/u/.m2/repository/com/sun/istack/istack-commons-runtime/3.0.12/istack-commons-runtime-3.0.12.jar:/Users/u/.m2/repository/org/springframework/data/spring-data-jpa/2.6.0/spring-data-jpa-2.6.0.jar:/Users/u/.m2/repository/org/springframework/data/spring-data-commons/2.6.0/spring-data-commons-2.6.0.jar:/Users/u/.m2/repository/org/springframework/spring-orm/5.3.14/spring-orm-5.3.14.jar:/Users/u/.m2/repository/org/springframework/spring-tx/5.3.14/spring-tx-5.3.14.jar:/Users/u/.m2/repository/org/slf4j/slf4j-api/1.7.32/slf4j-api-1.7.32.jar:/Users/u/.m2/repository/org/springframework/spring-aspects/5.3.14/spring-aspects-5.3.14.jar:/Users/u/.m2/repository/org/springframework/boot/spring-boot-starter-validation/2.6.2/spring-boot-starter-validation-2.6.2.jar:/Users/u/.m2/repository/org/apache/tomcat/embed/tomcat-embed-el/9.0.56/tomcat-embed-el-9.0.56.jar:/Users/u/.m2/repository/org/hibernate/validator/hibernate-validator/6.2.0.Final/hibernate-validator-6.2.0.Final.jar:/Users/u/.m2/repository/jakarta/validation/jakarta.validation-api/2.0.2/jakarta.validation-api-2.0.2.jar:/Users/u/.m2/repository/org/liquibase/liquibase-core/4.5.0/liquibase-core-4.5.0.jar:/Users/u/.m2/repository/javax/xml/bind/jaxb-api/2.3.1/jaxb-api-2.3.1.jar:/Users/u/.m2/repository/javax/activation/javax.activation-api/1.2.0/javax.activation-api-1.2.0.jar:/Users/u/.m2/repository/com/fasterxml/jackson/module/jackson-module-jaxb-annotations/2.13.1/jackson-module-jaxb-annotations-2.13.1.jar:/Users/u/.m2/repository/com/fasterxml/jackson/core/jackson-annotations/2.13.1/jackson-annotations-2.13.1.jar:/Users/u/.m2/repository/com/fasterxml/jackson/core/jackson-core/2.13.1/jackson-core-2.13.1.jar:/Users/u/.m2/repository/com/fasterxml/jackson/core/jackson-databind/2.13.1/jackson-databind-2.13.1.jar:/Users/u/.m2/repository/jakarta/xml/bind/jakarta.xml.bind-api/2.3.3/jakarta.xml.bind-api-2.3.3.jar:/Users/u/.m2/repository/jakarta/activation/jakarta.activation-api/1.2.2/jakarta.activation-api-1.2.2.jar:/Users/u/.m2/repository/org/springframework/spring-core/5.3.14/spring-core-5.3.14.jar:/Users/u/.m2/repository/org/springframework/spring-jcl/5.3.14/spring-jcl-5.3.14.jar:/Users/u/.m2/repository/org/projectlombok/lombok/1.18.22/lombok-1.18.22.jar:/Users/u/.m2/repository/org/mapstruct/mapstruct-processor/1.3.1.Final/mapstruct-processor-1.3.1.Final.jar:/Users/u/.m2/repository/org/mapstruct/mapstruct/1.3.1.Final/mapstruct-1.3.1.Final.jar: -sourcepath /Users/u/Desktop/java_dev/projects/stockapp-spring-boot/stockapp/src/main/java:/Users/u/Desktop/java_dev/projects/stockapp-spring-boot/stockapp/target/generated-sources/annotations: -s /Users/u/Desktop/java_dev/projects/stockapp-spring-boot/stockapp/target/generated-sources/annotations -g -nowarn -target 11 -source 11 -encoding UTF-8

But calling it on command line shows:

error: no source files

any help on what it's wrong ?

ANSWER

Answered 2022-Jan-17 at 19:13

I've tried your example:

stockapp-spring-boot (master)$ mvn clean compile 
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] stockapp-spring-boot                                               [pom]
[INFO] stockapp                                                           [jar]
[INFO] 
[INFO] -------------< it.raffaele.esposito:stockapp-spring-boot >--------------
[INFO] Building stockapp-spring-boot 1.2.2-SNAPSHOT                       [1/2]
[INFO] --------------------------------[ pom ]---------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ stockapp-spring-boot ---

 ...

[INFO] --- maven-resources-plugin:3.2.0:resources (default-resources) @ stockapp ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Using 'UTF-8' encoding to copy filtered properties files.
[INFO] Copying 14 resources
[INFO] The encoding used to copy filtered properties files have not been set. This means that the same encoding will be used to copy filtered properties files as when copying other filtered resources. This might not be what you want! Run your build with --debug to see which files might be affected. Read more at https://maven.apache.org/plugins/maven-resources-plugin/examples/filtering-properties-files.html
[INFO] 
[INFO] --- maven-resources-plugin:3.2.0:copy-resources (Copy Vue frontend into Spring Boot target static folder) @ stockapp ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Using 'UTF-8' encoding to copy filtered properties files.
[INFO] Copying 8 resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.7.0:compile (default-compile) @ stockapp ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 27 source files to stockapp-spring-boot/stockapp/target/classes
[INFO] stockapp-spring-boot/stockapp/src/main/java/it/raffaele/esposito/app/service/MappingFunctions.java: stockapp-spring-boot/stockapp/src/main/java/it/raffaele/esposito/app/service/MappingFunctions.java uses or overrides a deprecated API.
[INFO] stockapp-spring-boot/stockapp/src/main/java/it/raffaele/esposito/app/service/MappingFunctions.java: Recompile with -Xlint:deprecation for details.
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for stockapp-spring-boot 1.2.2-SNAPSHOT:
[INFO] 
[INFO] stockapp-spring-boot ............................... SUCCESS [  0.090 s]
[INFO] stockapp ........................................... SUCCESS [ 21.988 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  22.339 s
[INFO] Finished at: 2022-01-17T20:12:05+01:00
[INFO] ------------------------------------------------------------------------

and no problems at all...

Source https://stackoverflow.com/questions/70746117

QUESTION

How to map from Model entity with list of Objects and one more Object to single Domain entity with Mapstruct

Asked 2021-Oct-09 at 07:51

How can I use MapStruct to create a mapper that maps from Model entity that includes one list of objects and one another object to Domain entity, consists of only list of nested objects.

My Model entity list object = SourceObject-A;

My Model entity second object = SourceObject-B;

My Doamin entity list object = TargetObject-AB;

My source classes looks like this:

SourceObject-A:

@NoArgsConstructor
@AllArgsConstructor
@Data
public class User {

  private int id;
  private String name;

  }

SourceObject-B:

@NoArgsConstructor
@AllArgsConstructor
@Data
public class CountryDetails {

    private String country;
    private String countryCode;

}

So I need to tranform it to this(TargetObject-AB):

@NoArgsConstructor
@AllArgsConstructor
@Data
public class DomainUser {
    private int id;
    private String name;
    private String country;
    private String countryCode;
}

UserController:

GetMapping("/users")
public List<DomainUser> getDUsers(List<User> usersList, CountryDetails countryDetails){

     List<DomainUser> domainUsersList=ModelToDomainMapper.INSTANCE.UserToDUser(usersList, 
     countryDetails);


  return domainUsersList;

}

Mapper Interface:

@Mapper
public interface ModelToDomainMapper {

    ModelToDomainMapper INSTANCE = Mappers.getMapper(ModelToDomainMapper.class)


    List<DomainUser> UserToDUser(List<User> users, CountryDetails countryDetails);


}

Expected sample json:

Source(Input):

[
        
  "countryDetails":{
        
                 "country"     : "India",
                 "countryCode" : "+91"
           
                  },
  "userslist" :[
        
            {
        
                "id"   : 1,
                "name" : "XXXXXXX"
           
              },
            {
        
               "id"   : 2,
               "name" : "XXXXXXX"
           
             }
        ]
    ]

Target(Expected Output):

[
  {
    "id": 1,
    "name": "xxxxxx",
    "country": "India",
    "countryCode": "+91"
  },
  {
    "id": 2,
    "name": "xxxxxx",
    "country": "India",
    "countryCode": "+91"
  }
]

Is there any way to get this above output please help me.

ANSWER

Answered 2021-Oct-09 at 07:51

You could do something like this in your mapper:

    DomainUser UserToDUser(User user, CountryDetails countryDetails);

    default List<DomainUser> UsersToDomainUsers(List<User> users, CountryDetails countryDetails) {
        return users.stream()
                .map((user -> UserToDUser(user, countryDetails)))
                .collect(Collectors.toList());
    }

This would use the MapStruct generated mapper to merge every single User with the same CountryDetails to create a DomainUser and collect them all into a List using streams.

Source https://stackoverflow.com/questions/69495617

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You can download it from GitHub, Maven.
You can use mapstruct like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the mapstruct component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

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