I have this classes:

class Base {
   private Type type;
}

class A extends Base {
}

class B extends Base {
}

class C {
    private List<Base> bases;
}

And then I have the same structure for BaseDTO, ADTO, BDTO,and CDTO. When I convert from C to CDTO I want the A and B instances in bases to be converted to ADTO and BDTO respectively. Is there a way to do that through configuration?? Thanks for your time.

Hi,

Is there any way to avoid Lazy Loading launched by hibernate? With the dozer can create a CustomFieldMapper that manipulates these values​​, but found the ModelMapper much simpler

public class MyCustomFieldMapper implements CustomFieldMapper 
{
    public boolean mapField(Object source, Object destination, Object sourceFieldValue, ClassMap classMap, FieldMap fieldMapping) {       

        if (!(sourceFieldValue instanceof PersistentSet)) {
            return false;
        }


        if (((PersistentSet) sourceFieldValue).wasInitialized()) {

            return false;
        }
        destination = null;
        return true;
    }   
}

In the last release 0.7.8 the same code working on v0.7.7 doesn't work.

If I try to map a source object into a destination object with some not existing properties in source object, in the destination object the value is set to null even if I configurated to skip these properties

Hi,

There seems to be a problem when adding custom mappers and using spring boot dev tools.

I have added my mapper like so:

@Bean
public ModelMapper beanMapper() {
    ModelMapper modelMapper = new ModelMapper();
    modelMapper.addMappings(subscriberRqToSubscriberDtoMapper);
    return modelMapper;
}

But when devtools restarts the spring context, I get the following:

[restartedMain] WARN org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'legacyFunctionsController': Unsatisfied dependency expressed through field 'compositeSubscriptionService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'compositeSubscriptionService': Unsatisfied dependency expressed through field 'subscriptionService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'subscriptionService': Unsatisfied dependency expressed through field 'modelMapper'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'beanMapper' defined in class path resource [com/rentalcars/email/subscription/config/BeanConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.modelmapper.ModelMapper]: Factory method 'beanMapper' threw exception; nested exception is org.modelmapper.ConfigurationException: ModelMapper configuration errors:

1) Failed to configure mappings

1 error
[restartedMain] INFO com.rentalcars.events.firehose.impl.FirehoseAsync - Shutdown Async firehose
[restartedMain] INFO com.rentalcars.events.firehose.impl.FirehoseSync - Shutdown sync firehose
[restartedMain] INFO com.rentalcars.events.firehose.impl.FirehoseProxy - Shutdown firehose proxy
[restartedMain] INFO com.rentalcars.events.EventManagerImpl - Shutdown EventManager
[restartedMain] INFO org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean - Closing JPA EntityManagerFactory for persistence unit 'default'
[restartedMain] INFO org.apache.catalina.core.StandardService - Stopping service Tomcat
[restartedMain] INFO org.springframework.boot.autoconfigure.logging.AutoConfigurationReportLoggingInitializer - 

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
[restartedMain] ERROR org.springframework.boot.SpringApplication - Application startup failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'legacyFunctionsController': Unsatisfied dependency expressed through field 'compositeSubscriptionService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'compositeSubscriptionService': Unsatisfied dependency expressed through field 'subscriptionService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'subscriptionService': Unsatisfied dependency expressed through field 'modelMapper'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'beanMapper' defined in class path resource [com/rentalcars/email/subscription/config/BeanConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.modelmapper.ModelMapper]: Factory method 'beanMapper' threw exception; nested exception is org.modelmapper.ConfigurationException: ModelMapper configuration errors:

1) Failed to configure mappings

1 error
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:569)
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:349)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1219)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:751)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
	at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:371)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1186)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1175)
	at com.rentalcars.email.subscription.Application.main(Application.java:14)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'compositeSubscriptionService': Unsatisfied dependency expressed through field 'subscriptionService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'subscriptionService': Unsatisfied dependency expressed through field 'modelMapper'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'beanMapper' defined in class path resource [com/rentalcars/email/subscription/config/BeanConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.modelmapper.ModelMapper]: Factory method 'beanMapper' threw exception; nested exception is org.modelmapper.ConfigurationException: ModelMapper configuration errors:

1) Failed to configure mappings

1 error
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:569)
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:349)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1219)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1128)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1056)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:566)
	... 24 more
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'subscriptionService': Unsatisfied dependency expressed through field 'modelMapper'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'beanMapper' defined in class path resource [com/rentalcars/email/subscription/config/BeanConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.modelmapper.ModelMapper]: Factory method 'beanMapper' threw exception; nested exception is org.modelmapper.ConfigurationException: ModelMapper configuration errors:

1) Failed to configure mappings

1 error
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:569)
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:349)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1219)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1128)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1056)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:566)
	... 37 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'beanMapper' defined in class path resource [com/rentalcars/email/subscription/config/BeanConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.modelmapper.ModelMapper]: Factory method 'beanMapper' threw exception; nested exception is org.modelmapper.ConfigurationException: ModelMapper configuration errors:

1) Failed to configure mappings

1 error
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1128)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1023)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1128)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1056)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:566)
	... 50 more
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.modelmapper.ModelMapper]: Factory method 'beanMapper' threw exception; nested exception is org.modelmapper.ConfigurationException: ModelMapper configuration errors:

1) Failed to configure mappings

1 error
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
	... 62 more
Caused by: org.modelmapper.ConfigurationException: ModelMapper configuration errors:

1) Failed to configure mappings

1 error
	at org.modelmapper.internal.Errors.throwConfigurationExceptionIfErrorsExist(Errors.java:241)
	at org.modelmapper.internal.ExplicitMappingBuilder.build(ExplicitMappingBuilder.java:207)
	at org.modelmapper.internal.TypeMapImpl.addMappings(TypeMapImpl.java:89)
	at org.modelmapper.internal.TypeMapStore.getOrCreate(TypeMapStore.java:103)
	at org.modelmapper.ModelMapper.addMappings(ModelMapper.java:93)
	at com.rentalcars.email.subscription.config.BeanConfig.beanMapper(BeanConfig.java:25)
	at com.rentalcars.email.subscription.config.BeanConfig$$EnhancerBySpringCGLIB$$ac2467ae.CGLIB$beanMapper$2(<generated>)
	at com.rentalcars.email.subscription.config.BeanConfig$$EnhancerBySpringCGLIB$$ac2467ae$$FastClassBySpringCGLIB$$c50af4a5.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:356)
	at com.rentalcars.email.subscription.config.BeanConfig$$EnhancerBySpringCGLIB$$ac2467ae.beanMapper(<generated>)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
	... 63 more
Caused by: java.lang.ClassCastException: com.rentalcars.email.subscription.domain.dto.SubscriberDto$$EnhancerByModelMapper$$ed71a09 cannot be cast to com.rentalcars.email.subscription.domain.dto.SubscriberDto
	at com.rentalcars.email.subscription.domain.mapper.SubscriberRqToSubscriberDtoMapper.configure(SubscriberRqToSubscriberDtoMapper.java:31)
	at org.modelmapper.PropertyMap.configure(PropertyMap.java:383)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.modelmapper.internal.ExplicitMappingBuilder.build(ExplicitMappingBuilder.java:195)
	... 77 more

I've tried adding this to spring-devtools.properties:

restart.include.modelmapper=/modelmapper-(.*).jar

But that gives me loads of the following errors:

[restartedMain] WARN org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'legacyFunctionsController': Unsatisfied dependency expressed through field 'compositeSubscriptionService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'compositeSubscriptionService': Unsatisfied dependency expressed through field 'subscriptionService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'subscriptionService': Unsatisfied dependency expressed through field 'modelMapper'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'beanMapper' defined in class path resource [com/rentalcars/email/subscription/config/BeanConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.modelmapper.ModelMapper]: Factory method 'beanMapper' threw exception; nested exception is org.modelmapper.ConfigurationException: ModelMapper configuration errors:

1) Failed to generate proxy class for com.rentalcars.email.subscription.domain.dto.SubscriberRq. Ensure that com.rentalcars.email.subscription.domain.dto.SubscriberRq has a non-private constructor.
Caused by: org.modelmapper.internal.cglib.core.CodeGenerationException: java.lang.NoSuchMethodException-->com.rentalcars.email.subscription.domain.dto.SubscriberRq$$EnhancerByModelMapper$$d373e4d0.CGLIB$SET_THREAD_CALLBACKS([Lorg.modelmapper.internal.cglib.proxy.Callback;)
	at org.modelmapper.internal.cglib.proxy.Enhancer$EnhancerFactoryData.<init>(Enhancer.java:423)
	at org.modelmapper.internal.cglib.proxy.Enhancer.wrapCachedClass(Enhancer.java:709)
	at org.modelmapper.internal.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:94)
	at org.modelmapper.internal.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:91)
	at org.modelmapper.internal.cglib.core.internal.LoadingCache$2.call(LoadingCache.java:54)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at org.modelmapper.internal.cglib.core.internal.LoadingCache.createEntry(LoadingCache.java:61)
	at org.modelmapper.internal.cglib.core.internal.LoadingCache.get(LoadingCache.java:34)
	at org.modelmapper.internal.cglib.core.AbstractClassGenerator$ClassLoaderData.get(AbstractClassGenerator.java:116)
	at org.modelmapper.internal.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:291)
	at org.modelmapper.internal.cglib.proxy.Enhancer.createHelper(Enhancer.java:480)
	at org.modelmapper.internal.cglib.proxy.Enhancer.createClass(Enhancer.java:337)
	at org.modelmapper.internal.ProxyFactory.proxyClassFor(ProxyFactory.java:68)
	at org.modelmapper.internal.ProxyFactory.proxyFor(ProxyFactory.java:83)
	at org.modelmapper.internal.ExplicitMappingBuilder.createProxy(ExplicitMappingBuilder.java:294)
	at org.modelmapper.internal.ExplicitMappingBuilder.createProxies(ExplicitMappingBuilder.java:247)
	at org.modelmapper.internal.ExplicitMappingBuilder.visitPropertyMap(ExplicitMappingBuilder.java:230)
	at org.modelmapper.PropertyMap.configure(PropertyMap.java:380)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.modelmapper.internal.ExplicitMappingBuilder.build(ExplicitMappingBuilder.java:195)
	at org.modelmapper.internal.TypeMapImpl.addMappings(TypeMapImpl.java:89)
	at org.modelmapper.internal.TypeMapStore.getOrCreate(TypeMapStore.java:103)
	at org.modelmapper.ModelMapper.addMappings(ModelMapper.java:93)
	at com.rentalcars.email.subscription.config.BeanConfig.beanMapper(BeanConfig.java:25)
	at com.rentalcars.email.subscription.config.BeanConfig$$EnhancerBySpringCGLIB$$fac15065.CGLIB$beanMapper$1(<generated>)
	at com.rentalcars.email.subscription.config.BeanConfig$$EnhancerBySpringCGLIB$$fac15065$$FastClassBySpringCGLIB$$b616fa5f.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:356)
	at com.rentalcars.email.subscription.config.BeanConfig$$EnhancerBySpringCGLIB$$fac15065.beanMapper(<generated>)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1128)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1023)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1128)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1056)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:566)
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:349)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1219)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1128)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1056)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:566)
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:349)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1219)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1128)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1056)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:566)
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:349)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1219)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:751)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
	at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:371)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1186)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1175)
	at com.rentalcars.email.subscription.Application.main(Application.java:14)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: java.lang.NoSuchMethodException: com.rentalcars.email.subscription.domain.dto.SubscriberRq$$EnhancerByModelMapper$$d373e4d0.CGLIB$SET_THREAD_CALLBACKS([Lorg.modelmapper.internal.cglib.proxy.Callback;)
	at java.lang.Class.getDeclaredMethod(Class.java:2130)
	at org.modelmapper.internal.cglib.proxy.Enhancer.getCallbacksSetter(Enhancer.java:809)
	at org.modelmapper.internal.cglib.proxy.Enhancer.access$000(Enhancer.java:63)
	at org.modelmapper.internal.cglib.proxy.Enhancer$EnhancerFactoryData.<init>(Enhancer.java:414)
	... 99 more

2) Failed to configure mappings
Caused by: org.modelmapper.internal.ErrorsException
	at org.modelmapper.internal.Errors.toException(Errors.java:254)
	at org.modelmapper.internal.ProxyFactory.proxyClassFor(ProxyFactory.java:70)
	at org.modelmapper.internal.ProxyFactory.proxyFor(ProxyFactory.java:83)
	at org.modelmapper.internal.ExplicitMappingBuilder.createProxy(ExplicitMappingBuilder.java:294)
	at org.modelmapper.internal.ExplicitMappingBuilder.createProxies(ExplicitMappingBuilder.java:247)
	at org.modelmapper.internal.ExplicitMappingBuilder.visitPropertyMap(ExplicitMappingBuilder.java:230)
	at org.modelmapper.PropertyMap.configure(PropertyMap.java:380)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.modelmapper.internal.ExplicitMappingBuilder.build(ExplicitMappingBuilder.java:195)
	at org.modelmapper.internal.TypeMapImpl.addMappings(TypeMapImpl.java:89)
	at org.modelmapper.internal.TypeMapStore.getOrCreate(TypeMapStore.java:103)
	at org.modelmapper.ModelMapper.addMappings(ModelMapper.java:93)
	at com.rentalcars.email.subscription.config.BeanConfig.beanMapper(BeanConfig.java:25)
	at com.rentalcars.email.subscription.config.BeanConfig$$EnhancerBySpringCGLIB$$fac15065.CGLIB$beanMapper$1(<generated>)
	at com.rentalcars.email.subscription.config.BeanConfig$$EnhancerBySpringCGLIB$$fac15065$$FastClassBySpringCGLIB$$b616fa5f.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:356)
	at com.rentalcars.email.subscription.config.BeanConfig$$EnhancerBySpringCGLIB$$fac15065.beanMapper(<generated>)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1128)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1023)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1128)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1056)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:566)
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:349)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1219)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1128)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1056)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:566)
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:349)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1219)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1128)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1056)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:566)
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:349)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1219)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:751)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
	at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:371)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1186)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1175)
	at com.rentalcars.email.subscription.Application.main(Application.java:14)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)

2 errors
[restartedMain] INFO com.rentalcars.events.firehose.impl.FirehoseAsync - Shutdown Async firehose
[restartedMain] INFO com.rentalcars.events.firehose.impl.FirehoseSync - Shutdown sync firehose
[restartedMain] INFO com.rentalcars.events.firehose.impl.FirehoseProxy - Shutdown firehose proxy
[restartedMain] INFO com.rentalcars.events.EventManagerImpl - Shutdown EventManager
[restartedMain] INFO org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean - Closing JPA EntityManagerFactory for persistence unit 'default'
[restartedMain] INFO org.apache.catalina.core.StandardService - Stopping service Tomcat
[restartedMain] INFO org.springframework.boot.autoconfigure.logging.AutoConfigurationReportLoggingInitializer - 

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
[restartedMain] ERROR org.springframework.boot.SpringApplication - Application startup failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'legacyFunctionsController': Unsatisfied dependency expressed through field 'compositeSubscriptionService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'compositeSubscriptionService': Unsatisfied dependency expressed through field 'subscriptionService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'subscriptionService': Unsatisfied dependency expressed through field 'modelMapper'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'beanMapper' defined in class path resource [com/rentalcars/email/subscription/config/BeanConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.modelmapper.ModelMapper]: Factory method 'beanMapper' threw exception; nested exception is org.modelmapper.ConfigurationException: ModelMapper configuration errors:

Is there a correct way to get the two working together?

Cheers

Hi, i have a warning in console when i convert Set to String separated by comma. How to fix it? ModelMapper version 2.3.1 Compiled with jdk 11 and jdk 10

WARNING: Illegal reflective access using Lookup on org.modelmapper.internal.ProxyFactory (file:/C:/Users/dev/.m2/repository/org/modelmapper/modelmapper/2.3.0/modelmapper-2.3.0.jar) to interface java.util.Set

class ClassWithSet {
	private Set<Human> people;
	// getter, setter
}

class ClassWithString {
	private String names;
	// getter, setter
}

class Human {
	private String name;
	private String surname;
	// getter, setter
}

Converter<Set<Human>, String> setToStringComma =
                source -> source.getSource().stream().map(Human::getName).collect(Collectors.joining(","));

modelMapper.typeMap(ClassWithSet.class, ClassWithString.class)
                .addMappings(mapper -> mapper.using(setToStringComma).map(ClassWithSet::getPeople, ClassWithString::setNames));

Yesterday oracle jdk 11.0.11 was released and mapping stopped working with the following error (model mapper version 2.3.9):

...
Caused by: org.modelmapper.MappingException: ModelMapper mapping errors:

1) Error mapping a.b.c.ModelA to a.b.c.ModelB

1 error
	at org.modelmapper.internal.Errors.throwMappingExceptionIfErrorsExist(Errors.java:380)
	at org.modelmapper.internal.MappingEngineImpl.map(MappingEngineImpl.java:81)
	at org.modelmapper.ModelMapper.mapInternal(ModelMapper.java:573)
	at org.modelmapper.ModelMapper.map(ModelMapper.java:495)
	... 254 common frames omitted
Caused by: java.lang.ClassCastException: null

MM configuration:

// ... here are some custom converters
modelMapper.getConfiguration().setFieldMatchingEnabled(true).setMatchingStrategy(MatchingStrategies.STRICT).setFieldAccessLevel(
            Configuration.AccessLevel.PRIVATE).setUseOSGiClassLoaderBridging(true);

Rolling back to jdk 11.0.10 resolved the issue. Tried updating the library to 2.4.0 but it made no changes.

By default the ModelMapper passes values from a source bean to a target bean by getter and setter methods. However, if immutable DTOs, instead of POJOs, should be created ModelMapper should support the Builder pattern.

For instance: We want to map from a mutable Source (e.g. Entity) to a immutable Target DTO

` class Source {

private Long a;
private String b;

public Long getA() {
    return a;
}
public void setA(Long a) {
    this.a = a;
}
public String getB() {
    return b;
}
public void setB(String b) {
    this.b = b;
}

}

class Target {

private Long internalId;
private String externalId;

private Target(Builder builder) {
    this.internalId = builder.internalId;
    this.externalId = builder.externalId;
}
public Long getInternalId() {
    return internalId;
}
public String getExternalId() {
    return externalId;
}

public static Builder builder() {
    return new Builder();
}

public static final class Builder {
    private Long internalId;
    private String externalId;

    private Builder() {}

    public Builder withInternalId(Long internalId) {
        this.internalId = internalId;
        return this;
    }

    public Builder withExternalId(String externalId) {
        this.externalId = externalId;
        return this;
    }

    public Target build() {
        return new Target(this);
    }
}

} ` It should be possible to configure ModelMapper, so that the Target.Builder class is being used. Specific Mappings (Source.a -> Target.InternalId , Source.b -> Target.ExternalId) must be applied to the Builder pattern.

I have two pojo objects: Husband, Wife which reference each other.

Husband.java

public class Husband {
   private String name;
   private int age;
   private String man;
   private Wife wife;

   // getter, setter, builder, constructor are removed for berevity
}

Wife.java

public class Wife {
   private String name;
   private int age;
   private String woman;
   private Husband husband;

   // getter, setter, builder, constructor are removed for berevity
}

I've created simple typeMap rulings for both objects, where the referenced object is skipped.

My test class:

public class ModelTest {

@Test
public void test() {
    ModelMapper modelMapper = new ModelMapper();
    TypeMap<Wife, Wife> typeWife = modelMapper.createTypeMap(Wife.class, Wife.class);
    typeWife.addMappings(mapper -> {
        mapper.skip(Wife::setHusband);
    });

    TypeMap<Husband, Husband> typeHusband = modelMapper.createTypeMap(Husband.class, Husband.class);
    typeHusband.addMappings(mapper -> {
        mapper.skip(Husband::setWife);
    });

    Wife wife = Wife.builder().age(25).name("Sarah").woman("good woman").build();
    Husband husband = Husband.builder().age(28).name("Imtiaz").man("good man").build();
    wife.setHusband(husband);
    husband.setWife(wife);

    Husband updatedHusband = Husband.builder().age(28).name("Imtiaz Shakil").man("slightly good man").build();
    modelMapper.map(updatedHusband, husband);
    System.out.println(husband.toString());
    System.out.println(husband.getWife().toString());
    }

}

When mapping updatedHusband to husband, setWife() method is not skipped. But, if I remove typeWife mapping from modelMapper the code works fine.

I'm using ModelMapper 1.1.3

Thanks.

Please see example https://github.com/magdenkov/protobuf-modelmapper-problem

Thank a lot! Or if you can give some idea where can be problem, i will try to create pull request

I have similar example like below:

public class FirstObject {
    private List<SecondObject> myListOne;
    ...only getter method...
    ...no setter method for the list due to it is generated from wsdl 
}
public class SecondObject {
    private List<ThirdObject> myListTwo;
    ...only getter method...
    ...no setter method for the list due to it is generated from wsdl
}
public class ThirdObject {
    private String firstName;
    private String lastName;
    ...setters and getters...
}

FirstObject rq = new FirstObject();
...fills some data...

ModelMapper modelMapper = new ModelMapper();
FirstObjectDTO = modelMapper.map(rq, FirstObjectDTO.class);

The main issue are setter methods for the lists. If you try with PropertyMap or even with Providers you have to use setter methods and I cannot make them manually because all objects will be regenerated from wsdl each time when I run mvn eclipse:eclipse command.

In case that we have setter methods everything will work properly.

Is there any solution how to make this with Converter??

Hi, I'm using JPA(with Hibernate) and wish to convert some composite domain to view layer, So I'm using ModelMapper also.

At first, I defined some domain and DTO classes.

@Entity
public class User {
    ...
    @Id
    String id;

    @OneToOne
    Preference preference;
    ...
}

@Entity
public class Preference {
    ...
    @Id
    String id;

    @OneToOne
    User user;

    BigDecimal money;
    ...
}

public class UserDto {
    ...
    String id;
    BigDecimal preferenceMoney;
    ...
}

then, I've tried to mapping DTO object instance to domain object instance.

UserDto userDto = new UserDto();
userDto.setPreferenceMoney(1000.0);
mapper.map(userDto, User.class);

this code returns error

1) The destination property User.setPreference()/Preference.setUser() matches multiple source property hierarchies:

Skipping to set user to Preference class suppress this error, but when saving data to persist returned exception that preference object instance couldn't get user property. :(

Is this an another case of circular reference problem? I've dig circular reference test cases, but I can't find a solution.

Using Java 17 and ModelMapper 3.1.1 or 2.3.3, I have issue using a converter to map an interface implementation to a class.

Here is my Source interface:

public interface Source {
  int getId();
  String getName();
  boolean isDisabled();
}

Here is my Target class:

public class Target {

  private int id;
  private String name;
  private boolean disabled;

  // This constructor shouldn't even be called since we rely on the all arguments constructor in the Converter
  public Target() {
  }

  public Target(int id, String name, boolean disabled) {
    this.id = id;
    this.name = name;
    this.disabled = disabled;
  }

  public int getId() {
    return id;
  }

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

  public String getName() {
    return name;
  }

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

  public boolean isDisabled() {
    return disabled;
  }

  public void setDisabled(boolean disabled) {
    this.disabled = disabled;
  }
}

My Converter:

public class SourceTargetConverter extends AbstractConverter<Source, Target> {
  @Override
  protected Target convert(Source source) {
    return new Target(source.getId(), source.getName(), source.isDisabled());
  }
}

And how I use it:

    ModelMapper mapper = new ModelMapper();
    mapper.getConfiguration().setImplicitMappingEnabled(false);

    // Add a converter to map a Source implementation to Target
    mapper.addConverter(new SourceTargetConverter());

    Source source = new Source() {
      @Override
      public int getId() {
        return 42;
      }

      @Override
      public String getName() {
        return "hello";
      }

      @Override
      public boolean isDisabled() {
        return true;
      }
    };

    Target target = mapper.map(source, Target.class);

    Assertions.assertEquals(42, target.getId());
    Assertions.assertEquals("hello", target.getName());
    Assertions.assertEquals(true, target.isDisabled());

All the assertions fail.

Is there something wrong in my code?

Here is a repository reproducing the issue: https://github.com/fistons/modelmapper-issue

Does ModelMapper support GraalVM Native Image building? If not, can you please share the plan as when it would? Thanks

Have tried to build a native image using latest Graal and Spring Boot, running into multiple issues.

cc: @chhsiao90

Hi am using model mapper 3.1.1. I want to skip the value assignment of destination property only if it is not null. But when I provide the condition am always getting null pointer exception.

@Configuration
public class ModelMapperInitializer {

    @Bean
    public ModelMapper modelMapper() {

        Condition<SourceObject, DestinationObject> isNotNull = context -> context.getDestination().getDestProperty() != null;
        
        ModelMapper modelMapper = new ModelMapper();
        
        modelMapper.typeMap(SourceObject.class, DestinationObject.class).addMappings(mapper -> 
             mapper.when(isNotNull).skip(SourceObject::getDestProperty, DestinationObject::setDestProperty));
        
        return modelMapper;
    }
}

Controller:

@Autowired
private ModelMapper modelMapper;
modelMapper.map(sourceObj, destObj);

The exception is always thrown here in the MappingEngineImpl class

Could anyone please help in fixing the issue.

The current version when I try to do a native build, produces the error that I attach.

The problem seems to be due to the fact that it is not allowed to generate proxies at runtime, as the instantiation of ByteBuddy fails.

I'm doing tests to save the proxies that are generated and register them as Reflection hints; Do you have any other ideas?

error.txt

If my source object has an empty array in it's hierarchy it doesn't get mapped (or is ignored maybe?). I created a program here to demonstrate: https://onecompiler.com/java/3yktwzjc3

The output is:

FooDTO before: FooDTO{name='My foo DTO', bar=BarDTO{name='My foo's bar', jars=[]}}

Foo before: Foo{name='My Foo', bar=Bar{name='null', jars=[Jar{name='Jar 1'}, Jar{name='Jar 2'}]}}

Foo after: Foo{name='My foo DTO', bar=Bar{name='My foo's bar', jars=[Jar{name='Jar 1'}, Jar{name='Jar 2'}]}}

You can see I map FooDTO -> Foo. The mapping for everything works e.g. the name fields, but the empty 'jars' array in the FooDTO's bar object doesn't get mapped.

Any ideas? Thanks