nullptr when using shared configuration

[sjaakd]

ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.5.1:compile (default-compile) on project gmw_dao: Compilation failure: Compilation failure:
[ERROR] /C:/Development/workspace/gmw_common/gmw_dao/src/main/java/nl/bro/dao/gm/gmw/impl/SharedMappingConfig.java:[184,32] No property named "insertedPartDiameter" exists in source parameter(s).
[ERROR] /C:/Development/workspace/gmw_common/gmw_dao/src/main/java/nl/bro/dao/gm/gmw/impl/DtoToEntityCreateMapper.java:[55,17] Internal error in the mapping processor: java.lang.NullPointerException          
 at org.mapstruct.ap.internal.model.source.SourceReference.copyForInheritanceTo(SourceReference.java:310)       
 at org.mapstruct.ap.internal.model.source.Mapping.copyForInheritanceTo(Mapping.java:431)        
 at org.mapstruct.ap.internal.model.source.MappingOptions.applyInheritedOptions(MappingOptions.java:265)         
 at org.mapstruct.ap.internal.processor.MapperCreationProcessor.mergeInheritedOptions(MapperCreationProcessor.java:450)         
 at org.mapstruct.ap.internal.processor.MapperCreationProcessor.getMappingMethods(MapperCreationProcessor.java:274)      
 at org.mapstruct.ap.internal.processor.MapperCreationProcessor.getMapper(MapperCreationProcessor.java:152)     
 at org.mapstruct.ap.internal.processor.MapperCreationProcessor.process(MapperCreationProcessor.java:123)        
 at org.mapstruct.ap.internal.processor.MapperCreationProcessor.process(MapperCreationProcessor.java:80)        
 at org.mapstruct.ap.MappingProcessor.process(MappingProcessor.java:280)         
 at org.mapstruct.ap.MappingProcessor.processMapperTypeElement(MappingProcessor.java:260)        
 at org.mapstruct.ap.MappingProcessor.processMapperElements(MappingProcessor.java:226)          
 at org.mapstruct.ap.MappingProcessor.process(MappingProcessor.java:162)         
 at com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:794)         
 at com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:705)          
 at com.sun.tools.javac.processing.JavacProcessingEnvironment.access$1800(JavacProcessingEnvironment.java:91)    
 at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1035)   
 at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1176)         
 at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1170)     
 at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:856)        
 at com.sun.tools.javac.main.Main.compile(Main.java:523)         
 at com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:129)         
 at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:138)   
 at org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToolsCompiler.java:125)         
 at org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile(JavacCompiler.java:171)      
 at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:886)        
 at org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:129)         
 at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)    
 at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)     
 at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)      
 at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)      
 at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)    
 at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)      
 at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)       
 at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)      
 at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)       
 at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)       
 at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)        
 at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)     
 at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)      
 at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)        
 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.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)          
 at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)          
 at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)       
 at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
[ERROR] -> [Help 1]
[ERROR]

@filiphr : this time on a valid line 😄

[filiphr]

@sjaakd with the correct line it makes much more sense :). Does this mean that you can reproduce it? If you have a small example from at least how does the structure with the mapper and the config looks like, it would be great :)

[sjaakd]

@filiphr the real mappers are quite big. It happens when you have a shared config and non existing properties. The exact conditions I need to figure out...

[Alicja-Majewska]

I had the same problem reported in issue #1278. I tried debugging "process" maven goal (thanks for this advice, it was fun). It has turned out that my problem is related with #1198 - the inheriting mapper is located in a different jar than the inherited mapper, so all parameter names in inheriting mapper are overriden with names arg0, arg1, arg2, arg3 ... As a consequence each mapping method with multiple input parameters was not correctly defined. I work with Java 6, so solution with preserving parameter names during compilation avaibale in Java 8 is not applicable for me. The only one option in to use arg0, arg1 ... as parameter names. Thanks for your help!

[filiphr]

@Alicja-Majewska glad that you think the debugging was fun 😄 . Yes having jars in a different jar is problematic when the parameter names are not preserved.

[sjaakd]

It is related to the combination SharedConfig and nested source properties.. .

[filiphr]

Closed via 6fbc4cf