[infinispan-issues] [JBoss JIRA] (ISPN-11675) ComponentAnnotationProcessor exception hides compilation error

[Dan Berindei (Jira)]

Dan Berindei created ISPN-11675:
-----------------------------------

             Summary: ComponentAnnotationProcessor exception hides compilation error
                 Key: ISPN-11675
                 URL: https://issues.redhat.com/browse/ISPN-11675
             Project: Infinispan
          Issue Type: Bug
          Components: Build, Core
    Affects Versions: 10.1.6.Final, 11.0.0.Dev04
            Reporter: Dan Berindei
            Assignee: Dan Berindei
             Fix For: 11.0.0.CR1


When a source file has a component annotation with an invalid value, e.g. {{@DefaultFactoryFor(classes = {NonExistentClass.class})}}, {{ComponentAnnotationProcessor}} hits a {{ClassCastException}}:

{noformat}
Error:java: ComponentAnnotationProcessor unexpected error: java.lang.ClassCastException: class com.sun.tools.javac.code.Attribute$UnresolvedClass cannot be cast to class com.sun.tools.javac.code.Attribute$Class (com.sun.tools.javac.code.Attribute$UnresolvedClass and com.sun.tools.javac.code.Attribute$Class are in module jdk.compiler of loader 'app')
  	at jdk.compiler/com.sun.tools.javac.model.AnnotationProxyMaker$ValueVisitor.visitArray(AnnotationProxyMaker.java:192)
  	at jdk.compiler/com.sun.tools.javac.code.Attribute$Array.accept(Attribute.java:327)
  	at jdk.compiler/com.sun.tools.javac.model.AnnotationProxyMaker$ValueVisitor.getValue(AnnotationProxyMaker.java:167)
  	at jdk.compiler/com.sun.tools.javac.model.AnnotationProxyMaker.generateValue(AnnotationProxyMaker.java:145)
  	at jdk.compiler/com.sun.tools.javac.model.AnnotationProxyMaker.getAllReflectedValues(AnnotationProxyMaker.java:104)
  	at jdk.compiler/com.sun.tools.javac.model.AnnotationProxyMaker.generateAnnotation(AnnotationProxyMaker.java:90)
  	at jdk.compiler/com.sun.tools.javac.model.AnnotationProxyMaker.generateAnnotation(AnnotationProxyMaker.java:81)
  	at jdk.compiler/com.sun.tools.javac.code.AnnoConstruct.getAnnotation(AnnoConstruct.java:185)
  	at org.infinispan.component.processor.ComponentAnnotationProcessor$ModelBuilder.getFactoryComponentNames(ComponentAnnotationProcessor.java:606)
  	at org.infinispan.component.processor.ComponentAnnotationProcessor$ModelBuilder.visitType(ComponentAnnotationProcessor.java:318)
  	at org.infinispan.component.processor.ComponentAnnotationProcessor$ModelBuilder.visitType(ComponentAnnotationProcessor.java:281)
  	at jdk.compiler/com.sun.tools.javac.code.Symbol$ClassSymbol.accept(Symbol.java:1477)
  	at java.compiler at 13.0.1/javax.lang.model.util.ElementScanner6.scan(ElementScanner6.java:153)
  	at java.compiler at 13.0.1/javax.lang.model.util.ElementScanner6.scan(ElementScanner6.java:140)
  	at org.infinispan.component.processor.ComponentAnnotationProcessor.process(ComponentAnnotationProcessor.java:122)
  	at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:1023)
  	at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:939)
  	at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1267)
  	at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1381)
  	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1263)
  	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:935)
  	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.lambda$doCall$0(JavacTaskImpl.java:104)
  	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.handleExceptions(JavacTaskImpl.java:147)
  	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:100)
  	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:94)
{noformat}

IntelliJ shows the annotation processor error first, hiding the compilation error, while Maven only says 

{noformat}
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project infinispan-core: Fatal error compiling: CompilerException: NullPointerException
{noformat}




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