CtTypeImpl.getAllFields may throw a SpoonClassNotFoundException

[msteinbeck]

I would like to access all fields a of CtType node with getAllFields (in NoClasspath mode). Unfortunately, this method may throw a SpoonClassNotFoundException if the accessed class derives from another class not available in classpath. The following snippet show the corresponding stack trace:

spoon.support.reflect.reference.SpoonClassNotFoundException: cannot load class: MimeMessage with class loader sun.misc.Launcher$AppClassLoader@55f96302
    at spoon.support.reflect.reference.CtTypeReferenceImpl.findClass(CtTypeReferenceImpl.java:141)
    at spoon.support.reflect.reference.CtTypeReferenceImpl.getActualClass(CtTypeReferenceImpl.java:129)
    at spoon.support.reflect.reference.CtTypeReferenceImpl.getAllFields(CtTypeReferenceImpl.java:392)
    at spoon.support.reflect.declaration.CtTypeImpl.getAllFields(CtTypeImpl.java:437)
    at spoon.support.reflect.declaration.CtTypeImpl.getAllFields(CtTypeImpl.java:62)
    at spoon.support.reflect.reference.CtTypeReferenceImpl.getAllFields(CtTypeReferenceImpl.java:394)
    at spoon.support.reflect.declaration.CtTypeImpl.getAllFields(CtTypeImpl.java:437)
    at spoon.support.reflect.declaration.CtTypeImpl.getAllFields(CtTypeImpl.java:62)

Is this behavior a bug or to be expected?

[tdurieux]

The behavior of  getAllFields is:

1. get the fields present in the CtType
2. get the fields of the declaration of the super class
   • if the super class is in spoon AST go to 1.
   • if the super class is NOT in spoon AST, Spoon uses the reflexion to get the type then go to 1.

If the super class is not present neither the AST neither in the classloader (for the reflexion), spoon throws the exception SpoonClassNotFoundException.

This behavior is 'normal' but can be improved. But according to me, this exception must not be threw in noclasspath mode, a partial response and a warning is more appropriate.

[msteinbeck]

How do I determine noclasspath mode from within spoon?

[tdurieux]

if(factory.getEnvironment().getNoClasspath()) {
  // is in no classpath
}