Hi Elliot
You could try using 'Repository.loadClass' to load a class (which should
use your existing class loading hierarchy) this will produce a
'JavaClass' object from which you will be able to create a 'ClassGen' to
get a 'MethodGen', or create a 'MethodGen' from the 'Method'
(JavaClass.getMethods() then search for name or signature) your
concerned with. From there 'MethodGen' has a method 'getExceptions()'
which returns an array of Strings for the exception names. I think
Repository uses the normal java class loading mechanisms so if these
were causing your troubles this may still be the case if so have a look
at the interface 'org.apache.bcel.util.Repository' implementations of
which allow you to specify a classloader or generally have other options.
Hope this helps
Bye Arrin
Elliot Barlas wrote:
I have an InstructionHandle containing an InvokeVirtual
instruction and I would like to get the list of all
declared exceptions thrown by the virtual method
invocation. I have tried the following:
1. Get the InvokeVirtual instruction from handle
2. Get the ReferenceType from the instruction
3. Cast the ReferenceType to an ObjectType when safe to
do so.
4. Get the class name from the ObjectType
5. Get the Class object from the class name via
Class.forName(className)
6. Get an array of methods for the Class
7. Get the method name from the InvokeVirtual instruction
8. Find the java.lang.reflect.Method in the array with
the given name
9. Get an array of exception Classes from the method
This should be sufficient, but in the environment that I
am working in, there are multiple class loaders and the
class lookup (Class.forName) is failing. Does anyone
know how to do something equivalent in BCEL alone without
requiring the use of Java reflection or class lookups?
Thanks,
Elliot
--
Conventional wisdom says to know your limits. To know your limits you
need to find them first. Finding you limits generally involves getting
in over your head and hoping you live long enough to benefit from the
experience. That's the fun part.
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