Question on strange "java.lang.IllegalAccessException" in "EngineUtils.callBeanMethod(...)"

[Rony G. Flatscher]

Hi there,

for a non-Java based scripting language (Rexx) I have been extending the functionality on the BSF 2.2 version with the intent to add that functionality to BSF 2.3 ASAP.

Being in the final testing stages, I have run into a problem for which I request some help/hints in this group of experts: while trying to invoke the method "hasMoreElements" (has no arguments) on an object of a class which implements the "Enumerator" interface I ran into the following exception (in "EngineUtils.callBeanMethod()"):

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bean=[java.util.Hashtable$Enumerator@63cb94], class=[class java.util.Hashtable$Enumerator], iterating over methods:
0/14: [getClass]
1/14: [hashCode]
2/14: [equals]
3/14: [toString]
4/14: [notify]
5/14: [notifyAll]
6/14: [wait]
7/14: [wait]
8/14: [wait]
9/14: [hasMoreElements]
---
com.ibm.bsf.BSFException: method invocation failed: java.lang.IllegalAccessException: java/util/Hashtable$Enumerator
at com.ibm.bsf.util.EngineUtils.callBeanMethod(EngineUtils.java:159)
at com.ibm.bsf.engines.rexx.RexxAndJava.javaCallBSF(RexxAndJava.java:1339)
-------------------- cut here -----------------------

The above contains the printout of debug information showing the methods of the Enumeration. The method found and to be executed via "callBeanMethod" is "hasMoreElements".

Now, needless to say, being able to use the methods defined by interfaces is essential, hence I am very eager to solve this problem. If anyone can provide some hints/tips/insights or ideas for workarounds, I would *really*, *really* appreciate it a *lot*!

TIA,

---rony

P.S.: The given line-number in EngineUtils.java should be 157, not 159. The reason: I am using the patched version of EngineUtils which therefore is able to deal with arguments of type "Character". In this particular case no arguments are given for the Enumerator method "hasMoreElements()".

P.P.S.: I am trying to enumerate all the keys of the Properties object received via the System class. Here's the Object Rexx code (building on the procedural Rexx interface):

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/* Object Rexx (message operator is the tilde: ~) */

system=.bsf.cls~Class.JC~forName("string", "java.lang.System") -- get the class object for "System", o.k.

properties = system~getProperties -- get the System properties, o.k.
enum = properties~propertyNames -- get an enumeration of the property names, o.k.

do while enum~hasMoreElements -- loop over enumeration: BOMBS!
key = enum~nextElement -- get next element
say "key:" key "value:" properties~getProperty("String", key)
end

::requires "BSF.cls" -- get the Object Rexx support for "bsf4rexx"
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