Hi there,
this is the "diff -uw" of the changes applied to
com.ibm.bsf.util.EngineUtils.java (it depicts the already reported
char-patch as well). This version uses reflection to find out whether
setAccessible() is available (so it is not dependent on the official
java version, thanks to Igor to point out that importance!).
Regards,
---rony
----------------------------- cut here ------------------------
--- bkp\EngineUtils.java 2001-01-30 17:46:18.000000000 +0100
+++ EngineUtils.java 2003-02-13 22:31:28.000000000 +0100
@@ -20,6 +20,23 @@
// temp directory
static BSFClassLoader bsfCL;
+ // ---rgf, 2003-02-13, determine whether changing accessibility of
Methods is possible
+ static boolean bMethodHasSetAccessible=false;
+
+ // ---rgf, 2003-02-13, determine whether changing accessibility of
Methods is possible
+ static {
+ Class mc=Method.class; // get the "Method" class object
+ Class arg[]={boolean.class}; // define an array with the
primitive "boolean" pseudo class object
+ try {
+ Object o=mc.getMethod("setAccessible", arg ); // is this
method available?
+ bMethodHasSetAccessible=true; // no exception, hence method
exists
+ }
+ catch (Exception e)
+ {
+ bMethodHasSetAccessible=false;// exception occurred, hence
method does not exist
+ }
+ }
+
//////////////////////////////////////////////////////////////////////////
/**
@@ -137,6 +154,8 @@
else if(args[i] instanceof Double ) argTypes[i]= double.class;
} else if (args[i] instanceof Boolean) {
argTypes[i] = boolean.class;
+ } else if (args[i] instanceof Character) {
+ argTypes[i] = char.class;
}
}
m = MethodUtils.getMethod (beanClass, methodName, argTypes,
@@ -147,6 +166,14 @@
}
}
+ // in order to allow access to public methods of inner classes on
Java 1.2, 1.3, 1.4
+ // one needs to shut off the access-check; otherwise an
"IllegalAccessException" is thrown
+ // ---rgf, 2003-02-13 (no general solution for Java 1.1)
+ if ( bMethodHasSetAccessible &&
Modifier.isPublic(m.getModifiers()) ) // available since Java 1.2
+ {
+ m.setAccessible(true); // ---rgf, 2003-02-13, no access
checks for this method!
+ }
+
// call it, and return the result
return m.invoke (bean, args);
} catch (Exception e) {
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With the above patch the following Object Rexx program now works
flawlessly and dumps the System properties:
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/* Object Rexx (message operator is the tilde: ~) */
/* this version works on Java 1.2 and higher, *not* on 1.1 (see other
variants which work on Java 1.1) */
system=.bsf.cls ~ Class.JC ~ forName("string", "java.lang.System") --
get the "System" class object
properties=system~getProperties -- get the System properties
enum=properties~propertyNames -- get an enumeration of the
property names
say copies("=", 70)
do while enum~hasMoreElements -- loop over enumeration
key=enum~nextElement -- get next element
say "key:" left("["key"]", 30) "value:
["properties~getProperty("String", key)"]"
end
::requires "BSF.cls" -- get the Object Rexx support for bsf4rexx
----------------------------- cut here ------------------------
If no more errors pop up with the Rexx and Object Rexx support until the
end of February, I will adapt the Rexx engine to Apache BSF and apply
the necessary licenses.
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