All:
After reading about Reflection in the Sams book "Java Unleashed" and some
trial & error, I found what works. So just in case someone else wants to
pass an XMLbeans-generated method as a parameter, here is the solution:
The getClass() method call needs to on a specific object of the generated
class, not the array of objects. That is, the 6th line of code below
should be changed from:
Class c2 = house.getClass();
to:
Class c2 = house[0].getClass();
This will allow passing a method name (as a String) as a parameter to an
intermediate method that, in turn, invokes a call to that named method.
In other words, a method to be called can be determined at run-time, not
just compile-time. Any source-level debugger must use this.
Gene
PS: It's truely amazing that 206 methods are generated for the object!
------- Forwarded message -------
Was a Nubie, now I'm just dangerous...
I found I could use a class for more objects if I could pass methods to
be called as parameters to my constructor. A lot of postings, how-to
atricles and a Sun Tutorial led me to Reflection, aka Class Method.
Sample code, which I incorporated, is at
<http://java.sun.com/docs/books/tutorial/reflect/object/invoke.html>
This example worked (embedded into a class of mine) before I added my
cloning of statements (each is marked below). I get a
"NoSuchMethodException" catch from the statement marked "//me -X".
"getHOUSENAME" is an XMLBeans generated method and I've used it earlier
in the same class.
Here's the code segment (full files attached):
public static String append(String firstWord, String secondWord) //Sun
{ //Sun
String result = null; //Sun
String result2 = null; //me
Class c = String.class; //Sun
Class c2 = house.getClass(); //me
Class[] parameterTypes = new Class[] {String.class}; //Sun
Method concatMethod; //Sun
Method houseGetMethod; //me
Method houseSetMethod; //me
Object[] arguments = new Object[] {secondWord}; //Sun
System.out.println(nameTextCO.getText()); //me
String shortName = nameTextCO.getText(); //me
Object[] arguments2 = new Object[] {shortName}; //me
try { //Sun
concatMethod = c.getMethod("concat", parameterTypes); //Sun
houseGetMethod = c2.getMethod("getHOUSENAME", null);
//me-X
result = (String) concatMethod.invoke(firstWord, arguments); //Sun
result2 = (String) houseGetMethod.invoke(house[0], null); //me
System.out.println(result2); //me
} catch (NoSuchMethodException e) { //Sun
System.out.println(e); //Sun
} catch (IllegalAccessException e) { //Sun
System.out.println(e); //Sun
} catch (InvocationTargetException e) { //Sun
System.out.println(e); //Sun
} //Sun
return result; //Sun
}
Any suggestions?
Appreciations,
Gene
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