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From Simeon Fitch <>
Subject Re: problems building antidote
Date Mon, 13 Nov 2000 22:00:34 GMT
--- Simeon Fitch <> wrote:
> I just tried it out under Java 1.3 instead of Java
> 1.2, and I'm getting an IllegalAccessException when
> loading a file, that I didn't get under Java 1.2 

I think I know the problem, and it is really nasty.
It's also probably my own punishment for trying to
leverage the Sun specific DOM building code rather
than writing my own. (I want a DOM builder that allows
me to register which classes get instantiated for each
element type, which the Sun implementation allows, but
the generic javax.xml.parser and org.w3c.dom stuff
doesn't, as far as I can tell.)

The root of the problem (if you can call it that) is
that Java 1.3 does much more rigorous, or at least
different, checking of access permissions.

I'm extending a class called
com.sun.xml.tree.ElementNode, which extends the
package private class com.sun.xml.tree.ParentNode.
ParentNode implements org.w3c.dom.Node,
org.w3c.dom.NodeList, and some other things. My code
calls the method org.w3c.dom.NodeList.getLength(),
which is implemented in the package private ParentNode
class, where Java 1.3 is barfing. So even though
NodeList is public and ElementNode is public, the fact
that ParentNode is package private and I'm calling
it's implementation of the NodeList.getLength() method
causes the IllegalAccessException to be thrown.
Incidentally, the ParentNode.getLength() method is
declared final, so I can't reimplement it.

This is a big bummer for me because I was getting a
lot of functionality for free. Unless others know of a
better way, for me to get a org.w3c.dom.Document
version of the build.xml file, where my own classes
are members of the tree, I'm going to have to
implement my own DOM builder using the SAX API, (just
like Ant does). I'm not sure the JAXP 1.0.1 API
exposes the amount of API I need to do this in library
inspecific manner.

FYI: One of the reasons I want a true w3c dom
representation of the build file is so that I can
preserve the input content faithfully, including
comments, etc. so when it is saved you are faithful to
the original version.

So, I'll see if I can get a quick fix in place in the
short term, but regardless of what I do it will
probably still be a useless tool for a while.


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