XOM API for Processing XML with Java

[Wolfgang Hoschek <whoschek AT lbl.gov>]

Hi,

In d23 there seems to be a classloading bug that manifests itself when 
using xom in a servlet where xom.jar is put into WEB-INF/lib. Here, the 
Verifier cannot be initialized and throws a 
java.lang.ExceptionInInitializerError
        at nu.xom.Element.setNamespaceURI(Element.java:719)

I tentatively patched the way the Verifier looks up characters.dat so 
that it works for me in the servlet case:

static {
        //ClassLoader loader = ClassLoader.getSystemClassLoader();
        //DataInputStream in = new DataInputStream(
        //  loader.getResourceAsStream("nu/xom/characters.dat"));
        
        DataInputStream in = new        
        DataInputStream(getResourceAsStream("nu/xom/characters.dat"));

        // no other changes
        // ...
}

private static java.io.InputStream getResourceAsStream(String fileName) {
                ClassLoader loader = 
Thread.currentThread().getContextClassLoader();
                if (loader == null) { // there may not be a context class 
loader
                        loader = Verifier.class.getClassLoader();
                }

                return loader.getResourceAsStream(fileName);
        }
        

Above patch works for me but can perhaps be improved - I'm no class 
loader guru either...

Regards,
Wolfgang.