Hi,
The problem with extending NodeImpl is that many other classes subclass NodeImpl. So if you subclass NodeImpl, your subclass actually doesn't get used unless you want to rewrite all subclasses of NodeImpl too.
However, if you just want to access protected stuff, just create a class with the package name same as NodeImpl. Since that class will be in the same package, you will have access to all protected and package wide variables / methods! This is really easy to do, but one thing to keep in mind: you class needs to be loaded from the same classloader, otherwise you get an exception while attempting to access the Xerces classes. (Which means for Tomcat users, you need to remove the XercesImpl.jar from common/endoresed directory)
hope that helps, Arno
George Papamarkos wrote:
Hi guys, I am currently using Xerces in doing some parsing and manipulation of XML in parallel with Xalan. I've made some attemtps to extend the NodeImpl class from Xerces DOM Implementation API but I could make this think work. Actually I want to extend this class in order to use some of the protected fields and methods that it contains but I could find any example or a guide of how can I subclass and use the facilities of NodeImpl. Has anyone of you ever used this class ? And if yes can please give me a example that illustrates how can I instantiate it and associate it with a new XML document using all these that are mentioned in the JavaDoc ( Document Factory etc.) I would really appriciate any kind of help.
Best Regards,
George
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