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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=3995 Request to abstract variable usage in XPath. Summary: Request to abstract variable usage in XPath. Product: XalanJ2 Version: 2.2.x Platform: Other OS/Version: Other Status: NEW Severity: Enhancement Priority: Other Component: org.apache.xpath AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] Variable usage in XPath is currently hardcoded for specifically how XSL uses variables. VariableStack currently exposes an API that is modeled after traditional program stacks and stack frames. Because of the low level impelementation of VariableStack, it has also been declared 'final', making any extension impossible. While this is good for XSL, it is incompatible to any alternate implementation of variables/VariableStack. What we need is a way to "plug in" our own implementation of variables for XPath. This would require variable usage (possibly VariableStack) to be abstracted out of its current low level form. While it may not be as effecient, I'm sure an implementation could be presented that would offer very close performance.
