Hi,
for many applications, it is necessary to execute an arbitrary XPath
expression and return the list of all nodes that the expression
references in location paths.
For instance, the following expression :
"sum(/doc/[EMAIL PROTECTED]'3']/@value) * /doc/tax/@tax" references value,
level and tax attributes.
In my application I did this using Xalan-J by extending Compiler and
WalkerFactory to create my own WalkingIterators in order to get the
nodes while executing the XPath. This is not very nice, since it depends
heavily on the version of Xalan.
Would it be possible to implement this using the XPathVisitor class? Is
it possible to somehow call the visitors while executing the expression
in order to know correct context for all LocPaths? Or is there another
way to accomplish this?
-mikko
