vtd xml - vtd-xml: Autopilot: declareVariableExpr -

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java vtd-xml has following api

class autopilot{     declarevariableexpr(java.lang.string varname, java.lang.string varexpr); } register binding between variableexpr name , variableexpr expression

i have used simple variable bindings like:

abc => "some value"

and autopilot can run expressions like

ap.selectxpath("concat(/a/b/text(),  $abc)"); ap.evalxpathtostring()

my question is:

the api says binds variable variable expression. how bind variable expression? , usage of binding 'expression'?

try this. ap.declarevariableexpr("my_expr","/a/b/c");


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