> > Second, to get the external variables from all the modules that participate
> in
> > a query, we also need a getExternalVariables() at the XQueryImpl level. This
> > method will go through all the static context objs in
> > theCompilerCB->theSctxMap and compute the union of the external variables
> > returned from each static ctx.
> Ok so I have some questions:
> So this function getExternalVariables in the XQueryImpl should return all the
> unions of the external variables? and make this function available for the
> api? or what Did you meant for compute the union?
> and Do I need to remove from the include/static_context.h the
> getExternalVariables function?

Both of the methods should appear in the c++ api, one in 
include/static_context.h and the other in include/xquery.h. The xqxq module 
should use the XQuery method.

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