Re: [xml] handling xpath error - libxml

[Stefan Behnel <stefan_ml behnel de>]

Hi,

Senthil Nathan wrote:
> I would like to how to handle the xpath error gracefully when I use the
> libxml api,
> xmlXPathEvalExpression(path, xpathCtx).
> 
> If I pass a invalid path string to evaluate on the "xpathCtx", it throws the
> error as below and stops there.
> But I would like to handle that error gracefully and log it accordingly and
> proceed with my application.

What is the reason why you cannot just continue after this error? Just call
xmlXPathEvalExpression() again (with a working expression) and everything
should be fine.


> So, could anyone give me ideas on doing the same? Or is it possible to check
> the xpath expr is valid or not even before
> calling the libxml api.

You can compile the expression.

Stefan