On 6/1/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
Hi, I have a question about XPath and have been pointed in the direction of this mailing list. Hope this is the correct place. I have the following XPath: /base/group/[EMAIL PROTECTED]/instances/[EMAIL PROTECTED] and when used on my XML document it returns multiple items, e.g. /base[1]/group[1]/item[167]/instances[1]/instance[1] - result /base[1]/group[1]/item[195]/instances[1]/instance[1] - result /base[1]/group[1]/item[197]/instances[1]/instance[1] - result /base[1]/group[1]/item[202]/instances[1]/instance[1] - result /base[1]/group[1]/item[216]/instances[1]/instance[1] - result In this particular instance however, I only need to find one of the results, and it doesn't matter which one. For CPU efficiency I would like to find a way to do that. Does anyone know how I can achieve this, ideally by modifying my XPath, but if that is not possible, if there are parameters, or context set up that could be done within LibXML to restrict it to one result.
You could use a predicate such as [position() = 1] to get the first result. I don't know if this saves you anything performance-wise though, one of the libxml2 hackers will have to answer that.
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