From: Robert Klemme <shortcutter@...>
Date: 2008-03-31T03:50:15+09:00
Subject: Re: rexml to slow

On 30.03.2008 20:23, Bu Mihai wrote:
> Robert Klemme wrote:
>> On 29.03.2008 08:46, Bu Mihai wrote:
>>> I have an xml file and sometimes i call the find_first_recursive method;
>>> when my xml file is small its working fine but when i have ~900 lines im
>>> waiting ~15 seconds to return me the wanted node and i want something
>>> faster; How can i obtain a better time?
>> What's the find criteria you use?  Maybe you can use XPath.  900 lines
>> does not really sound large so I suspect there might be an algorithmic
>> or design error.
> 
> this is the criteria:
> 
>  node=rexml_element.find_first_recursive {|node| 
> node.attributes["again"]=="yes"}

That's easy

doc.elements.each('//[@again="yes"]') do |node|
   # any node that has attribute again with value yes
end

And I am pretty sure that this is faster than your approach.  What does 
your program do?  With more context we can come up with further suggestions.

Kind regards

	robert