Comments on: Hpricot - My New Favourite Ruby XML Parser http://www.peterkrantz.com/2007/ruby-xml-parsing/ A blog about technology, visualization, music and unmanned vehicle experiments Tue, 06 Jan 2009 22:02:25 +0000 http://wordpress.org/?v=2.7 hourly 1 By: Fear and Loathing in Software Development | Educate. Liberate. http://www.peterkrantz.com/2007/ruby-xml-parsing/comment-page-1/#comment-2046 Fear and Loathing in Software Development | Educate. Liberate. Sat, 29 Sep 2007 22:03:58 +0000 http://www.peterkrantz.com/2007/ruby-xml-parsing/#comment-2046 [...] project I’ve worked on since it was initially released. This can further be evidenced by various people around the net, and several personal [...] [...] project I’ve worked on since it was initially released. This can further be evidenced by various people around the net, and several personal [...]

]]> By: Anonymous http://www.peterkrantz.com/2007/ruby-xml-parsing/comment-page-1/#comment-1985 Anonymous Fri, 27 Jul 2007 23:54:30 +0000 http://www.peterkrantz.com/2007/ruby-xml-parsing/#comment-1985 Thank you so much for making this comment on the web. I also found REXML to be very slow and libxml is super hard to install on windows - at least i couldn't get it to run after hours of work and finally decided to look for other XML implementations. Hpricot installed out of the box with gem and I successfully replaced all REXML commands with hpricot API without any problems. The XML process time improved from 30 seconds to 1. Thanks! Thank you so much for making this comment on the web. I also found REXML to be very slow and libxml is super hard to install on windows - at least i couldn’t get it to run after hours of work and finally decided to look for other XML implementations.
Hpricot installed out of the box with gem and I successfully replaced all REXML commands with hpricot API without any problems. The XML process time improved from 30 seconds to 1. Thanks!

]]> By: Greg Borenstein http://www.peterkrantz.com/2007/ruby-xml-parsing/comment-page-1/#comment-1965 Greg Borenstein Mon, 11 Jun 2007 18:39:22 +0000 http://www.peterkrantz.com/2007/ruby-xml-parsing/#comment-1965 Just today, I experienced the same problem as Hedley with Hpricot's XPath and CSS selectors failing to navigate a namespaced xml doc. With a little bit of hunting around in the wiki, I discovered that the problem seems to have been fixed in a recent change: http://code.whytheluckystiff.net/hpricot/changeset/146 Upgrading my gem to 0.5 got things working for me. I can now navigate namespaced xml docs as normal with Hpricot. The one tangle seems to be that Hpricot still downcases all of the tags, so I had to take that into account when constructing my selectors. There's some discussion of the problem over on the wiki so it is somewhat likely on its way towards resolution. Just today, I experienced the same problem as Hedley with Hpricot’s XPath and CSS selectors failing to navigate a namespaced xml doc. With a little bit of hunting around in the wiki, I discovered that the problem seems to have been fixed in a recent change:

http://code.whytheluckystiff.net/hpricot/changeset/146

Upgrading my gem to 0.5 got things working for me. I can now navigate namespaced xml docs as normal with Hpricot. The one tangle seems to be that Hpricot still downcases all of the tags, so I had to take that into account when constructing my selectors. There’s some discussion of the problem over on the wiki so it is somewhat likely on its way towards resolution.

]]> By: Hedley Robertson http://www.peterkrantz.com/2007/ruby-xml-parsing/comment-page-1/#comment-1920 Hedley Robertson Fri, 30 Mar 2007 21:06:56 +0000 http://www.peterkrantz.com/2007/ruby-xml-parsing/#comment-1920 One thing I found is that hpricot does not like namespaces in the xml, so to be able to parse them I just substituted the ':' away, then it could read the tags again. sms: Documentation for hpricot is here: http://code.whytheluckystiff.net/hpricot/wiki/AnHpricotShowcase One thing I found is that hpricot does not like namespaces in the xml, so to be able to parse them I just substituted the ‘:’ away, then it could read the tags again.

sms: Documentation for hpricot is here: http://code.whytheluckystiff.net/hpricot/wiki/AnHpricotShowcase

]]> By: sms http://www.peterkrantz.com/2007/ruby-xml-parsing/comment-page-1/#comment-1692 sms Mon, 05 Mar 2007 06:02:03 +0000 http://www.peterkrantz.com/2007/ruby-xml-parsing/#comment-1692 Hi .. Can you post a link to the reference for Hpricot. As with everything in Ruby the documentation is hard .. very hard to find. The link by mechanized on rubyforge is dead .. has been that way for a few days. Thanks Hi ..
Can you post a link to the reference for Hpricot.
As with everything in Ruby the documentation is hard .. very hard to find.
The link by mechanized on rubyforge is dead .. has been that way for a few days.

Thanks

]]> By: Brian Hutchison http://www.peterkrantz.com/2007/ruby-xml-parsing/comment-page-1/#comment-1602 Brian Hutchison Thu, 22 Feb 2007 23:45:42 +0000 http://www.peterkrantz.com/2007/ruby-xml-parsing/#comment-1602 Thanks for the posting! eI also had the same problem with REXML and found a Windows binary that someone had blogged about making. My question for you is, how would you compare the performance of Hpricot vs. libxml? My app is particularly sensitive to speed, so although Hpricot might be easier I am wondering what you saw performance wise? One file I have that I would like to parse is 20megs! I might have to pre-process it first, but still - some larger data sets. I also pull in an XML web service and one page was taking 15-20 seconds using REXML and it dropped to about 1.5 seconds using libxml, and most of that is in waiting for the external web service. Thanks for the posting!

eI also had the same problem with REXML and found a Windows binary that someone had blogged about making. My question for you is, how would you compare the performance of Hpricot vs. libxml? My app is particularly sensitive to speed, so although Hpricot might be easier I am wondering what you saw performance wise? One file I have that I would like to parse is 20megs! I might have to pre-process it first, but still - some larger data sets.

I also pull in an XML web service and one page was taking 15-20 seconds using REXML and it dropped to about 1.5 seconds using libxml, and most of that is in waiting for the external web service.

]]> By: MikeBlake http://www.peterkrantz.com/2007/ruby-xml-parsing/comment-page-1/#comment-1461 MikeBlake Wed, 14 Feb 2007 21:23:23 +0000 http://www.peterkrantz.com/2007/ruby-xml-parsing/#comment-1461 Hi Peter, I had the same prblem with REXML, will check out Hpricot... Good to see you hacking away on Leave! Hi Peter,

I had the same prblem with REXML, will check out Hpricot… Good to see you hacking away on Leave!

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