Validating XSD against XML In Ruby On Rails.(Part 1)
Ruby On Rails November 15th, 2007Validating XSD against XML In Ruby On Rails.(Part 1)
XMLSchema Validator Helper For Ruby on Rails
Introduction to XSD/XMLSchema
Before I get into the actual implementation of XMLSchema Validation, I would like to give a brief introduction to what is XSD and why do we actually need to validate the xml against its XSD.
XML Schema can be used to express a schema: a set of rules to which an XML document must conform in order to be considered ‘valid’ according to that schema. However, unlike most other schema languages, XML Schema was also designed with the intent of validation resulting in a collection of information adhering to specific datatypes, which can be useful in the development of XML document processing software, but which has also provoked criticism.For more info…you can check out the w3c based standards for the Xml Schema at the following link:
The Xml support for our rails framework is not up to the expectations, with REXML library providing some kind of support doing some basic xml operations which does not support xml validate which generally tend to go slow when the app is exposed to the production environment.
So, after 2 hours of hardcore googling, I finally came up with the xmlstratlet command line utility.
XMLStarlet is a command line XML toolkit which can be used to transform,
query, validate, and edit XML documents and files using simple set of shell
commands in similar way it is done for plain text files using grep/sed/awk/
tr/diff/patch.
For more info, you can reach the xmlstartlet utility at the following website:
http://xmlstar.sourceforge.net/
You can download the latest version of the xmlstartlet library at the following location:
http://xmlstar.sourceforge.net/download.php
So, with this base knowledge in our brains, we can now move to the core validation of xml using xsd in oour next part
