Creating a Dynarex schema from a 1-line string

Saturday, 08 May 2010 11:13
end-xmlsend-root_name-xml-dynarex
Here's how to create a Dynarex schema from a shorthand schema represented by a 1-line string.

require 'builder'

def dynarex_schema(s)
ptrn = %r((\w+)\[?([^\]]+)?\]?\/(\w+)\(([^\)]+)\))
root_name, raw_summary, record_name, raw_fields = s.match(ptrn).captures
summary, fields = [raw_summary || '',raw_fields].map {|x| x.split(/,/).map &:strip}

xml = Builder::XmlMarkup.new( :target => buffer='', :indent => 2 )
xml.instruct! :xml, :version => "1.0", :encoding => "UTF-8"

xml.send root_name do
xml.summary do
summary.each do |item|
xml.send item
end
end
xml.records do
xml.send record_name do
fields.each do |field|
xml.send field
end
end
end
end

buffer
end

s = "contacts[title,description]/contact(name,age,dob)"
dynarex = dynarex_schema(s)
puts dynarex

output: 





  

    
<br />    <description/>
<br />  </summary>
<br />  <records>
<br />    <contact>
<br />      <name/>
<br />      <age/>
<br />      <dob/>
<br />    </contact>
<br />  </records>
<br /></contacts>
<br /></pre>
<br />
<br />*Creating a new Dynarex document*
<br /><code>
<br />require 'builder'
<br />
<br />def dynarex(s)
<br />  ptrn = %r((\w+)\[?([^\]]+)?\]?\/(\w+)\(([^\)]+)\))
<br />  root_name, raw_summary, record_name, raw_fields = s.match(ptrn).captures
<br />  summary, fields = [raw_summary || '',raw_fields].map {|x| x.split(/,/).map &:strip}  
<br />
<br />  xml = Builder::XmlMarkup.new( target: buffer='', indent: 2 )
<br />  xml.instruct! :xml, version: "1.0", encoding: "UTF-8"
<br />
<br />  xml.send root_name do
<br />    xml.summary do
<br />      summary.each do |item|        
<br />        xml.send item
<br />      end
<br />      xml.recordx_type 'dynarex'
<br />      xml.format_mask fields.map {|x| "[!%s]" % x}.join(' ')
<br />      xml.schema s
<br />    end
<br />    xml.records
<br />  end
<br />
<br />  buffer
<br />end
<br />
<br />s = "contacts[title,description]/contact(name,age,dob)"
<br />dynarex = dynarex(s)
<br />puts dynarex
<br /></code>
<br />output:
<br /><pre>
<br /><?xml version="1.0" encoding="UTF-8"?>
<br /><contacts>
<br />  <summary>
<br />    <title/>
<br />    <description/>
<br />    <recordx_type>dynarex</recordx_type>
<br />    <format_mask>[!name] [!age] [!dob]</format_mask>
<br />    <schema>contacts[title,description]/contact(name,age,dob)</schema>
<br />  </summary>
<br />  <records/>
<br /></contacts>
<br /></pre><img src="http://feeds.feedburner.com/~r/dzone/snippets/~4/ys_emAYIy8k" height="1" width="1" /><p><strong>Read more:</strong> <a class="rssreadon" rel="external" title="Creating a Dynarex schema from a 1-line string" href="http://feeds.dzone.com/~r/dzone/snippets/~3/ys_emAYIy8k/11299" target="_blank">http://feeds.dzone.com/~r/dzone/snippets/~3/ys_emAYIy8k/11299</a></p>

		
				
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