Class: EDI::Message

Inherits:
Object
  • Object
show all
Defined in:
lib/edi4r/rexml.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.parse_xml(p, xmsg) ⇒ Object 



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# File 'lib/edi4r/rexml.rb', line 156

def Message.parse_xml(p, xmsg)
  _header    = xmsg.elements["Header/Segment"]
  _trailer   = xmsg.elements["Trailer/Segment"]

  msg = p.new_message( Segment.parse_xml( p, _header ) )
  msg.header  = Segment.parse_xml( msg, _header  ) if _header

  xmsg.elements.each('descendant::Segment') do |xel|
    next if xel.parent.name =~ /Header|Trailer/
    msg.add Segment.parse_xml(msg, xel)
  end
  msg.trailer = Segment.parse_xml( msg, _trailer ) if _trailer

  msg
end

Instance Method Details

#to_xml(xel_parent) ⇒ Object

Build an XML document tree from

a) the linear sequence of segments
b) metadata from the standards DB (attached to each segment)

Track xml parent element for segments by level

Add ‘header’ and ‘trailer’ wrapper element around

header and trailer, if any

Trigger segments and their depending segments get wrapped in a ‘SegmentGroup’ element that bears the group name as its name.



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# File 'lib/edi4r/rexml.rb', line 185

def to_xml( xel_parent )
  xel_msg = REXML::Element.new( 'Message' ) 
  xel_parent.elements << xel_msg

  # Default parent is XML message element itself
  #
  xel_parent_stack = Hash.new(xel_msg)

  xhd = to_xml_header( xel_msg )

  each do |seg|
    next if seg.empty?
    if seg.is_tnode?
      xgrp = REXML::Element.new( 'SegmentGroup' )
      xgrp.attributes["name"] = seg.sg_name
      xel_parent_stack[seg.level - 1] << xgrp
      seg.to_xml( xgrp )
      xel_parent_stack[seg.level] = xgrp
    else
      seg.to_xml( xel_parent_stack[seg.level - 1] )
    end
  end

  xtr = to_xml_trailer( xel_msg )
  [xel_msg, xhd, xtr]
end