Parsing

Parsing

Here is how to parse an X12/997 message (the source is in example/parse.rb):

require 'x12'

# Read message definition and create an actual parser by compiling the XML file
parser = X12::Parser.new('misc/997.xml')

# Define a test message to parse
m997='ST*997*2878~AK1*HS*293328532~AK2*270*307272179~'\
'AK3*NM1*8*L1010_0*8~AK4*0:0*66*1~AK4*0:1*66*1~AK4*0:2*'\
'66*1~AK3*NM1*8*L1010_1*8~AK4*1:0*66*1~AK4*1:1*66*1~AK3*'\
'NM1*8*L1010_2*8~AK4*2:0*66*1~AK5*R*5~AK9*R*1*1*0~SE*8*2878~'

# Parse the message
r = parser.parse('997', m997)

# Access components of the message as desired.  Whole ST segment: -> ST*997*2878~
puts r.ST

# One filed, Group Control Number of AK1 -> 293328532
puts r.AK1.GroupControlNumber

# Individual loop, namely, third L1010 sub-loop of L1000 loop: -> AK3*NM1*8*L1010_2*8~AK4*2:0*66*1~
puts r.L1000.L1010[2]

# First encounter of Data Element Reference Number of the first L1010 sub-loop of L1000 loop -> 66
puts r.L1000.L1010.AK4.DataElementReferenceNumber

#Number of L1010 sub-loops in L1000 loop -> 3
puts r.L1000.L1010.size