The following example simulates the building of a purchase order in a group data item, and generates an XML version of that purchase order.
Program XGFX uses XML GENERATE to produce XML output in elementary data item xmlPO from the source record, group data item purchaseOrder. Elementary data items in the source record are converted to character format as necessary, and the characters are inserted in XML elements whose names are derived from the data-names in the source record.
XGFX calls program Pretty, which uses the XML PARSE statement with processing procedure p to format the XML output with new lines and indentation so that the XML content can more easily be verified.
Identification division.
Program-id. XGFX.
Data division.
Working-storage section.
01 numItems pic 99 global.
01 purchaseOrder global.
05 orderDate pic x(10).
05 shipTo.
10 country pic xx value 'US'.
10 name pic x(30).
10 street pic x(30).
10 city pic x(30).
10 state pic xx.
10 zip pic x(10).
05 billTo.
10 country pic xx value 'US'.
10 name pic x(30).
10 street pic x(30).
10 city pic x(30).
10 state pic xx.
10 zip pic x(10).
05 orderComment pic x(80).
05 items occurs 0 to 20 times depending on numItems.
10 item.
15 partNum pic x(6).
15 productName pic x(50).
15 quantity pic 99.
15 USPrice pic 999v99.
15 shipDate pic x(10).
15 itemComment pic x(40).
01 numChars comp pic 999.
01 xmlPO pic x(999).
Procedure division.
m.
Move 20 to numItems
Move spaces to purchaseOrder
Move '1999-10-20' to orderDate
Move 'US' to country of shipTo
Move 'Alice Smith' to name of shipTo
Move '123 Maple Street' to street of shipTo
Move 'Mill Valley' to city of shipTo
Move 'CA' to state of shipTo
Move '90952' to zip of shipTo
Move 'US' to country of billTo
Move 'Robert Smith' to name of billTo
Move '8 Oak Avenue' to street of billTo
Move 'Old Town' to city of billTo
Move 'PA' to state of billTo
Move '95819' to zip of billTo
Move 'Hurry, my lawn is going wild!' to orderComment
Move 0 to numItems
Call 'addFirstItem'
Call 'addSecondItem'
Move space to xmlPO
Xml generate xmlPO from purchaseOrder count in numChars
Call 'pretty' using xmlPO value numChars
Goback
.
Identification division.
Program-id. 'addFirstItem'.
Procedure division.
Add 1 to numItems
Move '872-AA' to partNum(numItems)
Move 'Lawnmower' to productName(numItems)
Move 1 to quantity(numItems)
Move 148.95 to USPrice(numItems)
Move 'Confirm this is electric' to itemComment(numItems)
Goback.
End program 'addFirstItem'.
Identification division.
Program-id. 'addSecondItem'.
Procedure division.
Add 1 to numItems
Move '926-AA' to partNum(numItems)
Move 'Baby Monitor' to productName(numItems)
Move 1 to quantity(numItems)
Move 39.98 to USPrice(numItems)
Move '1999-05-21' to shipDate(numItems)
Goback.
End program 'addSecondItem'.
End program XGFX.
Identification division.
Program-id. Pretty.
Data division.
Working-storage section.
01 prettyPrint.
05 pose pic 999.
05 posd pic 999.
05 depth pic 99.
05 element pic x(30).
05 indent pic x(20).
05 buffer pic x(100).
Linkage section.
1 doc.
2 pic x occurs 16384 times depending on len.
1 len comp-5 pic 9(9).
Procedure division using doc value len.
m.
Move space to prettyPrint
Move 0 to depth posd
Move 1 to pose
Xml parse doc processing procedure p
Goback.
p.
Evaluate xml-event
When 'START-OF-ELEMENT'
If element not = space
If depth > 1
Display indent(1:2 * depth - 2) buffer(1:pose - 1)
Else
Display buffer(1:pose - 1)
End-if
End-if
Move xml-text to element
Add 1 to depth
Move 1 to pose
String '<' xml-text '>' delimited by size into buffer
with pointer pose
Move pose to posd
When 'CONTENT-CHARACTERS'
String xml-text delimited by size into buffer
with pointer posd
When 'CONTENT-CHARACTER'
String xml-text delimited by size into buffer
with pointer posd
When 'END-OF-ELEMENT'
Move space to element
String '</' xml-text '>' delimited by size into buffer
with pointer posd
If depth > 1
Display indent(1:2 * depth - 2) buffer(1:posd - 1)
Else
Display buffer(1:posd - 1)
End-if
Subtract 1 from depth
Move 1 to posd
When other
Continue
End-evaluate
.
End program Pretty.
<purchaseOrder>
<orderDate>1999-10-20</orderDate>
<shipTo>
<country>US</country>
<name>Alice Smith</name>
<street>123 Maple Street</street>
<city>Mill Valley</city>
<state>CA</state>
<zip>90952</zip>
</shipTo>
<billTo>
<country>US</country>
<name>Robert Smith</name>
<street>8 Oak Avenue</street>
<city>Old Town</city>
<state>PA</state>
<zip>95819</zip>
</billTo>
<orderComment>Hurry, my lawn is going wild!</orderComment>
<items>
<item>
<partNum>872-AA</partNum>
<productName>Lawnmower</productName>
<quantity>1</quantity>
<USPrice>148.95</USPrice>
<shipDate> </shipDate>
<itemComment>Confirm this is electric</itemComment>
</item>
</items>
<items>
<item>
<partNum>926-AA</partNum>
<productName>Baby Monitor</productName>
<quantity>1</quantity>
<USPrice>39.98</USPrice>
<shipDate>1999-05-21</shipDate>
<itemComment> </itemComment>
</item>
</items>
</purchaseOrder>
related tasks
Processing XML input
related references
Operation of XML GENERATE
(COBOL for Windows Language Reference)