|
Jon,
I only used this simple SQL statement because I wanted to show how to write
into the IFS with embedded SQL.
But iIf you want to have a more complex SQL statement that generates an XML
document that is written with a single SQL-Statement into the IFS here is a
more complex one:
Joining Address Master, Order Header, Order Detail and Item master tables:
With -- 1. Address information:
-- <Customer
CustNo="xx"><Name></Name><Street></Street><ZipCode></ZipCode><City></City>
-- </Customer>
Address as (Select CustNo, XMLElement(Name "Customer",
XMLAttributes(Trim(CustNo) as "CustNo"),
XMLConcat(XMLElement(Name "Name",
Trim(Trim(CustName1) concat ' ' concat Trim(CustName2))),
XMLForest(Trim(Street) as
"Street",
Trim(ZipCode) as
"ZipCode",
Trim(City) as
"City"))) CustXML
From Addressx),
-- 2. Order Header Information:
-- <Mandant></Mandant><OrderNo></OrderNo>
--
<DeliveryDate><DeliveryDate><OrderType></OrderType><DeliveryTerms></Delivery
Terms>
Header as (Select Company, OrderNo, CustNo,
XMLForest(Company as "Mandant",
OrderNo as "OrderNo") OrderNoXML,
XMLConcat(XMLElement(Name "DeliveryDate", Char(DelDate,
ISO)),
XMLElement(Name "OrderType",
Case When OrderType = 'DO'
Then 'Domestic'
When OrderType = 'EX'
Then 'Export'
When OrderType = 'UO'
Then 'Express'
else '???' End),
XMLElement(Name "DeliveryTerms",
Case When DelTerms = 'CPT'
Then 'Delivered Free'
When DelTerms = 'EXW'
Then 'Ex Works'
Else '???' End))
HdrAddXML
From OrderHdrX
Where DelDate between '2009-12-01' and '2009-12-31'),
-- 3. Joining Order Header and Address Information (CTE No. 1 and 2)
HdrAddr as (Select Company, OrderNo, XMLConcat(OrderNoXML, CustXML,
HdrAddXML) OrderXML
from Header Join Address Using(CustNo)),
-- 4. Item Information
-- <Item ItemNo=""><ItemDescription><ItemDescription><PricePerUnit
Currency=""></PricePerUnig>
-- </Item>
Item as (Select i.*,
XMLElement(Name "Item" ,
XMLAttributes(Trim(ItemNo) as "ItemNo"),
XMLConcat(XMLElement(Name "ItemDescription",
Trim(Descript)),
XMLElement(Name "PricePerUnit",
XMLAttributes('EUR' as
"Currency"),
Price))) ItemXML
from ItemMastX i),
-- 5. Order Detail Information
-- <Position PosNo=""><Item Information from CTE No. 4=Item>
--
<DeliveryQuantity></DeliveryQuantity><DeliveryValue
Currency""></DeliveryValue>
-- </Position>
Position as (Select Company, OrderNo,
XMLElement(Name "Position",
XMLAttributes(OrderPos as "PosNo"),
XMLConcat(ItemXML,
XMLElement(Name "DeliveryQuantity",
DelQty),
XMLElement(Name "DeliveryValue",
XMLAttributes('EUR' as
"Currency"),
DelQty * Price)))
PosXML
From OrderDetX join Item using (Company, ItemNo)
Where DelQty > 0),
-- 6. Concatenating Order Details per Order
-- <Positions><Order Position Information - CTE No. 5>
-- </Positions>
AllPos as (Select Company, OrderNo,
XMLElement(Name "Positions", XMLAGG(PosXML))
PosOrderNoXML
from Position
Group By Company, OrderNo),
-- 7. Joining Order Header / Address / Order Position and Item
information
-- <Order><OrderHeader and Address information - CTE No. 3>
-- <Order Positions and Item information - CTE No. 5>
-- </Order>
Order as (Select XMLElement(Name "Order",
XMLConcat(OrderXML, PosOrderNoXML))
OrdersXML
from HdrAddr join AllPos using (Company, OrderNo))
-- Final Select Statement
-- Concatenating Order Informationen No. 7 and generating an XML Document
Select xmldocument(xmlElement(Name "Orders", XMLAGG(OrdersXML)))
From Order;
An here is the Result (I only copied the first Order)
<Orders>
<Order>
<Mandant>10</Mandant>
<OrderNo>BNR2009-12-15/1</OrderNo>
<Customer CustNo="10003">
<Name>Goldbach GmbH
***********Sonder-Aktion******</Name>
<Street>Hanauerstr. 21</Street>
<ZipCode>63755</ZipCode>
<City>Alzenau</City>
</Customer>
<DeliveryDate>2009-12-01</DeliveryDate>
<OrderType>Domestic</OrderType>
<DeliveryTerms>Delivered Free</DeliveryTerms>
<Positions>
<Position PosNo="1">
<Item ItemNo="CF001">
<ItemDescription>Champagne flute
1</ItemDescription>
<PricePerUnit
Currency="EUR">,60</PricePerUnit>
</Item>
<DeliveryQuantity>20</DeliveryQuantity>
<DeliveryValue
Currency="EUR">12,00</DeliveryValue>
</Position>
<Position PosNo="2">
<Item ItemNo="CF003">
<ItemDescription>Champagne flute
3</ItemDescription>
<PricePerUnit
Currency="EUR">1,45</PricePerUnit>
</Item>
<DeliveryQuantity>24</DeliveryQuantity>
<DeliveryValue
Currency="EUR">34,80</DeliveryValue>
</Position>
<Position PosNo="4">
<Item ItemNo="BS002">
<ItemDescription>Book shelves
2</ItemDescription>
<PricePerUnit
Currency="EUR">66,15</PricePerUnit>
</Item>
<DeliveryQuantity>40</DeliveryQuantity>
<DeliveryValue
Currency="EUR">2646,00</DeliveryValue>
</Position>
</Positions>
</Order>
Mit freundlichen Grüßen / Best regards
Birgitta Hauser
"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok)
"What is worse than training your staff and losing them? Not training them
and keeping them!"
-----Ursprüngliche Nachricht-----
Von: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] Im Auftrag von Jon
Paris
Gesendet: Wednesday, 20.8 2014 17:22
An: RPG programming on the IBM i (AS/400 and iSeries)
Betreff: Re: Writing XML with RPGLE V7R1M0
Your example does seem to work well Birgitta - but even the simplest of XML
documents usually requires a bit more "shape". The script as given (modified
a bit to fit a DB I had to hand) produces this:
<Customers>
<Customer>
<ID>A0011</ID>
<PersName>Acme Best Brew </PersName>
<ZipCode>0</ZipCode>
<Zip-Plus>0</Zip-Plus>
<City>Acme </City>
</Customer>
... repeat Customer element
But what I wanted was:
<Customers>
<Customer>
<ID>A0011</ID>
<PersName>Acme Best Brew </PersName>
<Address> <<<< New compound element
<ZipCode>55901</ZipCode>
<Zip-Plus></Zip-Plus>
<City>Acme </City>
</Address>
</Customer>
And I have looked throughout the IBM and other examples and have not been
able to see how this is done. In all the other approaches described in this
thread providing this "shape" is trivial. I'd love to know how the SQL
approach handles it.
Also Zip-Plus is commonly an optional element and should not be present when
empty - how do I achieve that?
On 2014-08-20, at 12:57 AM, Birgitta Hauser <Hauser@xxxxxxxxxxxxxxx> wrote:
Hi Brian,
You may check the following article:
Using RPG to exploit IBM DB2 XML support
http://www.ibm.com/developerworks/ibmi/library/i-using-rpg/index.html
Using embedded SQL or better Reference Files is an even easier way for
writing the result to the IFS. (The most complex part is building the
SQL statement for generating the XML document.
The following souce code is a complete program for generating an XML
document and writing this document directly to the IFS:
D MyXMLDoc S SQLTYPE(XML_CLOB_File)
D
//********************************************************************
***
/Free
Exec SQL Set Option Commit=*None, DatFmt=*ISO, CloSQLCsr=*EndActGrp;
destroy the original message and all copies.
Clear MyXMLDoc;
MyXMLDoc_Name = '/home/Hauser/WrtSQLXML.xml';
MyXMLDoc_NL = %Len(%Trim(MyXMLDoc_Name));
MyXMLDoc_FO = SQFOVR; //Replace if exists
Exec SQL
Select XmlDocument
(xmlgroup(EmployeeNo as "PersNo",
Trim(Trim (FirstName) concat ' ' concat
Trim(Name)) as "PersName",
Address as "Street",
ZipCode as "ZipCode",
City as "City"
Order By City Desc, Name
Option Row "Employee"
Root "Staff"))
into :MyXMLDoc
From LobStaff;
If SQLCODE < *Zeros;
Dsply 'Error occured';
else;
Dsply 'XML Document generated';
EndIf;
*InLR = *On;
/End-Free
Mit freundlichen Grüßen / Best regards
Birgitta Hauser
"Shoot for the moon, even if you miss, you'll land among the stars."
(Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok)
"What is worse than training your staff and losing them? Not training
them and keeping them!"
-----Ursprüngliche Nachricht-----
Von: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] Im Auftrag von
Brian Stapleton
Gesendet: Tuesday, 19.8 2014 21:56
An: rpg400-l@xxxxxxxxxxxx
Betreff: Writing XML with RPGLE V7R1M0
Good Afternoon
I need to learn how to write XML documents with RPGLE V7R1M0 onto our IFS.
How can I educate myself on doing this?
I would prefer to stay as native RPGLE as possible, and am not looking
to purchase a 3rd party solution.
Brian Stapleton
Information Services
Carhartt, Inc
5750 Mercury Drive
Dearborn, MI 48126
Desk - 313-749-6586
Fax - 313-271-3455
BStapleton@xxxxxxxxxxxx<mailto:BStapleton@xxxxxxxxxxxx>
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Jon Paris
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www.SystemiDeveloper.com
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