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I am also seeing that the stringPtr in one of my passes is this value: STRINGPTR = SPP:91630280040B50FE instead of the element value.

Need to convert something?


From: sklosinski@xxxxxxxxxxx
To: rpg400-l@xxxxxxxxxxxx
Subject: RE: XML-SAX not quite right II
Date: Wed, 12 Nov 2008 10:17:23 -0500



Hello again, I am trying to understand the XML_CHARS functionality and still have a snag.

I have this code:


when event = *XML_CHARS;
eventval = event + 1;
if %subst(chars : eventval : stringLen) = 'DataArea';
pathvalue = pathvalue;
endif;

I look at chars at this point and it's value is this:




EVAL chars
CHARS =
....5...10...15...20...25...30...35...40...45...50...55...60
1 ' <DataArea> <storeNumber>7</storeNumber> <trans'
61 'Date>20081028</transDate> <localTransactionNumber>52221'
121 '433</localTransactionNumber> <centralTransactionNumber>'
181 '123457</centralTransactionNumber> <Status>I</Status> '
241 ' <AssociateID>2257752</AssociateID> <refundPolicy>D</'
301 'refundPolicy> <TotalCredit></TotalCredit> <Convers'
361 'ionCredit>44.50</ConversionCredit> <Customer> <C'
421 'ustomerID>1111333444</CustomerID> <FirstName>Mickey</'
481 'FirstName> <LastName>Mouse</LastName> </Customer'
541 '> <Item> <ItemStatus>R</ItemStatus> <SKU>'
601 '647182</SKU> <Quantity>1</Quantity> <CreditAmo'

The first '<' is actually at position 5, did not reproduce here exactly.

So when I get to my first hit on XML_CHARS, event has a value of 5, so I add one to get it to the beginning of my text I add one to it, so it should be on the 'D' of DataArea. My stringlen = 8, so I am figuring that I should get a hit on it equalling my If value of 'DataArea'. It does not.


Still don't have something correct with this.
What parameter of the procedure houses the actual value of the event?


Thanks

Sharon




From: sklosinski@xxxxxxxxxxx
To: rpg400-l@xxxxxxxxxxxx
Subject: RE: XML-SAX not quite right
Date: Wed, 12 Nov 2008 08:06:00 -0500


Hi Larry, yes I get this, I will take your advice as well as Jon's and give this another shot.

THANKS so much for your responses.

Sharon



From: larry_ducie@xxxxxxxxxxx
To: rpg400-l@xxxxxxxxxxxx
Subject: Re: XML-SAX not quite right
Date: Tue, 11 Nov 2008 23:50:44 +0000


Hi Sharon,

This SAX parser works by reading through your xml document and firing a call to your handler procedure every time an event occurs.

You have code for some events, but you are missing a crucial one - *XML_CHARS.

Consider the following trivial example:

<?xml version="1.0" ?>
<root>
<SKU>PT0110</SKU>
</root>

you should get the following calls:

*XML_START_DOCUMENT
*XML_START_ELEMENT - value passed is 'root'
*XML_START_ELEMENT - value passed is 'SKU'
*XML_CHARS - value passed is 'PT0110'
*XML_END_ELEMENT - value passed is 'SKU'
*XML_ENDELEMENT - value passed is 'root'
*XML_END_DOCUMENT

You are not handling what happens when the *XML_CHARS event occurs.

Also, you will not know what element the *XML_CHARS relates to unless you hold a variable telling you what the last *XML_START_ELEMENT had as the value. I would suggest you define a static variable in your sub-proc and set it to the value of the element name during the *XML_START_ELEMENT event and clear it during the *XML_END_ELEMENT. This is not the best way to go for more complicated documents though.

If you are to do this in a robust manner you should have a static variable containing the full path to your current element and add elements to the path in *XML_START_ELEMENT and remove them in *XML_END_ELEMENT.

For the above list of events you would set your path to look like this:
*XML_START_DOCUMENT - path = '/'

*XML_START_ELEMENT - path = 'root'

*XML_START_ELEMENT - path = '/root/SKU'

*XML_CHARS - path is unchanged but you get the value of SKU here as you are in /root/SKU

*XML_END_ELEMENT - path = '/root'

*XML_END_ELEMENT - path = '/'

*XML_END_DOCUMENT path = ''

Thus you would store the value of the SKU when a *XML_CHARS event is fired and your path = '/root/SKU'.

Hope this makes sense.

Cheers

Larry Ducie



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