RE: XML-SAX not quite right

[Sharon <sklosinski@xxxxxxxxxxx>]

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
>
>
>
> _________________________________________________________________
> It's simple! Sell your car for just $40 at CarPoint.com.au
> http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Fsecure%2Dau%2Eimrworldwide%2Ecom%2Fcgi%2Dbin%2Fa%2Fci%5F450304%2Fet%5F2%2Fcg%5F801459%2Fpi%5F1004813%2Fai%5F859641&_t=762955845&_r=tig_OCT07&_m=EXT
> -- 
> This is the RPG programming on the AS400 / iSeries (RPG400-L) mailing list
> To post a message email: RPG400-L@xxxxxxxxxxxx
> To subscribe, unsubscribe, or change list options,
> visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
> or email: RPG400-L-request@xxxxxxxxxxxx
> Before posting, please take a moment to review the archives
> at http://archive.midrange.com/rpg400-l.

_________________________________________________________________
Color coding for safety: Windows Live Hotmail alerts you to suspicious email.
http://windowslive.com/Explore/Hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_safety_112008