Re: Varying fields in a data structure

[Charles Wilt <charles.wilt@xxxxxxxxx>]

You've got your answer...

But wanted to add that I'd reconsider building a DS to store the data from
the XML.

If you're planning to use XML-INTO, don't.  For simple docs, it's great.
Not so much for complex ones.  Instead, use the SAX Parser; especially if
you're only really interested in part of the document.

If you really need all the data, consider looking into the various XML SQL
functions built into the DB now-a-ways.

In particular, if the XML doc contains RDB data, take a look at
XDBDECOMPXML()
http://daniel-vesely.blogspot.com/2012/02/xml-decomposition-on-ibm-i71.html

Also the XMLTABLE() function...

Charles





On Tue, May 17, 2016 at 4:14 PM, John R. Smith, Jr. <
smith5646midrange@xxxxxxxxx> wrote:

> I am building a very complicated (some might say convoluted) data structure
> in an RPG program to handle an XML document (the XSD is a couple thousand
> lines).  It will have multiple levels of nested data structures and
> multiple
> dimensions on some of the levels.
>
>
>
> My question is if I create a data structure like shown below, since Field1
> and Field2 are varying, is my data structure always consuming 514 bytes as
> it shows in the compile listing or if I store "Hello" in Field1 and "World"
> in Field2, is it only using 14 bytes?  I'm trying to figure out if I can
> use
> a default length of maybe 255 or if I should spend the time trying to
> figure
> out what the max size of each field should be.
>
>
>
> Program
>
> d Data            ds
>
> d  Field1                      255    varying
>
> d  Field2                      255    varying
>
>
>
> Compile listing
>
> DATA              DS(514)
>
> FIELD1            A(255)
>
>                   VARYING(2)
>
> FIELD2            A(255)
>
>                   VARYING(2)
>
> --
> This is the RPG programming on the IBM i (AS/400 and 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.
>
> Please contact support@xxxxxxxxxxxx for any subscription related
> questions.