Re: Passing XML back and forth with RPG and .NET

[Scott Klement <rpg400-l@xxxxxxxxxxxxxxxx>]

I would have the .NET invoke the RPG via HTTP and send the XML document 
as POST data.  Have the RPG return it's response the same way.  No need 
to put the XML data into a file at all.

In the event that you need to use XML-INTO or XML-SAX and are on V5R4 or 
earlier (and therefore have to cope with the annoying 64k limit) I would 
have the RPG temporarily throw the XML data into a user space, and parse 
the user space.  (Make sure you set unused data in the user space to 
blanks.)

User spaces can be parsed by XML-INTO/XML-SAX via the doc=file and 
giving a filename of /QSYS.LIB/QTEMP.LIB/WHATEVER.USRSPC -- and user 
spaces are very fast.


Mike wrote:
> I am at a loss here of a best-practice to pass XML back and forth with RPG
> and C#.NET. Originally, I was going to use a temp physical file in QTEMP,
> but it seems to be that there should be a better way. The temp file has one
> line of the document in one record of the file. To me this seems to add a
> lot of extra work that really shouldn't be needed. I am looking for a
> two-way communication.
>
> One thought is to pass a 32000 char parameter back and forth, but is that
> really a good idea? What happens if the document happens to be bigger than
> that? I don't think I would hit that limit so maybe I would be fine?
>
> What about creating a temp IFS file? That seems like more work than is
> needed as well.
>
> What are your thoughts?
>
> Obviously, both the RPG and C# programs will be reading and processing the
> XML document.
>
> I have x-post this on systemidotnet as well to get both sides. I hope David
> doesn't mind.
>
> --
> Mike Wills
> http://mikewills.info
> P: (507) 933-0880 | Skype: koldark