Date:         Tue, 17 Nov 2009 10:03:19 +0000
Reply-To:     CICS List <CICS-L@LISTSERV.UGA.EDU>
Sender:       CICS List <CICS-L@LISTSERV.UGA.EDU>
From:         Paul Cooper <PCOOPER@UK.IBM.COM>
Subject:      Re: How do __you__ read non-DB non-XML files in Java?
In-Reply-To:  <1258424095.2882.57.camel@mckown5.johnmckown.net>
Content-Type: multipart/alternative;

There are two technologies that I know of for working with COBOL style
records in Java. The first is JZOS (though you need a recent version if
you want the utilities for handling record based data). The second is the
J2C tooling that's available in RAD/RDz and will probably be familiar to
developers who work with the CTG. In both cases there is off-line tooling
for generating Java classes that in turn can marshall/demarshall data
to/from a byte[] that conforms to the structure of the data record. So the
Java programmer gets a simple API to use with getters/setters to interact
with the underlying fields in the record.

The recent update to the Java in CICS Redbook discusses both technologies,
so you could take a look there for some examples:
http://www.redbooks.ibm.com/abstracts/sg245275.html . See in particular
section 7.3.

Paul Cooper,
IBM United Kingdom Limited



From:
John McKown <joarmc@SWBELL.NET>
To:
CICS-L@LISTSERV.UGA.EDU
Date:
17/11/2009 02:18
Subject:
Re: How do __you__ read non-DB non-XML files in Java?
Sent by:
CICS List <CICS-L@LISTSERV.UGA.EDU>



On Mon, 2009-11-16 at 18:08 -0600, Andrew Joseph wrote:
> We use a utility called JZOS here and we've used it to read PS files.
> I have never tried to read a VSAM file so far because nobody here as
> asked for it - Knock on wood....They will ask for it tomorrow :-(
> I think if you are on Java 5.0, you'll have JZOS included in your IBM
> JDK and you don't have to download it.  I think it does contain sample
> programs, if not you can Google and find samples.
> The JZOS forum is at http://dovetail.com/forum/viewforum.php?f=1 and
> you'll find a lot of information there.

I've used JZOS to read z/OS legacy datasets. But it does not give me an
easy way to split the record into fields. I would really like something
like a COBOL structure or a C struct, but I think that I'm not going to
get it.

--
John McKown
Maranatha! <><








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