Re: Retrieving integer parameter after JT400 ProgramCall?

James and Joe,

Other than decoupling the program call by adding another layer, what are the
other advantages for calling via JDBC? Not to say I won't use the stored
procedure in the future but using ProgramCall appeared straightforward and I
was 90% there. The last 10% is a bear though.

For what it's worth, I got the program working in 20 minutes after looking
at an AS400Bin4 example. The two things I had to change was making
parmList[1] output only and adding conversion code for AS400Bin4 to an
integer.

Here is the relevant snippet:

// Create field types for parameters.
AS400Text txt5 = new AS400Text(5);
AS400Bin4 bin4 = new AS400Bin4();
byte[] b = bin4.toBytes(nextSequence);

// Create parameter array and populate.
ProgramParameter[] parmList = new ProgramParameter[2];
parmList[0] = new ProgramParameter(
txt5.toBytes(vanguardLocation),5);
parmList[1] = new ProgramParameter(4);

// Set up program call and run.
ProgramCall pgm = new ProgramCall(sys,
"/QSYS.LIB/LG.LIB/INCGLJSEQ.PGM", parmList);
if (pgm.run() != true) {
AS400Message[] messageList = pgm.getMessageList();
} else {
AS400Bin4 bin4Converter = new AS400Bin4();
byte[] data = parmList[1].getOutputData();
nextSequence = bin4Converter.toInt(data);
nextSequenceStr = Integer.toString(nextSequence);

System.out.println("Output Data 0: " +
(String)txt5.toObject( parmList[0].getOutputData() ) );
System.out.println("Output Data 1: " + nextSequenceStr);
sys.disconnectService(AS400.COMMAND);
}

With the outputs for three runs:
Output Data 0: WV
Output Data 1: 25672

Output Data 0: WV
Output Data 1: 25673

Output Data 0: WV
Output Data 1: 25674

Now all I have left is parameterize some of the hardcoded values.

Thanks everyone for pointing me in the right direction and advice. The tool
I'm using (Extol Business Integrator) is written in and loves Java, so I'll
be slowly learning Java as I go!

--Loyd




On Tue, Oct 27, 2009 at 7:02 PM, James Perkins <jrperkinsjr@xxxxxxxxx>wrote:

You need the AS400Bin4 object then. Just Google for it and you will see
plenty of examples.

Since though you say SQL is already able to call it, why can't you just
call
it from SQL via JDBC?
--
James R. Perkins
http://twitter.com/the_jamezp


On Tue, Oct 27, 2009 at 16:29, Loyd Goodbar <loyd@xxxxxxxxxxxxxx> wrote:

Dan,

The numeric in RPG is definitely 10i 0 (integer, 4b0, etc.).

d incgljseq pr extpgm('INCGLJSEQ')
d inlocation 5a const
d outuseseq 10i 0

I used a prototype instead of *ENTRY PLIST.

A testing program and SQL external procedure both call this program
successfully. Due to other limitations (unrelated to RPG or Java), I need
to
call the program from Java.

Thanks,
Loyd

2009/10/27 Dan Kimmel <dkimmel@xxxxxxxxxxxxxxx>

If you are using a numeric field from RPG most likely it is
AS400ZonedDecimal or AS400PackedDecimal. From your description of the
characters, I'd bank on packed. Probably 3/0 (three positions, zero

decimal

positions). Something like this

BigDecimal result = (BigDecimal)new
AS400PackedDecimal(3,0).toObject(parmList[0].getOutputData());

I'm working from memory here, but I believe the java object returned by

the

toObject of AS400PackedDecimal is BigDecimal.

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