RE: Special file parameter issue

[<Rick.Chevalier@xxxxxxxxxxxxxxx>]

Mark,

There aren't read triggers, at least not at 5.4.  On to the next idea.

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Mark S. Waterbury
Sent: Thursday, September 23, 2010 9:15 PM
To: RPG programming on the IBM i / System i
Subject: Re: Special file parameter issue

  Hi, Rick:

Perhaps a SPECIAL file is not the right tool for the job?   Others have
mentioned in the past that SPECIAL files were supposedly designed to only support the model of a "sequential" file, not a keyed file, using CHAIN, etc. :-o

Suppose you create an empty version of the file in question, and attach insert, delete and update triggers to that copy of the file... then, your existing program can continue to write, update or delete to a "real" file that has exactly the same record formats, layouts., etc., and the trigger programs can take care of splitting up the various data fields into one or more alternate files.

Is this not one of the scenarios that triggers were designed for?

All the best,

Mark S. Waterbury

> On 9/23/2010 2:28 PM, Rick.Chevalier@xxxxxxxxxxxxxxx wrote:
> I am attempting to use a special file program to handle I/O for a file conversion we are contemplating.  The issue I am having is that the parameters aren't changing between a write and a read operation.  I want to test the error handling if a read operation fails.  I can't get it to fail because the parms passed are the same ones I used to add a record even though I explicitly change them in the caller.  Any ideas?
>
> Caller:
> fLNP00507 cf e Special PgmName('LNP00507R')
>
> d TEST507 pr ExtPgm('TEST507')
>
> /Free
>
> lxBk = 8;
> lxMDte = 092210;
> lxMemo = 'Special file test memo';
> lxNote = 123456789;
> lxRec = 1;
> Write LNP0057;
>
> lxMemo = ' ';
>
> lxNote = 3;
> Read LNP00507;
>
> If Not %EOF(LNP00507);
> Dsply %Subst(lxMemo :1 :25);
> EndIf;
>
> *InLR = *On;
>
> /End-Free
>
> Special File program
> d LNP00507R pr ExtPgm('LNP00507R')
> d Action 1a Const
> d Status 1a
> d Error 5s 0
> d RecData LikeDS(LNP00507DA)
> // Layout of LNP00507 for received data format d LNP00507DA e ds
> ExtName(LNP00507) d Based(Template_Ptr)
>
> // Format of output record
> d SRVMEMOS e ds
>
> // Constanst for possible actions
> d OPEN_Request c 'O'
> d CLOSE_Request c 'C'
> d READ_Request c 'R'
> d WRITE_Request c 'W'
> d DELETE_Request c 'D'
> d UPDATE_Request c 'U'
> //-------------------------------------------------------------------
> p File_Add b
> d File_Add pi
>
> /Free
>
> LoanNumber = RecData.lxNote;
> MemoType = 'LNP00507';
> MemoTmsp = %TimeStamp(%Date(RecData.lxMDte :*MDY)); FiservID =
> %EditC(RecData.lxMDte :'X') + %EditC(RecData.lxRec :'X') SrvMemLen =
> 70; SrvMemCnt = 1; SrvMemo = %TrimR(RecData.lxMemo); AddUser =
> sdsUser; AddTmsp = %Timestamp(); AddProc = %TrimR(sdsPgmLib) + '/' +
> %TrimR(sdsProcPgm) + '.' +
> %TrimR(sdsProcMod) + '(File_Add)';
>
> Exec SQL
> Insert into SRVMEMOS
> (LOAN_NUMBER, SRV_MEMO_TYPE, SRV_MEMO_TIMESTAMP, SRV_MEMO_FISERV_ID,
> SRV_MEMO_LINE_LEN, SRV_MEMO_LINE_CNT, SRV_MEMO, ADD_USER,
> ADD_TIMESTAMP, ADD_PROC) Values (:LoanNumber, :MemoType, :MemoTmsp,
> :FiservID, :SrvMemLen, :SrvMemCnt, :SrvMemo, USER, CURRENT_TIMESTAMP,
> :AddProc);
>
> If SQLState<>  Success;
> Status = '2'; // Error condition
> Error = %Abs(SQLCod);
> EndIf;
>
> /End-Free
>
> p File_Add e
> //--------------------------------------------------------------------
> ---
> p File_Read b
> d File_Read pi
>
> /Free
>
> MemoType = 'LNP00507';
> FiservID = %EditC(RecData.lxMDte :'X') + %EditC(RecData.lxRec :'X');
>
> Exec SQL
> Select
> SRV_MEMO_FISERV_ID, SRV_MEMO_LINE_LEN, SRV_MEMO_LINE_CNT, SRV_MEMO
> into :FiservID, :SrvMemLen, :SrvMemCnt, :SrvMemo from SRVMEMOS where
> Loan_Number = :RecData.lxNote and Srv_Memo_Type = MemoType and
> Srv_Memo_Fiserv_ID = FiservID;
>
> If SQLState<>  Success;
> Status = '1'; // End of file
> Clear RecData;
> EndIf;
>
> /End-Free
>
> p File_Read e
>
> Rick Chevalier
> IT Software Solutions - Loan Servicing
>
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