Re: 32767 limit -- RPG400-L

Hello Andy,

When designing JDBCR4, I had to decide on some sort of a string size to return. In DB2 for IBM i, the maximum length of any (non-LOB) column is 32766 -- that's why I picked 32767, because I figured it was "big enough".

Also, return values like that tend to perform worse depending on their size. (This is why IBM added the RTNPARM keyword in the newer releases.) So I didn't want JDBC_GetCol() to return an especially large size, because it might kill performance.

However, this is not a physical limit of JDBC or RPG. It's purely a limit of the way I wrote the code. You could certainly change it (or even write your own routine that allows the contents of a column to be saved to a dynamically allocated pointer, thus allowing huge sizes even on older releases.)

On 4/9/2013 6:55 AM, Andy Thompson wrote:

I want to receive the contents of an XML variable whose content exceeds 32767 bytes into an RPGLE program parse it and do some updates. The XML could potentially be 500k to 2GB. This is stored as an XML type field on an MSSQL table.

So .. I tried using JDBC in and RPGLE program using JNI. My attempt as shown below.
The program works fine when the content is less than 32767 but fails on the XML-INTO when its bigger (RNX0353 reason 5)

Can anyone point me in the right direction ?

I should add we are running V7R1.

regards
Andy Thompson

D idata s sqltype(XML_DBCLOB:65535)

RS = JDBC_ExecPrepQry(PrepStm) ;
DoW (JDBC_NextRow(RS)) ;
iData = jdbc_getCol(RS : 1) ;
.
options = 'doc=string path=BOM/BO/OPOR/row ' +
'allowmissing=yes allowextra=yes case=any ns=remove';
xml-into rowOPOR %XML(%trim(iData) : options);
*** it Fails here because it truncates the XML at 32767 bytes ***
.

* Copyright (c) 2006-2008 Scott C. Klement
* All rights reserved.
P JDBC_GetCol B export
D JDBC_GetCol PI 32767A varying
D rs like(ResultSet)
D col 10I 0 value
D nullInd 1N options(*nopass:*omit)
D result s 32767A varying
D str s like(jstring)
D null s 1N inz(*OFF)
/free
jdbc_begin_object_group(5);
monitor;
str = getColString(rs: col);
if (str = *NULL);
result = '';
null = *ON;
else;
result = r(str);
endif;
on-error;
null = *ON;
result = '';
endmon;
jdbc_end_object_group();
if (%parms >= 3 and %addr(nullInd)<>*NULL);
nullInd = Null;
endif;
return result;
/end-free
P E

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