Re: Help needed with RPG prototypes and POI

["Beppe Costagliola" <beppecosta@xxxxxxxx>]

www.mcpressonline.com

----- Original Message ----- 
From: "John King" <jking@xxxxxxxxxxx>
To: <rpg400-l@xxxxxxxxxxxx>
Sent: Thursday, November 06, 2003 8:42 PM
Subject: Help needed with RPG prototypes and POI


> Hello, all:
>
> I need to create Excel workbooks in batch from RPG, and am just *this* far
> away from getting Geert Van Landeghem's tutorial on calling POI methods in
> RPG running. Two items have me completely stumped, though. Can someone
> please point me in the correct direction? See
> http://www.jasservices.com/articles/as400/001_genexcel.htm.
>
> 1) Using the example RPG at the bottom of his page, my compiler spits-up
on
> the "writeWB(wb:outFile);" statement, issuing a "*RNF7030 The name or
> indicator WRITEWB is not defined." error message. If I understand
correctly
> (and that is a big leap) it appears that "writeWB" is actually a Java
method
> and must be prototyped for RPG to call it. It seems like
> "writeWB(wb:outFile);" has two parms, so I prepared the following PR. Now
> the compiler complains about "*RNF5406 The call passed fewer parameters
than
> the prototype indicates are required." What am I misunderstanding about
Java
> prototypes?
>
>  * // WorkBook.write()
> D writeWB         PR                  EXTPROC(*JAVA
> D                                     :'org.apache.poi.hssf.usermodel-
> D                                     .HSSFWorkbook'
> D                                     :'write')
> D parm                            O   CLASS(*JAVA
> D                                     :'org.apache.poi.hssf.usermodel-
> D                                     .HSSFWorkbook')
> D parm                            O   CLASS(*JAVA
> D                                     :'java.io.FileOutputStream')
>
> 2) The program actually runs if all the POI-related lines are commented
out.
> An empty "foo.xls" file is created in the output directory so I know the
> java.lang.* and java.io.* functions work, but I receive the following
> runtime error when the program is run with the "wb = createWB()"
> uncommented.
> "Java exception "java.lang.NoClassDefFoundError:                         "
> "org/apache/commons/logging/LogFactory" when calling method "<init>" with"
> "signature "()V" in class "org.apache.poi.hssf.usermodel.HSSFWorkbook".  "
>
> The iSeries has JDK1.3 and runs V5R1 with recent PTFs. *SYS CLASSPATH is
set
> to ".:/JavaUtil/POI/POI.jar", and I can see that exact item (spelling and
> caps are correct) is present when I peek into POI.jar with WinZip.
Actually,
> I receive the same runtime message when the CLASSPATH is "Foo" or *NONE,
so
> it appears that RPG is ignoring the CLASSPATH entirely. Since the JVM is
> being started inside of RPG, is there some parameter that controls where
RPG
> resolves the CLASSPATH? Does anyone know of a way (example code would be
> greatly appreciated) to see what the CLASSPATH is during debug? Is there
> anything suspicious about the "signature ()" statement? Why do I have so
> many questions?
>
> Many thanks
> JK
>
>
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