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  1.  Home
  2. RPG400-L
  3. April 2016

RE: XLS from RPGLE

I have seen that, but I don't know what spreadsheets do it, and which do not.

Mark Murphy
STAR BASE Consulting, Inc.
mmurphy@xxxxxxxxxxxxxxx


-----Darren Strong <darren@xxxxxxxxx> wrote: -----
To: "RPG programming on the IBM i \(AS/400 and iSeries\)" <rpg400-l@xxxxxxxxxxxx>
From: Darren Strong <darren@xxxxxxxxx>
Date: 04/07/2016 01:38PM
Subject: RE: XLS from RPGLE


I ran a test using this method, and Excel still prompts me to save my
changes after opening the spreadsheet when the formula is there. Does it
behave differently for you?
fe=ssCreationHelper_createFormulaEvaluator(
ssWorkbook_getCreationHelper(Book));

wwCell = SSRow_createCell(Row: CurCol);
SSCell_setCellType(wwCell: CELL_TYPE_FORMULA);
wwStr=new_string('COUNTIF('+$col(col.MStr:RowCount)+':'
+$col(col.MEnd:RowCount)+',"<>0")');
SSCell_setCellFormula(wwCell: wwStr);
SSCell_setCellStyle(wwCell: Acct);

ssFormulaEvaluator_evaluateFormulaCell(fe:wwcell);



From: "Mark Murphy/STAR BASE Consulting Inc."
<mmurphy@xxxxxxxxxxxxxxx>
To: "RPG programming on the IBM i \(AS/400 and iSeries\)"
<rpg400-l@xxxxxxxxxxxx>
Date: 04/07/2016 01:07 PM
Subject: RE: XLS from RPGLE
Sent by: "RPG400-L" <rpg400-l-bounces@xxxxxxxxxxxx>



This is how I do it:

dcl-c CREATIONHELPER_CLASS
'org.apache.poi.ss.usermodel.CreationHelper';
dcl-c FORMULAEVALUATOR_CLASS
'org.apache.poi.ss.usermodel.FormulaEvaluator';

dcl-s ssCreationHelper Object(*JAVA: CREATIONHELPER_CLASS);
dcl-s ssFormulaEvaluator Object(*JAVA: FORMULAEVALUATOR_CLASS);

dcl-pr ssCreationHelper_createFormulaEvaluator Like
(ssFormulaEvaluator)
EXTPROC(*JAVA
:
CREATIONHELPER_CLASS

:'createFormulaEvaluator');

dcl-pr ssFormulaEvaluator_evaluateFormulaCell Like(jInt)
ExtProc(*JAVA
:
FORMULAEVALUATOR_CLASS
:
'evaluateFormulaCell');
cell Like(ssCell);
end-pr;

Then after adding my formula cell, I evaluate it in place by calling

dcl-s ch Like(ssCreationHelper);
dcl-s fe Like(ssFormulaEvaluator);
dcl-s cell Like(ssCell);

ch = ssWorkbook_getCreationHelper(book);
fe = ssCreationHelper_createFormulaEvaluator(ch);

... add formula cell to workbook ...

ssFormulaEvaluator_evaluateFormulaCell(fe: cell);


Mark Murphy
STAR BASE Consulting, Inc.
mmurphy@xxxxxxxxxxxxxxx


-----Darren Strong <darren@xxxxxxxxx> wrote: -----
To: "RPG programming on the IBM i \(AS/400 and iSeries\)"
<rpg400-l@xxxxxxxxxxxx>
From: Darren Strong <darren@xxxxxxxxx>
Date: 04/07/2016 09:17AM
Subject: RE: XLS from RPGLE


Well, this is the prototype and call example, but I still get the message
about "You need to save your changes" when I close the generated
spreadsheet. Also, I was using an Excel NORMSINV() function in one of the
formulas, and it threw a java exception until I removed that formula,
meaning, not all formula functions are currently supported. I'm running
POI 3.14.

DCL-PR evaluateAllFormulaCells EXTPROC(*JAVA :
'org.apache.poi.xssf.+
usermodel.XSSFFormulaEvaluator' : 'evaluateAllFormulaCells' )
STATIC;
// Parameter prototype declaration for Java type: XSSFWorkbook
arg0 OBJECT(*JAVA : 'org.apache.poi.xssf.usermodel.XSSFWorkbook'
);
END-PR ;


CALLP evaluateAllFormulaCells( Book);



From: Darren Strong <darren@xxxxxxxxx>
To: "RPG programming on the IBM i \(AS/400 and iSeries\)"
<rpg400-l@xxxxxxxxxxxx>
Date: 04/07/2016 08:45 AM
Subject: RE: XLS from RPGLE
Sent by: "RPG400-L" <rpg400-l-bounces@xxxxxxxxxxxx>



Or even better, I found this article on evaluating formulas on the Apache
website:
https://poi.apache.org/spreadsheet/eval.html

I'll see if I can adapt it to some RPG prototypes, because I get annoyed
being asked to save changes whenever I open a spreadsheet with formulas.





From: Darren Strong <darren@xxxxxxxxx>
To: "RPG programming on the IBM i \(AS/400 and iSeries\)"
<rpg400-l@xxxxxxxxxxxx>
Date: 04/07/2016 08:26 AM
Subject: RE: XLS from RPGLE
Sent by: "RPG400-L" <rpg400-l-bounces@xxxxxxxxxxxx>



One other thing I'd try, and I'm sorry I can't test it myself, but if you
can calculate the value yourself, write that value with something like the
ss_num() function, and then write the ss_formula to the same cell. I
wonder if you that might simulate what Excel normally does, by putting a
value and a formula there.

As far as creating java prototypes, I've found a lot of help using RDi. It
has a java method generator, so that if you navigate to the correct .jar
file, and find the method within, it creates the prototypes and call
example for you. Knowing which .jar and navigating the hundreds of
functions is not trivial I admit, but the POI website javadoc helps tell me
where to go. To access the method generator in RDi, you need to have a
RPGLE source open, and select Source->New->Java Method Call






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