Re: POI3.14 Change to AddMergedRegion

[Jack Woehr <jwoehr@xxxxxxxxxxxxxxxxxxxxxxxx>]

Read the source code?

On Sat, Oct 21, 2017 at 10:27 PM, Don Brown <DBrown@xxxxxxxxxx> wrote:

> System is at V7R2 and running Java 7
>
> I upgraded poi classes from 3.8 to 3.14 and most things worked fine.
>
> We are generating some very large spreadsheets and the streaming function
> available at this version is great!
>
> A job crashed today with the java error ...
>
> Message . . . . :   Java exception received when calling Java method.
> Cause . . . . . :   RPG procedure SS_MERGE in program XAPSW/HSSFR4
> received
>   Java exception "java.lang.IllegalArgumentException: Merged region C12
> must
>   contain 2 or more cells" when calling method "addMergedRegion" with
>   signature "(Lorg.apache.poi.ss.util.CellRangeAddress;)I" in class
>   "org.apache.poi.ss.usermodel.Sheet". Recovery  . . . :   Contact the
> person
>   responsible for program maintenance to determine the cause of the
> problem.
>
> So this is telling me there is a problem with the cell range for the merge
> function.
>
> Digging further in the program dump I find that is actually the case and
> the program is trying to merge a single cell.
>
> Ok I can correct that with a check in the program but this code worked at
> poi 3.8
>
> So there must have been a change in the java class to error if the region
> was for a single cell or with the reading I have been doing I think if you
> want to merge a single cell you have to specify the region differently.
> (Why merge a single cell or what is the result of merging a single cell -
> I have no idea)
>
> How can I find the validation rules for the AddMergedRegion or when this
> was changed - searching the poi site is not yielding the information I was
> hoping for - like a list of changes for each method by release.
>
> Any suggestions welcomed.
>
>
> Don Brown
>
>
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