Re: POI3.14 Change to AddMergedRegion

You could be on to something there.

Anyhow, I will keep sitting on a few wisps of hay on this hay wagon we're on!

Cheers
Vern

On 10/23/2017 5:26 PM, Jack Woehr wrote:

Nice chatting, Vern. I think it's not so much that IBM i folks are chasing
after Open Source as that Open Source is chasing after IBM i folks :)

On Mon, Oct 23, 2017 at 4:20 PM, Vernon Hamberg <vhamberg@xxxxxxxxxxxxxxx>
wrote:

Hi Jack

Good on you for the submission for COMMON - good luck on that!

I, for one, have a lot of "new" stuff to get my hands around, so I might
not land on the open source wagon too much. I've also been one to advocate
for "teach'm how to fish".

So I stand between 2 positions hereupon.

Vern


On 10/23/2017 9:13 AM, Jack Woehr wrote:

I think for IBM i folks who have not drunk the Open Source koolaid yet :)
the secret is to set up a PC with Linux at home and fiddle with this
stuff.

If we are to use Open Source as IBM increasingly prescribes for IBM i,
then
we have to get used to the environment and also the ethos of a community
in
which all users are participants and are expected, in extremis, "to be
able
to paddle their own canoe across the lagoon", as the Samoans say.

I have proposed a presentation on this subject for the spring COMMON.


On Mon, Oct 23, 2017 at 6:24 AM, Vernon Hamberg <vhamberg@xxxxxxxxxxxxxxx
wrote:

Jack

Not all of us use SVN, nor do we know how to get to the source the way
you
do. We can use Google to get to javadocs - I've done that - Google is one
of my best friends!!

Regards
Vern

On 10/22/2017 11:15 AM, Jack Woehr wrote:

And if you want the change history of

org.apache.poi.hssf.usermodel.HSSFSheet just check out the source and
use
the svn commands to view file history.

On Sun, Oct 22, 2017 at 10:13 AM, Jack Woehr <
jwoehr@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:

From the Javadocs:

- addMergedRegion

public int addMergedRegion(CellRangeAddress <
https://poi.apache.org/apidocs/org/apache/poi/ss/util/
CellRangeAddress.html> region)

Adds a merged region of cells on a sheet.
Specified by:addMergedRegion
<https://poi.apache.org/apidocs/org/apache/poi/ss/usermodel/
Sheet.html#addMergedRegion-org.apache.poi.ss.util.CellRangeAddress->
in
interface Sheet
<https://poi.apache.org/apidocs/org/apache/poi/ss/usermodel/
Sheet.html>
Parameters:region - to mergeReturns:index of this regionThrows:
java.lang.IllegalArgumentException - if region contains fewer
than 2
cellsjava.lang.IllegalStateException - if region intersects with
a
multi-cell array formulajava.lang.IllegalStateException - if
region

intersects with an existing region on this sheet


On Sun, Oct 22, 2017 at 9:56 AM, Jack Woehr
<jwoehr@absolute-performance.
com> wrote:

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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