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Message-ID: <20060106105750.k5x5vficqo04o8o4@www.itellix.net>
Date: Fri,  6 Jan 2006 10:57:50 +0530
From: avik.sengupta@itellix.com
To: poi-dev@jakarta.apache.org
Subject: Re: Development of poi-ruby contribution
References: <1136494357.20921.16.camel@taylor-pc.mitre.org>
In-Reply-To: <1136494357.20921.16.camel@taylor-pc.mitre.org>
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Well, I did the poi-ruby module initially as a proof of concept, but 
havent been
sure if its useful to anybody :) .. I'd be delighted to see it developed
further.

I dont believe you need to wrap the poifs modules. The good thing about poi,
from the wrapping point of view, is that its got a clear encapsulation of its
public api. So you need only start wrapping from HSSFWorkbook onwards.

To start with read support, you essentially need to wrap the HSSFWorkbook
constructor that takes an InputStream. For write support, there is the
translation of a ruby IO object to a java OutputStream. Similary, you need to
transform a ruby IO object to a java InputStream

beyond that, you need to wrap more methods of HSSFWorkbook, and then the child
objects of workbook, ie HSSFRow, HSSFCell, HSSFFormat etc.. some which are
already done.. but more methods might be needed.

Hope that helps. Shout if you need anything else.

Regards
-
Avik

Quoting Tim Taylor <ttaylor@mitre.org>:

> I have used POI for quite a while, but have recently started working in
> Ruby.  I was very interested to see the poi-ruby extension, but after
> trying it out, it appears that this library can only create Excel files,
> not read them.
>
> It also appears that there has been no activity on this extension in 10
> months since the initial commit.
>
> After reading the brief description of this extension available at
> http://jakarta.apache.org/poi/poi-ruby.html I noticed that providing the
> ability to READ excel files was listed as one of the TODOs.  This item
> was also marked as being "easy".
>
> As I have a need for this capability, I would like to go ahead and
> implement this functionality.  However, before I started, I was hoping
> to get some thoughts on exactly what would need to be wrapped to provide
> this capability.
>
> Based on my initial and very brief review, it appears that many of the
> classes under the org.apache.poi.poifs package would need to be wrapped
> as well as more of the org.apache.poi.hssf.usermodel package and the
> org.apache.poi.hssf.eventusermodel package.
>
> Any suggestions or guidance would be appreciated before I get started.
>
> - Tim
>
>
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