From: Vitor Peres <dodecaphonic@...>
Date: 2006-08-07T22:04:19+09:00
Subject: FireRuby 0.4.1 and blob data

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Hello,

First, I would like to apologize if I am skipping any vital steps in my
ignorance. I am currently building a GTK application using Ruby, a small
data retrieval and storage thingie that deals basically with drag and drop,
visual associations between data. A central part of it demands that I
retrieve an image from a  Blob column in a Firebird database to feed a
GtkImage.
The issue I'm having is this: using blob_data.to_s locks up Ruby, and
blob_data.each raises the following exception:

./lib/sign.rb:19:in `each': Error reading blob segment.
(FireRuby::FireRubyException)
segment buffer length shorter than expected
segment buffer length shorter than expected

I had tried a couple of weeks ago to import data into a blob column using
FireRuby, and retrieving them later resulted in 0 byte images. The failure
made me rewrite what I had in Python, just to get the job done -- which I
regret, since it has delayed this question and made me write Python. Am I
doing something fundamentally wrong, is there anything I seem to be
forgetting? I'm using FireRuby 0.4.1, Ruby 1.8.4 and Firebird 1.5, and the
data is certainly there, I can get it back fine using other methods.

Thanks in advance for reading this. Any help is appreciated.

--
Vitor Peres

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