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Python / Schema Diff Tool

From: "Patrick Earl" <patearl(at)patearl(dot)net>
To: pgadmin-hackers(at)postgresql(dot)org
Subject: Python / Schema Diff Tool
Date: 2006-03-13 07:12:38
Message-ID: courier.44151B66.00003182@e-intermart.com (view raw or flat)
Thread:
Lists: pgadmin-hackers
Greetings all.  I am a fan of the pgAdmin system as it seems to be the most 
developed open source admin tool for PostgreSQL.  I did some searching for 
software to compare database schemas and generate scripts to make two 
databases the same.  I found a couple projects that used either a web 
interface or the command line to do the work.  My wishes are for something 
more visual.  For example, you would see a tree of objects with items 
highlighted in different colours that show the changes.  You could then 
select any of those items and have the tool make those changes in the 
appropriate database.  I am presently working on such a tool. 

The reason I'm writing is that I would have liked to integrate the diff 
system into pgadmin.  However, I don't have the inclination to work in C++, 
so I opted to use Python for the tool.  I noticed that Python scripting is 
one of the major todo items.  I was hoping for even simplistic integration.  
To start, all that would be needed would be a way to load a python extension 
and some method that allows you to add an item to a menu.  To keep the 
dependencies to a minimum, I'm using only wxPython and the PygreSQL modules 
(Python's DB-API). 

I have little doubt that python extensions would help pgAdmin attract even 
more development.  Even a simple extension system could be extended as 
developers need new forms of integration.  So in summary, I would be happy 
to integrate my python program into pgAdmin if python support is provided.  
Otherwise, it will unfortunately remain a stand-alone program. 

I look forward to hearing comments and hopefully being able to contribute to 
the pgAdmin community. 

Best regards, 

       Patrick Earl

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