8 Dec
2011
8 Dec
'11
5:15 p.m.
Hi Alex,
With the team at Bordeaux, we are working on an implementation to query histories (the
tool is named VPraxis).
I implement a importer for Smalltalk.
For now, I can load histories for a package, for a metacello configuration, from a
repository.
A first part is build in Pharo (building snapshots from Monticello), and a second part in
build with our java software and build the history file. We can export xml, sql or swipl,
which allows us to build prolog queries.
Here (http://code.google.com/p/harmony/wiki/VPraxis) is a tutorial for the java VPraxis.
For Smalltalk, I am working on it.
I generated the current Mondrian history in a swipl format, available here:
http://dl.dropbox.com/u/7739334/MondrianHistorySwipl.zip
An important point is that we do not into account the multiple branches (it is a current
work :) ). So, when there are multiple branches, for now, we check were is the merge and
we "ignore the multiple branches".
Now, for your question, we create a script:
http://dl.dropbox.com/u/7739334/mondrianScript.txt
Using swi-prolog (http://www.swi-prolog.org/) , you can call, in this script, the method
moreN(L, 10).
For the package Mondrian-Layout, it returns: L = [id_MOAbstractGraphLayout,
id_MOCircleLayout, id_MOSugiyamaLayout].
Which are the three classes that have changed more that 10 times.
For now, I am working on packaging all the things together.
But if you have some other requests, do not hesitate to ask me :)
Cheers,
Jannik
On Nov 24, 2011, at 14:05 , Alexandre Bergel wrote:
Having a reification in Moose of 100 versions of
Mondrian for example :-)
Just answering the question 'Which classes and methods of Mondrian have changed more
than 10 times since the day Mondrian was born?' cannot be easily done without a lot of
memory
Alexandre
On 24 Nov 2011, at 03:27, Francois Stephany wrote:
---
Jannik Laval
I'm wondering: how big is a dataset >
500MB ? I've no idea how big it is.
Alex, what is your use case (in practice!) for more than 500MB?
On 23/11/11 18:25, Igor Stasenko wrote:
--
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Alexandre Bergel http://www.bergel.eu
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It is problematic, and requires different memory
management than we
currently have.
I think if you need really big data sets, then use gemstone, which is
developed to deal with that specifically.