Hi Marian,here there is an example:the one on the top is a class instead the one on the bottom is the database table that the class access.This is a small example about what you can do by having information about the code and the database in the same model.
Thanks Fabrizio. I got it.
I think it would be cool to visualize the problem while maping inheritance chain and tables, and the different solutions: one table for each subclass, one big table with NULLable fields and a type field, etc.....
Cheers,FabrizioOn 1 Sep 2010, at 14:18, Mariano Martinez Peck wrote:On Tue, Aug 31, 2010 at 7:36 AM, Tudor Girba <tudor.girba@gmail.com> wrote:It is useful when you want to understand a database and possibly it's relationship with code.
For example, an SQL query in the string of some Java code that refers to a certain table creates a logical dependency. If we can relate the two worlds, we can build larger analyses.
Does it make better sense now?
Yes. I think that yes :)
I was thinking more from a database driver point of view, not from visualization. Sorry, I forgot this was moose hahhaha
Doru"What is more important: To be happy, or to make happy?"
On 31 Aug 2010, at 07:16, Mariano Martinez Peck wrote:
Sorry for my completely ignorance, but what can be the use of parsing SQL?
Suppose from the point of view of a database driver that receives queries, or from a ORM point of view....does it make sense for something?
Thanks
Mariano
On Tue, Aug 31, 2010 at 12:59 AM, Tudor Girba <tudor.girba@gmail.com> wrote:
That is cool news. I will take a look in the following days.
Cheers,
Doru
On 30 Aug 2010, at 16:00, Fabrizio Perin wrote:
Hi all,
i did implement an SQL parser using Petit Parser. I toke the grammar specification from SQLite http://www.sqlite.org/lang.html . The grammar implemented is not complete, for now i did implement "just" the create table statement, it means that you should be able to parse at least a script for create the database.
The code is in squeaksource http://www.squeaksource.com/@09zbthA-fDDfyUNQ/_OIex3aA .
To download it you can evaluate this:
Gofer new
squeaksource: 'PetitSQLParser';
package: 'ConfigurationOfPetitSQLParser';
load.
(Smalltalk at: #ConfigurationOfPetitSQLParser) perform: #loadDefault
in the repository there are several packages: the core contains the parser for the grammar.
In the package parser there is a parser that instantiate some draft objects representing relational elements.
In the next future i will start to implement also other statements.
If you start to use it and you have some problem please let me know.
Cheers,
Fabrizio
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