The discussion thread indicates a need for some advice. The software stack has been designed to ease a layered approach whereby the MAL layer acts as an abstract engine. In any such layering scheme, it is from a software architecture point of view highly discouraged to jump in the middle.
Either, your solution works on top of SQL or it works directly on MAL. Don't ever attempt to be a man in the middle, e.g. exploiting the implementation scheme deployed for the SQL stack. It is much more complicated and extremely fragile. Instead, use the inspiration of SQL->MAL to develop your own solution, including the necessary catalog management structures. Or just extend SQL with a few missing functions to do the specifics. regards, Martin [EMAIL PROTECTED] wrote: > [EMAIL PROTECTED] wrote: > > >> [EMAIL PROTECTED] wrote: >> >>> Hello, >>> >>> how is it possible to access in a MAL client session (mclient -l mal) >>> the BATs of tables which were created previously in sql? >>> >>> >> You can't, because the mapping of SQL to BATs is maintained in the SQL >> private catalog. >> Also, each column in SQL has multiple bats. >> > > Is it not recommended or not at all possible? > > Because what I am up to could be implemented on top of sql > (at least to rapidly get off the ground in the beginning). > > I would like to have something like this for an OODB schema: > > - one bat for each class > - one bat for each attribute (maybe also a persistent reversed bat > sorted on the value to be able to speed up equality and range queries) > - one bat for each relation between classes > - one bat for each collection which contains attributes (and not references) > > And if I interpret the contents of sql_catalog correctly, > much of it is already present there. > > If it is technically impossible, then I would have to > duplicate some of that. > > > Kambiz > > ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Monetdb-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/monetdb-developers
