Is there any way to retrieve the database dialect that a specific session is using? e.g. MySQL, PostGIS, etc.
I am trying to modify Sanjiv Singh's GeoAlchemy extension so that a person can retrieve the appropriate database procedure for a given dialect, so that geospatial queries can be both direct (performed in a single database call) as well as dialect-neutral. For example, in PostGIS, getting the WKT of a geometry requires func.ST_AsText() session.query(func.ST_AsText(Road.geom)).first() However, in MySQL, the same procedure requires func.AsText() session.query(func.AsText(Road.geom)).first() I would like to be able to create a function called wkt() in both geoalchemy/mysql.py and geoalchemy/postgis.py that enables me to the following: session.query(session.dialect.wkt(Road.geom)).first() Thanks, Roy Hyunjin Han Modi Research Group Earth Institute at Columbia University http://modi.mech.columbia.edu -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalch...@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.