H1 2015 - db access support in Phobos

[Vadim Lopatin via Digitalmars-d]

I would like to propose Java way for implementation of DB access 
(JDBC - Java DataBase Connectors).

Standard library must contain only
* set of interfaces for uniform DB access
     * Connection - can create Statement or PreparedStatement, 
control transactions
     * Statement - can run update or query
     * PreparedStatement - same as Statement, but with parameters
     * ResultSet - DB query result row access
     * DataSource - can create connections, w/o parameters
     * Driver - interface which implements connection factory for 
particular DB types
     * Some useful classes like ConnectionPool
* factory method to create connection by URL and parameter set
* some method to register DB driver for factory - e.g. when 
called from driver's module __gshared static this()

Drivers may be placed in separate packages in standard library or 
in some DUB packages.

Look at https://github.com/buggins/ddbc
Currently it contains drivers for sqlite, MySQL and PostgreSQL.


If Andrey/Walter wish, I can prepare pool request based on code 
from ddbc.

Best regards,
      Vadim