Ability to extend implementation for example with OraclePreparedStatement

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We need extra  functionality from OracleJdbcDriver.
So, to use for example PreparedStatementSpy  we need create
public class OraclePreparedStatementSpy extends PreparedStatementSpy implements 
PreparedStatement,OraclePreparedStatement
and implement this functionality.
But because in ConnectionSpy constructor for PreparedStatementSpy write 
directly this is not possible.
The  decision is to use factory for spy class which can be configured.
We are going to implement this.
Will we be able to merge this with this branch in future?
If it's possible, could you please give us an advice on this and tell us if 
there are any restrictions?

Original issue reported on code.google.com by [email protected] on 18 Dec 2012 at 9:13