JDBC Connector and pooling problems. Should be ConnectionPoolDataSource ?

Ciao all,
I am testing the JDBC Connector by Sun.
As you know, such JDBC connector is a JCA connector which can be used to
wrap a JDBC Driver or a JDBC Data Source or a JDBC
ConnectionPoolDataSource into a JCA connector.
Such JDBC Connector exposes to the client component the usual DataSource
interface, so that an application that was developed using a DataSource
can be easily migrated to a JCA enabled application: the application in fact will use the JDBC connector as if it was a DataSource, without
knowing that actually it is a JCA connector.
Here is my problem: the JCA architecture provides a pool. Therefore, I'd like the JDBC Connector to appear to the client as a
ConnectionPoolDataSource rather than a simple DataSource.
In fact, I have an application that performs a JNDI lookup to retrieve a JDBC data source. Then, if the obtained data source is instance of ConnectionPoolDataSource then the applications will use the SQL Connection and will closes it to release it back to the pool.
But if the data source is instance of DataSource, then the application
will retrieve a SQL connection, will use it, and will keep it in its own pool in order to reuse the SQL connection for better performance.
Now, if such application works with either a DataSource or a ConnectionPoolDataSource everything works properly, but when it works
with the JDBC Connector it fails: the JDBC Connector in fact appears as
a simple DataSource without pooling, so the application keeps the
obtained SQL connections in its own pool. But actually, the JDBC
Connector is a JCA connector which has a pool too, so the SQL connection
is kept in two pools and as a consequence, the JDBC Connector pool invalidates or destroy the connection in its pool, and the application, which is unaware, keeps in its pool a reference to an invalid connection, which leads to a SQLException at runtime.
So my question is: don't you think that the JDBC Connector should implement ConnectionPoolDataSource rather then DataSource, since it is a
JCA connector that offers pool services ?
And if so, is there a way to submit this question to someone working for Sun ?
Thank you for your time.
Gian Maria Romanato.

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