Implementing Connection interface

Question

I am implementing my own Connection interface.
Most of my methods are implemented by delegating a "real" Connection object I receive from the JDBC driver, except the "close()" method where I instead of closing the connection return it back to the pool that I created.
Now when I do the following:
ConnectionPoolManager poolMan = ConnectionPoolManager.getInstance();
con = poolMan.getConnection(SI.getDataSourceName());
I get the connection and I can close it using
con.close();
My log4j successfuly reports that connection was returned to the pool.
Now the interesting part.
If I create a statement and the resultset from it and then close the connection using the following code:
st = con.createStatement(resultSetType, resultSetConcurrency);
rs = st.executeQuery(SQL)
rs.getStatement().getConnection().close();
It actually closes connection. It never executes my code that returns the connection back to the pool. I am using JBuilder and when I am tracing the code, it never goes into my Connection implementation.
Any help will be greatly appreciated

Answer 1

You need to create a ResultSet Manager, just like you did with the Connection interface.
Your problem here is the getConnection() method of the ResultSet interface returns an object that implements the original Connection interface, not one that applies to your purpose. Then, of course, you'll be able to use the original close() method.
When you create the ResulSet manager, overwrite the close() pattern, according to your programming pattern.
Cesar Villalta A.
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