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Posted to user@struts.apache.org by Matt Raible <ma...@raibledesigns.com> on 2002/02/05 22:08:51 UTC
Service Locator pattern with Poolman & Struts
Is it a good idea to use a Service Locator Pattern with Poolman? I have the
following class:
public class ServiceLocator {
/** singleton's private instance */
private static ServiceLocator me;
static {
me = new ServiceLocator();
}
private ServiceLocator() {}
/** returns the Service Locator instance */
static public ServiceLocator getInstance() {
return me;
}
private DataSource ds = null;
private Connection con = null;
/** Retrieves a connection from the connection pool */
public Connection getConnection() {
try {
ds = PoolMan.getDataSource();
con = ds.getConnection();
} catch(SQLException ex) {
System.err.println("SQLException: " + ex.getMessage());
} catch(Exception e) {
System.err.println("Exception: " + e.getMessage());
}
return con;
}
/** Returns a connection from the connection pool */
public void closeConnection(Connection con) {
JDBCPool.closeConnection(con);
}
}
So in my Struts Action classes, I can simply get and close connections with
the following code:
ServiceLocator serviceLocator = ServiceLocator.getInstance();
con = serviceLocator.getConnection();
serviceLocator.closeConnection(con);
Any thoughts are appreciated.
Matt
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