Hi Eric, The way I specify a Driver is by having another XML Config file(cooked up my own schema) which lists the name of the JOCL file(pool) and the respective driver. Then, before my application initializes, I read this XML Config file and load the classes by "class.forName()" explicitly for each Driver(pool).
DBCP could allow for having the Driver described in the JOCL file(which is the predecessor to Digester) for each pool. It need not have to do anything with the driver but could allow the user(application) to access the JOCL file's driver property. Does it make sense ? This would prevent me from having to come up with another file which just lists the pool name and its Driver. Best Regards, ANJAN. B -----Original Message----- From: Eric Pugh [mailto:[EMAIL PROTECTED]] Sent: Tuesday, April 30, 2002 10:31 AM To: 'Jakarta Commons Developers List' Subject: RE: Question about DBCP I see, when the docs are referring to the property jdbc.drivers, that is something passed to the JVM that makes it load them implicitly for you! However, I am planning on calling this from another application, DbForms. Therefore, I need the driver to be specified in the JOCL file.. Is there an attriubte specified that I can use to provide that, or do I have to work via passing it in via the property. Eric -----Original Message----- From: Eric Pugh [mailto:[EMAIL PROTECTED]] Sent: Tuesday, April 30, 2002 1:19 PM To: 'Jakarta Commons Developers List' Subject: RE: Question about DBCP Thanks for the info, I guess the whole JOCL thing was scaring me.. What is JOCL? It appears to be some sort of weird config format only used by DBCP? I guess I didn't want to try and figure it all out (lazy me!)... Also, DbForms uses the Digester to parse an XML file, and DBForms tanks if I add in Xalan/Xerces with Digester in the classpath.. I was hoping to keep things simple, but I will look at the JOCLPoolingDriverExample. Did you basically just use the example as your code? I'm trying to solve a problem without customizing/writing much at all! Lastly, is there any way to have a monitor on the pool size? Eric -----Original Message----- From: Anjan [mailto:[EMAIL PROTECTED]] Sent: Tuesday, April 30, 2002 12:42 PM To: Jakarta Commons Developers List Subject: RE: Question about DBCP Hi Eric!, I was using poolman in our NON open-source product but eventually moved to DBCP -- it works fine for me. Did you look at JOCLPoolingDriverExample.java in the doc directory ? This gives a sample of how the DriverManager uses the "jdbc.drivers" property. When DriverManager loads, it looks for the property jdbc.drivers and then loads all the drivers specified in this property(Be sure to separate the drivers in this property using COLONs and NOT SEMI-COLONs. You don't have to use Class.forName() on it since JDBC(1.2 JDK and later) uses this property to load all the drivers and initialize the drivers(actually the drivers register with the DriverManager when they are loaded). If you want to know more, you can look into the source of DriverManager in the JDK source. You will know that pooling is working by the speed with which the connections are obtained when you use DriverManager.getConnection(url); Best Regards, ANJAN. B -----Original Message----- From: Eric Pugh [mailto:[EMAIL PROTECTED]] Sent: Tuesday, April 30, 2002 7:20 AM To: 'Jakarta Commons Developers List' Subject: Question about DBCP Hi all, Can anyone provide pointers to open source sites using DBCP? I am trying to get DBCP to work with DbForms (www.dbforms.org). DbForms currently uses Poolman as it's suggested pool for JDBC connections, but it badly needs something newer and easier to set up! I have managed to tweak the class ManualPoolingDataSourceExample to work with MSSql Server. However, what is confusing to me is how in the example my jdbc driver is passed in? I see it goes in from the commandline as -Djdbc.drivers=oracle.jdbc.driver.OracleDriver, but I never see how it get's used. In addition, when i hardcoded my driver, I couldn't get it to work until I added a Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver") at the top of the code in my copy of ManualPoolingDataSourceExample. Can someone give me some pointers on how the -Djdbc.drivers value actually get's registered with the DriverManager? Also, how can I verify that I am actually pooling connections, versus creating a new one over and over? I have attached my copy of ManualPoolingDataSourceExample that I have renamed to ManualPoolingDataSourceTest, and am using under JUnit to test. Eric -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>