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Re: [eclipselink-users] Disabling EclipseLink Connection Pooling

I you sure that your customizer is called?

On 12/8/2010 10:07 AM, Zarar Siddiqi wrote:
Thanks for the reply, but that didn't do it.

I downloaded the source and debugged it to the point where I see the
following call on line 104 in DatabaseLogin.java:

this.useDefaultDriverConnect();

That's the which is calling this method:

     public void useDefaultDriverConnect() {
         setConnector(new DefaultConnector());
     }


which is causing the DefaultConnector to be set.

I tried searching for a dontUseDefaultDriverConnect() method but can't
find it.

Still stuck.  Will look into it more but if something jumps out, do let
me know.

Thanks,





On Tue, Dec 7, 2010 at 10:06 PM, Michael O'Brien
<michael.obrien@xxxxxxxxxx <mailto:michael.obrien@xxxxxxxxxx>> wrote:

    Zarar,
         May help - try setting the new connector on both the read and
    write connection pool, as it looks like the failure is due to
    DefaultConnector deferring to using RESOURCE_LOCAL jdbc properties
    for a direct connection.

                 JNDIConnector readConnector =
    (JNDIConnector)((DatabaseLogin)((ServerSession)session).getReadConnectionPool().getLogin()).getConnector();

    or

    (JNDIConnector)((DatabaseLogin)((ServerSession)session).getReadConnectionPool().getLogin()).setConnector(new
    JNDIConnector(dataSource));

         thank you
         /Michael


On 2010-12-07 17:33, Zarar Siddiqi wrote:
    Using 2.1.1. Trying to completely disable connection pooling by
    EclipseLink as it's handled externally, but I randomly get the
    following exception where it tries to get a connection on its own
    but fails.

    Exception Description: Unable to acquire a connection from driver
    [null], user [null] and URL [null].  Verify that you have set the
    expected driver class and URL.  Check your login, persistence.xml
    or sessions.xml resource.  The jdbc.driver property should be set
    to a class that is compatible with your database platform
    at
    org.eclipse.persistence.exceptions.DatabaseException.unableToAcquireConnectionFromDriverException(DatabaseException.java:376)
    at
    org.eclipse.persistence.sessions.DefaultConnector.connect(DefaultConnector.java:91)


In my session customizer I have:

            session.getLogin().setConnector(new
    JNDIConnector(dataSource)); //  I get dataSource from Spring
            session.getLogin().useExternalConnectionPooling();

    My persistence.xml looks like:

    <persistence xmlns="http://java.sun.com/xml/ns/persistence";
                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";

    xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
    http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd";
                 version="2.0">
    <persistence-unit name="db">
    <properties>
    <property name="eclipselink.target-database"
    value="ca.utoronto.sis.sws.db.ExtendedDB2MainframePlatform"/>
    <property name="eclipselink.logging.level" value="FINE"/>
    <property name="eclipselink.logging.logger" value="SLF4JSessionLog"/>
    <property name="eclipselink.session.customizer"
    value="EclipseLinkSessionCustomizer"/>
    </properties>
    </persistence-unit>
    </persistence>


Any idea why it's trying to go and do this on its own when I tell it not to?

    Thanks,


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-- Zarar Siddiqi 416-737-9024



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