Re: Does OJB supports Geronimo?

[Armin Waibel]

Hi Andreas,

Andreas Bohnert wrote:
hi,
I wonder if OJB supports Geronimo. I haven't found an TransactionManager
in /org/apache/ojb/broker/transaction/tm, also I haven't found any
geronimo topics in the mailing list or the documentation.

Are there any Geronimo users here?

I try to migrate from jboss to geronimo, but now I'm doubtful, if I will
be sucessful, if there is no transactionmager to use ...


Sorry Geronimo support is on my todo-list, but it slipped my mind.

To implement the TransactionManagerFactory I this document about 
JBoss/Hibernate migration (scroll down to GeronimoTransactionManagerLookup)
http://cwiki.apache.org/GMOxDOC10/jboss-to-geronimo-hibernate-migration.html

The OJB version (compatible with current sources) will look like this:

public class GeronimoTransactionManagerFactory implements 
TransactionManagerFactory
{
    public static final String 
TransactionMgrGBeanName="geronimo.server:J2EEApplication=null," +

"J2EEModule=geronimo/j2ee-server/1.0/car,J2EEServer=geronimo,j2eeType=TransactionManager," 
+
            "name=TransactionManager";

    private TransactionManager tm;

    public TransactionManager getTransactionManager() throws 
TransactionManagerFactoryException
    {
        if(tm == null)
        {
            tm = lookupManager();
        }
        return tm;
    }

    private TransactionManager lookupManager() throws 
TransactionManagerFactoryException
    {
        try
        {
            Class kernelClass = 
ClassHelper.getClass("org.apache.geronimo.kernel.Kernel");
            Class kernelRegistryClass = 
ClassHelper.getClass("org.apache.geronimo.kernel.KernelRegistry");
            Class proxyManagerClass = 
ClassHelper.getClass("org.apache.geronimo.kernel.proxy.ProxyManager");
            Class objectNameClass = 
ClassHelper.getClass("javax.management.ObjectName");

            Object transactionManagerName = ClassHelper.newInstance(
                    objectNameClass, String.class, 
TransactionMgrGBeanName);
            Object kernel = 
kernelRegistryClass.getMethod("getSingleKernel", null).invoke(null, null);
            Object proxyManager = 
kernelClass.getMethod("getProxyManager", null).invoke(kernel, null);
            Class[] clzArray = {objectNameClass, Class.class};
            Object[] objArray = {transactionManagerName, 
TransactionManager.class};
            return (TransactionManager) 
proxyManagerClass.getMethod("createProxy", clzArray)
                    .invoke(proxyManager, objArray);

        }
        catch(Exception e)
        {
            throw new TransactionManagerFactoryException("Geronimo 
Transaction Manager Lookup Failed", e);
        }
    }
}

It would be great if you could check this class.

regards,
Armin


Thanks for your help,
andreas


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