Re: Does OJB supports Geronimo?

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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