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javasingletonopenejbapache-tomee

Accessing singleton EJB from another webapp in TomEE

I have 2 webapps deployed on Apache TomEE+. In the first webapp I have created a singleton EJB class declared like this:

@Singleton
@Remote
@Startup
@Lock(READ)
public class SolverRegistryBean implements SolverRegistry
{
    // ...

From openejb.log I can see, that the singleton is available:

2011-12-05 20:43:22,696 - INFO  - Jndi(name=SolverRegistryBeanRemote) --> Ejb(deployment-id=SolverRegistryBean)
2011-12-05 20:43:22,696 - INFO  - Jndi(name=global/localhost/SolverCore-1.0/SolverRegistryBean!grid.solver.SolverRegistry) --> Ejb(deployment-id=SolverRegistryBean)
2011-12-05 20:43:22,696 - INFO  - Jndi(name=global/localhost/SolverCore-1.0/SolverRegistryBean) --> Ejb(deployment-id=SolverRegistryBean)
2011-12-05 20:43:22,750 - INFO  - Started Ejb(deployment-id=SolverRegistryBean, ejb-name=SolverRegistryBean, container=My Singleton Container)

From my other app I want to access that singleton bean, so I do:

Properties p = new Properties();
p.put(Context.INITIAL_CONTEXT_FACTORY,
    "org.apache.openejb.client.RemoteInitialContextFactory");
p.put("java.naming.provider.url", "http://127.0.0.1:8080/openejb/ejb");
try {
    ctx = new InitialContext(p);
    SolverRegistry reg = (SolverRegistry)ctx.lookup(
        "openejb:global/global/localhost/SolverCore-1.0/SolverRegistryBean");

but then I get ClassCastException

java.lang.ClassCastException: $Proxy94 cannot be cast to grid.solver.SolverRegistry

I checked that this $Proxy94 class implements interfaces: grid.solver.SolverRegistry, org.apache.openejb.core.ivm.IntraVmProxy and org.apache.openejb.BeanContext$Removable.

Why this doesn't work?

Solution

  • I have resolved my problem by changing the lookup line to:

    SolverRegistry reg = (SolverRegistry)ctx.lookup("SolverRegistryBeanRemote");

    Still don't know what is openejb:global/global/localhost/SolverCore-1.0/SolverRegistryBean for.