Examples of org.apache.openejb.spi.ApplicationServer

org.apache.openejb.spi.ApplicationServer

LOCAL to REMOTE SERIALIZATION

Definition:
This is a serialization that initiates in the local vm, but is outside the scope of a marked IntraVM local serialization.
Circumstances:
When an IntraVM implementation of a javax.ejb.* interface is serialized outside the scope of the IntraVM Server
These serializations happen when objects are sent from a local bean to a remote client as part of a return value, or when a stateful session bean is passified.
Action:
Don't serialize the IntraVM javax.ejb.* interface implementation, instead ask the ApplicationServer to nominate its own implementation as a replacement. This is done via the org.apache.openejb.spi.ApplicationServer interface.
Example Scenario:
SERIALIZATION

1. ObjectOutputStream encounters an IntraVmMetaData instance in the object graph and calls its writeReplace method.
2. The IntraVmMetaData instance determines it is being serialized outside the scope of an IntraVM serialization by calling IntraVmCopyMonitor.isIntraVmCopyOperation().
3. The IntraVmMetaData instance calls the getEJBMetaData method on the ApplicationServer.
4. The IntraVmMetaData instance returns the ApplicationServer's EJBMetaData instance from the writeReplace method.
5. The ObjectOutputStream serializes the ApplicationServer's EJBMetaData instance in place of the IntraVmMetaData instance.
Note: The ApplicationServer's EJBMetaData instance can be any object that implements the javax.ejb.EJBMetaData interface and can also implement any serialization methods, such as the writeReplace method, to nominate a replacement or implement protocol specific logic or otherwise gain control over the serialization of EJBMetaData instances destined for its remote clients.
DESERIALIZATION
The deserialization of the Application Server's javax.ejb.* implementations is implementation specific.
@version $Revision: 534559 $ $Date: 2007-05-02 12:29:36 -0500 (Wed, 02 May 2007) $

            /*
            * If the proxy is serialized outside the core container system,
            * we allow the application server to handle it.
            */
        } else {
            ApplicationServer applicationServer = ServerFederation.getApplicationServer();
            if (interfaceType.isBusiness()){
                return applicationServer.getBusinessObject(this.getProxyInfo());
            } else {
                return applicationServer.getEJBObject(this.getProxyInfo());
            }
        }
    }

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            * allow the application server to handle it.
            */
        } else {
            BaseEjbProxyHandler handler = (BaseEjbProxyHandler) ProxyManager.getInvocationHandler(theProxy);
            if (theProxy instanceof javax.ejb.EJBObject) {
                ApplicationServer applicationServer = ServerFederation.getApplicationServer();
                return applicationServer.getHandle(handler.getProxyInfo());
            } else if (theProxy instanceof javax.ejb.EJBHome) {
                ApplicationServer applicationServer = ServerFederation.getApplicationServer();
                return applicationServer.getHomeHandle(handler.getProxyInfo());
            } else {
                throw new RuntimeException("Invalid proxy type. Handles are only supported by EJBObject types in EJB 1.1");
            }
        }
    }

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            SystemInstance system = SystemInstance.get();


            SafeToolkit toolkit = SafeToolkit.getToolkit("OpenEJB");


            if (appServer == null) {
                ApplicationServer defaultServer = (ApplicationServer) toolkit.newInstance("org.apache.openejb.core.ServerFederation");
                appServer = defaultServer;
            }
            system.setComponent(ApplicationServer.class, appServer);


            /*

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        jndiBuilder = new JndiBuilder(containerSystem.getJNDIContext());


        setConfiguration(new OpenEjbConfiguration());


        final ApplicationServer appServer = system.getComponent(ApplicationServer.class);
        if (appServer == null) {
            system.setComponent(ApplicationServer.class, new ServerFederation());
        }


        system.setComponent(EjbResolver.class, new EjbResolver(null, EjbResolver.Scope.GLOBAL));

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        jndiBuilder = new JndiBuilder(containerSystem.getJNDIContext());


        setConfiguration(new OpenEjbConfiguration());


        final ApplicationServer appServer = system.getComponent(ApplicationServer.class);
        if (appServer == null) {
            system.setComponent(ApplicationServer.class, new org.apache.openejb.core.ServerFederation());
        }


        system.setComponent(EjbResolver.class, new EjbResolver(null, EjbResolver.Scope.GLOBAL));

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        } else if (type == Short.TYPE) {
            out.write_short(((Short) object).shortValue());
        }  else {
            // object types must bbe written in the context of the corba application server
            // which properly write replaces our objects for corba
            ApplicationServer oldApplicationServer = ServerFederation.getApplicationServer();
            try {
                ServerFederation.setApplicationServer(corbaApplicationServer);


                // todo check if
                // copy the result to force replacement

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        boolean offline = true;
        configurationFactory = new ConfigurationFactory(offline);
        assembler = new Assembler();


        // install application server
        ApplicationServer applicationServer = new ServerFederation();
        SystemInstance.get().setComponent(ApplicationServer.class, applicationServer);


        // install transaction manager
        transactionManager = getRawService(kernel, transactionManager);
        TransactionServiceInfo transactionServiceInfo = new TransactionServiceInfo();

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        jndiBuilder = new JndiBuilder(containerSystem.getJNDIContext());


        setConfiguration(new OpenEjbConfiguration());


        final ApplicationServer appServer = system.getComponent(ApplicationServer.class);
        if (appServer == null) {
            system.setComponent(ApplicationServer.class, new org.apache.openejb.core.ServerFederation());
        }


        system.setComponent(EjbResolver.class, new EjbResolver(null, EjbResolver.Scope.GLOBAL));

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            /*
            * If the proxy is serialized outside the core container system,
            * we allow the application server to handle it.
            */
        } else {
            final ApplicationServer applicationServer = ServerFederation.getApplicationServer();
            return applicationServer.getEJBHome(this.getProxyInfo());
        }
    }

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            /*
            * If the proxy is serialized outside the core container system,
            * we allow the application server to handle it.
            */
        } else {
            final ApplicationServer applicationServer = ServerFederation.getApplicationServer();
            if (interfaceType.isBusiness()) {
                return applicationServer.getBusinessObject(this.getProxyInfo());
            } else {
                return applicationServer.getEJBObject(this.getProxyInfo());
            }
        }
    }

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org.apache.geronimo.corba.util.Util

org.apache.geronimo.openejb.OpenEjbSystemGBean

org.apache.geronimo.yoko.RMIStubHandler

org.apache.openejb.assembler.classic.Assembler

org.apache.openejb.core.ivm.EjbHomeProxyHandler

org.apache.openejb.core.ivm.EjbObjectProxyHandler

org.apache.openejb.core.ivm.IntraVmHandle

org.apache.openejb.core.ivm.IntraVmMetaData

org.apache.openejb.core.ServerFederation

org.apache.openejb.OpenEJB$Instance

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Examples of org.apache.openejb.spi.ApplicationServer

LOCAL to REMOTE SERIALIZATION

Related Classes of org.apache.openejb.spi.ApplicationServer