Glassfish example source code file (AbstractSessionContextImpl.java)

This example Glassfish source code file (AbstractSessionContextImpl.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Glassfish tags/keywords

abstractsessioncontextimpl, attempt, basecontainer, componentinvocation, componentinvocation, ejb, ejbinvocation, ejbinvocation, exception, illegalstateexception, illegalstateexception, operation, servlet, string, t, t, transaction, util, web

The Glassfish AbstractSessionContextImpl.java source code

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.ejb.containers;

import com.sun.ejb.EjbInvocation;
import com.sun.ejb.spi.container.StatefulEJBContext;
import com.sun.enterprise.deployment.EjbDescriptor;
import com.sun.enterprise.deployment.EjbSessionDescriptor;
import org.glassfish.api.invocation.ComponentInvocation;
import org.glassfish.api.invocation.InvocationManager;

import javax.ejb.EJBException;
import javax.ejb.SessionContext;
import javax.ejb.TimerService;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.transaction.UserTransaction;
import javax.xml.rpc.handler.MessageContext;
import com.sun.ejb.EJBUtils;
import java.util.*;


import static com.sun.ejb.containers.StatefulSessionContainer.EEMRefInfo;
import static com.sun.ejb.containers.StatefulSessionContainer.EEMRefInfoKey;

/**
 * Implementation of EJBContext for SessionBeans
 *
 * @author Mahesh Kannan
 */

public abstract class AbstractSessionContextImpl
        extends EJBContextImpl
        implements SessionContext {
    
    protected Object instanceKey;

    protected String ejbName;


    protected AbstractSessionContextImpl(Object ejb, BaseContainer container) {
        super(ejb, container);
        EjbSessionDescriptor sessionDesc =
                (EjbSessionDescriptor) getContainer().getEjbDescriptor();

        this.ejbName = sessionDesc.getName();
    }

    public Object getInstanceKey() {
        return instanceKey;
    }

    public void setInstanceKey(Object instanceKey) {
        this.instanceKey = instanceKey;
    }

    public String toString() {
        return ejbName + "; id: " + instanceKey;
    }

    public TimerService getTimerService() throws IllegalStateException {

        // Instance key is first set between after setSessionContext and
        // before ejbCreate
        if (instanceKey == null) {
            throw new IllegalStateException("Operation not allowed");
        }

        EJBTimerService timerService = EjbContainerUtilImpl.getInstance().getEJBTimerService();
        if (timerService == null) {
            throw new EJBException("EJB Timer service not available");
        }

        return new EJBTimerServiceWrapper(timerService, this);
    }

    public UserTransaction getUserTransaction()
            throws IllegalStateException {
        // The state check ensures that an exception is thrown if this
        // was called from setSession/EntityContext. The instance key check
        // ensures that an exception is not thrown if this was called
        // from a stateless SessionBean's ejbCreate.
        if ((state == BeanState.CREATED) && (instanceKey == null))
            throw new IllegalStateException("Operation not allowed");

        return ((BaseContainer) getContainer()).getUserTransaction();
    }

    public MessageContext getMessageContext() {
        InvocationManager invManager = EjbContainerUtilImpl.getInstance().getInvocationManager();
        try {
            ComponentInvocation inv = invManager.getCurrentInvocation();

            if ((inv != null) && isWebServiceInvocation(inv)) {
                return ((EjbInvocation) inv).messageContext;
            } else {
                throw new IllegalStateException("Attempt to access " +
                        "MessageContext outside of a web service invocation");
            }
        } catch (Exception e) {
            IllegalStateException ise = new IllegalStateException();
            ise.initCause(e);
            throw ise;
        }
    }

    public <T> T getBusinessObject(Class businessInterface)
            throws IllegalStateException {

        // businessInterface param can also be a class in the case of the
        // no-interface view

        // getBusinessObject not allowed for Stateless/Stateful beans
        // until after dependency injection
        if (instanceKey == null) {
            throw new IllegalStateException("Operation not allowed");
        }

        T businessObject = null;

        EjbDescriptor ejbDesc = container.getEjbDescriptor();

        if (businessInterface != null) {
            String intfName = businessInterface.getName();

            if ((ejbLocalBusinessObjectImpl != null) &&
                    ejbDesc.getLocalBusinessClassNames().contains(intfName)) {

                // Get proxy corresponding to this business interface.
                businessObject = (T) ejbLocalBusinessObjectImpl
                        .getClientObject(intfName);

            } else if ((ejbRemoteBusinessObjectImpl != null) &&
                    ejbDesc.getRemoteBusinessClassNames().contains(intfName)) {

                // Create a new client object from the stub for this
                // business interface.
                String generatedIntf = EJBUtils.getGeneratedRemoteIntfName(intfName);

                java.rmi.Remote stub =
                    ejbRemoteBusinessObjectImpl.getStub(generatedIntf);

                try {
                    businessObject = (T) EJBUtils.createRemoteBusinessObject
                        (container.getClassLoader(), intfName, stub);
                } catch(Exception e) {

                    IllegalStateException ise = new IllegalStateException
                        ("Error creating remote business object for " +
                         intfName);
                    ise.initCause(e);
                    throw ise;
                }

            } else if( ejbDesc.isLocalBean() && intfName.equals( ejbDesc.getEjbClassName() ) ) {

                businessObject = (T) optionalEjbLocalBusinessObjectImpl.
                        getClientObject(ejbDesc.getEjbClassName());

            }
        }

        if (businessObject == null) {
            throw new IllegalStateException("Invalid business interface : " +
                    businessInterface + " for ejb " + ejbDesc.getName());
        }

        return businessObject;
    }

    public Class getInvokedBusinessInterface()
            throws IllegalStateException {

        Class businessInterface = null;

        try {
            ComponentInvocation inv = EjbContainerUtilImpl.getInstance().getCurrentInvocation();

            if ((inv != null) && (inv instanceof EjbInvocation)) {
                EjbInvocation invocation = (EjbInvocation) inv;
                if (invocation.isBusinessInterface) {
                    businessInterface = invocation.clientInterface;
                    if( container.isLocalBeanClass(invocation.clientInterface.getName()) ) {
                        businessInterface = container.getEJBClass();
                    }

                }
            }
        } catch (Exception e) {
            IllegalStateException ise = new IllegalStateException();
            ise.initCause(e);
            throw ise;
        }

        if (businessInterface == null) {
            throw new IllegalStateException("Attempt to call " +
                    "getInvokedBusinessInterface outside the scope of a business " +
                    "method");
        }

        return businessInterface;
    }

    public boolean wasCancelCalled() {

        try {
            ComponentInvocation inv = EjbContainerUtilImpl.getInstance().getCurrentInvocation();

            if ((inv != null) && (inv instanceof EjbInvocation)) {
                EjbInvocation invocation = (EjbInvocation) inv;
                EjbFutureTask task = invocation.getEjbFutureTask();
                if (task == null) {
                    throw new IllegalStateException("Must be invoked from an async method");
                }
                if( (invocation.method.getReturnType() == Void.TYPE) ) {
                    throw new IllegalStateException("Must be invoked from a method with a Future<V> " +
                                                    "return type");
                }
                return invocation.getWasCancelCalled();
            }
        } catch (Exception e) {
            IllegalStateException ise = new IllegalStateException(e.getMessage());
            ise.initCause(e);
            throw ise;
        }

        throw new IllegalStateException("Attempt to invoke wasCancelCalled from " +
                                        "outside an ejb invocation");
    }

    protected void checkAccessToCallerSecurity()
            throws IllegalStateException {
        if (state == BeanState.CREATED) {
            throw new IllegalStateException("Operation not allowed");
        }

    }

    public void checkTimerServiceMethodAccess()
            throws IllegalStateException {
        // checks that apply to both stateful AND stateless
        if ((state == BeanState.CREATED) || inEjbRemove) {
            throw new IllegalStateException
                    ("EJB Timer method calls cannot be called in this context");
        }
    }

    protected ComponentInvocation getCurrentComponentInvocation() {
        BaseContainer container = (BaseContainer) getContainer();
        return container.invocationManager.getCurrentInvocation();
    }

    private boolean isWebServiceInvocation(ComponentInvocation inv) {
        return (inv instanceof EjbInvocation) && ((EjbInvocation) inv).isWebService;
    }

}