org.jboss.ejb.client.remoting.ProtocolV1ClassTable Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2011, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jboss.ejb.client.remoting;

import org.jboss.ejb.client.Affinity;
import org.jboss.ejb.client.BasicSessionID;
import org.jboss.ejb.client.ClusterAffinity;
import org.jboss.ejb.client.EJBHandle;
import org.jboss.ejb.client.EJBHomeHandle;
import org.jboss.ejb.client.EJBHomeLocator;
import org.jboss.ejb.client.EJBLocator;
import org.jboss.ejb.client.EntityEJBLocator;
import org.jboss.ejb.client.NodeAffinity;
import org.jboss.ejb.client.SerializedEJBInvocationHandler;
import org.jboss.ejb.client.SessionID;
import org.jboss.ejb.client.StatefulEJBLocator;
import org.jboss.ejb.client.StatelessEJBLocator;
import org.jboss.ejb.client.TransactionID;
import org.jboss.ejb.client.UnknownSessionID;
import org.jboss.ejb.client.UserTransactionID;
import org.jboss.ejb.client.XidTransactionID;
import org.jboss.marshalling.ByteWriter;
import org.jboss.marshalling.ClassTable;
import org.jboss.marshalling.Unmarshaller;

import javax.ejb.CreateException;
import javax.ejb.DuplicateKeyException;
import javax.ejb.EJBAccessException;
import javax.ejb.EJBException;
import javax.ejb.EJBHome;
import javax.ejb.EJBMetaData;
import javax.ejb.EJBObject;
import javax.ejb.EJBTransactionRequiredException;
import javax.ejb.EJBTransactionRolledbackException;
import javax.ejb.FinderException;
import javax.ejb.Handle;
import javax.ejb.HomeHandle;
import javax.ejb.NoSuchEJBException;
import javax.ejb.NoSuchEntityException;
import javax.ejb.ObjectNotFoundException;
import javax.ejb.RemoveException;
import javax.transaction.InvalidTransactionException;
import javax.transaction.NotSupportedException;
import javax.transaction.RollbackException;
import javax.transaction.SystemException;
import javax.transaction.TransactionRequiredException;
import javax.transaction.TransactionRolledbackException;
import java.io.IOException;
import java.rmi.RemoteException;
import java.util.IdentityHashMap;
import java.util.Map;
import java.util.concurrent.Future;

/**
 * @author David M. Lloyd
 * @author Jaikiran Pai
 */
final class ProtocolV1ClassTable implements ClassTable {
    static final ProtocolV1ClassTable INSTANCE = new ProtocolV1ClassTable();

    private static final Map, ByteWriter> writers;
    /**
     * Do NOT change the order of this list.
     * Do NOT even remove entries from this list. If at all you no longer want a certain
     * class to be made available by this ClassTable, then add that class to the {@link #deprecatedClassTableClasses}
     * set below.
     */
    private static final Class[] classes = {
            EJBLocator.class,
            EJBHomeLocator.class,
            StatelessEJBLocator.class,
            StatefulEJBLocator.class,
            EntityEJBLocator.class,
            EJBHandle.class,
            EJBHomeHandle.class,
            SerializedEJBInvocationHandler.class,
            SessionID.class,
            UnknownSessionID.class,
            BasicSessionID.class,
            UserTransactionID.class,
            XidTransactionID.class,
            EJBHome.class,
            EJBObject.class,
            Handle.class,
            HomeHandle.class,
            EJBMetaData.class,
            RemoteException.class,
            NoSuchEJBException.class,
            NoSuchEntityException.class,
            CreateException.class,
            DuplicateKeyException.class,
            EJBAccessException.class,
            EJBException.class,
            EJBTransactionRequiredException.class,
            EJBTransactionRolledbackException.class,
            FinderException.class,
            RemoveException.class,
            ObjectNotFoundException.class,
            Future.class,
            SystemException.class,
            RollbackException.class,
            TransactionRequiredException.class,
            TransactionRolledbackException.class,
            NotSupportedException.class,
            InvalidTransactionException.class,
            Throwable.class, // <--
            Exception.class, // <--
            RuntimeException.class, // <--
            StackTraceElement.class,
            SessionID.Serialized.class,
            TransactionID.class,
            TransactionID.Serialized.class,
            Affinity.class,
            Affinity.NONE.getClass(),
            NodeAffinity.class,
            ClusterAffinity.class,
    };

    static {
        final Map, ByteWriter> map = new IdentityHashMap, ByteWriter>();

        Class clazz;

        for (int i = 0, length = classes.length; i < length; i++) {
            clazz = classes[i];
            if (clazz == Throwable.class || clazz == Exception.class || clazz == RuntimeException.class) {
                // don't write out exception types as class table items since they're out of our control
                continue;
            }
            map.put(clazz, new ByteWriter((byte) i));
        }
        writers = map;
    }

    @Override
    public Writer getClassWriter(final Class clazz) throws IOException {
        return writers.get(clazz);
    }

    @Override
    public Class readClass(final Unmarshaller unmarshaller) throws IOException, ClassNotFoundException {
        int idx = unmarshaller.readUnsignedByte();
        if (idx >= classes.length) {
            throw new ClassNotFoundException("ClassTable " + this.getClass().getName() + " cannot find a class for class index " + idx);
        }
        return classes[idx];
    }

    private ProtocolV1ClassTable() {
    }
}