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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS 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 2017 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jboss.ejb.protocol.remote;

import org.jboss.ejb.client.Affinity;
import org.jboss.ejb.client.AttachmentKeys;
import org.jboss.ejb.client.EJBClientInvocationContext;
import org.jboss.ejb.client.TransactionID;
import org.jboss.marshalling.Marshaller;
import org.jboss.marshalling.ObjectTable;
import org.jboss.marshalling.Unmarshaller;

import java.io.IOException;
import java.io.InvalidObjectException;
import java.util.IdentityHashMap;
import java.util.Map;

/**
 * @author David M. Lloyd
 */
final class ProtocolV1ObjectTable implements ObjectTable {
    static final ProtocolV1ObjectTable INSTANCE = new ProtocolV1ObjectTable();

    private static final Map writers;
    /**
     * Do NOT change the order of this list.
     */
    private static final Object[] objects = {
            TransactionID.PRIVATE_DATA_KEY,
            Affinity.NONE,
            Affinity.WEAK_AFFINITY_CONTEXT_KEY,
            EJBClientInvocationContext.PRIVATE_ATTACHMENTS_KEY,
            AttachmentKeys.TRANSACTION_ID_KEY,
            AttachmentKeys.WEAK_AFFINITY,
            AttachmentKeys.COMPRESS_RESPONSE,
            AttachmentKeys.RESPONSE_COMPRESSION_LEVEL
    };

    static {
        final Map map = new IdentityHashMap();
        for (int i = 0, length = objects.length; i < length; i++) {
            map.put(objects[i], new ByteWriter((byte) i));
        }
        writers = map;
    }

    public Writer getObjectWriter(final Object object) throws IOException {
        return writers.get(object);
    }

    public Object readObject(final Unmarshaller unmarshaller) throws IOException, ClassNotFoundException {
        int idx = unmarshaller.readUnsignedByte();
        if (idx >= objects.length) {
            throw new InvalidObjectException("ObjectTable " + this.getClass().getName() + " cannot find an object for object index " + idx);
        }
        return objects[idx];
    }

    static final class ByteWriter implements Writer {
        final byte[] bytes;

        ByteWriter(final byte... bytes) {
            this.bytes = bytes;
        }

        public void writeObject(final Marshaller marshaller, final Object object) throws IOException {
            marshaller.write(bytes);
        }
    }
}