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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.EJBReceiverContext;

import java.io.DataInput;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;

/**
 * Responsible for parsing module availability and unavailability messages from a stream, as per the EJB remoting client
 * protocol specification
 * 
 * User: Jaikiran Pai
 */
class ModuleAvailabilityMessageHandler extends ProtocolMessageHandler {

    private final RemotingConnectionEJBReceiver ejbReceiver;

    enum ModuleReportType {
        MODULE_AVAILABLE,
        MODULE_UNAVAILABLE
    }

    private final ModuleReportType type;
    private final EJBReceiverContext receiverContext;

    ModuleAvailabilityMessageHandler(final RemotingConnectionEJBReceiver ejbReceiver, final EJBReceiverContext receiverContext,
                                     final ModuleReportType type) {
        this.ejbReceiver = ejbReceiver;
        this.type = type;
        this.receiverContext = receiverContext;
    }


    /**
     * Processes the passed messageInputStream for module availability and/or module unavailability
     * report. This method then let's the {@link RemotingConnectionEJBReceiver} know about the module availability/unavailability
     *
     *
     * @param inputStream@throws IOException If there's a problem while reading the stream
     */
    @Override
    protected void processMessage(final InputStream inputStream) throws IOException {
        if (inputStream == null) {
            throw new IllegalArgumentException("Cannot read from null stream");
        }
        EJBModuleIdentifier[] ejbModules = null;
        try {
            final DataInput input = new DataInputStream(inputStream);
            // read the count
            final int count = PackedInteger.readPackedInteger(input);
            ejbModules = new EJBModuleIdentifier[count];
            for (int i = 0; i < ejbModules.length; i++) {
                // read the app name
                String appName = input.readUTF();
                if (appName == null) {
                    appName = "";
                }
                // read the module name
                final String moduleName = input.readUTF();
                // read distinct name
                String distinctName = input.readUTF();
                if (distinctName == null) {
                    distinctName = "";
                }
                ejbModules[i] = new EJBModuleIdentifier(appName, moduleName, distinctName);
            }
        } finally {
            inputStream.close();
        }
        switch (this.type) {
            case MODULE_AVAILABLE:
                this.ejbReceiver.modulesAvailable(this.receiverContext, ejbModules);
                break;
            case MODULE_UNAVAILABLE:
                this.ejbReceiver.modulesUnavailable(this.receiverContext, ejbModules);
                break;
        }


    }

    class EJBModuleIdentifier {
        final String appName;

        final String moduleName;

        final String distinctName;

        EJBModuleIdentifier(final String appname, final String moduleName, final String distinctName) {
            this.appName = appname;
            this.moduleName = moduleName;
            this.distinctName = distinctName;
        }

        @Override
        public boolean equals(Object o) {
            if (this == o) return true;
            if (o == null || getClass() != o.getClass()) return false;

            EJBModuleIdentifier that = (EJBModuleIdentifier) o;

            if (appName != null ? !appName.equals(that.appName) : that.appName != null) return false;
            if (distinctName != null ? !distinctName.equals(that.distinctName) : that.distinctName != null)
                return false;
            if (!moduleName.equals(that.moduleName)) return false;

            return true;
        }

        @Override
        public int hashCode() {
            int result = appName != null ? appName.hashCode() : 0;
            result = 31 * result + moduleName.hashCode();
            result = 31 * result + (distinctName != null ? distinctName.hashCode() : 0);
            return result;
        }

        @Override
        public String toString() {
            return "EJBModuleIdentifier{" +
                    "appName='" + appName + '\'' +
                    ", moduleName='" + moduleName + '\'' +
                    ", distinctName='" + distinctName + '\'' +
                    '}';
        }
    }
}