/*
 *
 *  Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
 *
 *  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.
 */

/* $Rev$ $Date: 2005/12/22 11:33:21 $ */

#ifndef osoa_sca_servicelist_h
#define osoa_sca_servicelist_h

#include "osoa/sca/export.h"

namespace osoa
{
    namespace sca
    {

        /**
         * Holds a list of services that can be accessed from an SCA
         * component. Each entry can be cast to the business interface
         * of the target component. All the entries will be of the
         * same type.
         */
        class SCA_API ServiceList  
        {
        
        public:
            /**
             * Return the number of services in the list.
             * @return Number of services.
             */
            unsigned int size() {return numServices;}

            /**
             * Return the service at this position.
             */
            void* operator[] (unsigned int pos);

            ServiceList(const ServiceList& serviceList);
            ServiceList& operator=(const ServiceList& serviceList);
            virtual ~ServiceList();
            
        private:
            friend class ComponentContextImpl;

            /**
             * Create a new service list with the known number of 
             * target services. Once created, the service list can only
             * have services added to it up to the number of targets
             * specified on this constructor.
             * @param numTargets Number of target services to be held in this list.
             */
            ServiceList(unsigned int numTargets);

            /**
             * Add a service to this list.
             */
            void addService(void* service);

            unsigned int maxServices;
            unsigned int numServices;

            /** 
             * Pointer to an array of services. 
             */
            void** services;
                        
        };
    } // End namespace sca
} // End namespace osoa

#endif // osoa_sca_servicelist_h