Function Start

doc/src/tutorial/dictionaryclient3/Activator.cpp:71–121

* Implements BundleActivator::Start(). Creates a service * tracker to monitor dictionary services and starts its "word * checking loop". It will not be able to check any words until * the service tracker finds a dictionary service; any discovered * dictionary service will be automatically used by the client. * It reads words from standard input and chec

         * @param context the bundle context for this bundle.
         */
        void
        Start(BundleContext context)
        {
            m_context = context;

            // Create a service tracker to monitor dictionary services.
            m_tracker = new ServiceTracker<IDictionaryService>(
                m_context,
                LDAPFilter(std::string("(&(") + Constants::OBJECTCLASS + "="
                           + us_service_interface_iid<IDictionaryService>() + ")" + "(Language=*))"));
            m_tracker->Open();

            std::cout << "Enter a blank line to exit." << std::endl;

            // Loop endlessly until the user enters a blank line
            while (std::cin)
            {
                // Ask the user to enter a word.
                std::cout << "Enter word: ";

                std::string word;
                std::getline(std::cin, word);

                // Get the selected dictionary, if available.
                std::shared_ptr<IDictionaryService> dictionary = m_tracker->GetService();

                // If the user entered a blank line, then
                // exit the loop.
                if (word.empty())
                {
                    break;
                }
                // If there is no dictionary, then say so.
                else if (!dictionary)
                {
                    std::cout << "No dictionary available." << std::endl;
                }
                // Otherwise print whether the word is correct or not.
                else if (dictionary->CheckWord(word))
                {
                    std::cout << "Correct." << std::endl;
                }
                else
                {
                    std::cout << "Incorrect." << std::endl;
                }
            }

            // This automatically closes the tracker
            delete m_tracker;
        }

        /**
         * Implements BundleActivator::Stop(). Does nothing since