Implémentation

Voici dans ce qui suit de ce que pourrait être une implémentation très minimaliste du pattern Service Gateway.

public class CustomerPortfolioManager
{
     public CustomerPortfolioManager()
    {
     }

      public PortfolioTO retievePortfolio(final String idGRC)
      {
            ICustomerPortfolioGateway gateway = null;
            PortfolioTO portfolio = null;

            // allocation de l'implementation
            gateway = new CustomerPortfolioGateway();

            // chargement du portefolio du client
            portfolio = gateway.retievePortfolio(idGRC);

            // execution de traitements complémentaires

            return portfolio;

            }
}

Interface ICustomerPortfolioGateway
{
      public PortfolioTO retievePortfolio(final String idGRC);
}
public class CustomerPortfolioGatewayImp implements ICustomerPortfolioGateway
{
      public CustomerPortfolioGateway()
      {
      }

      public PortfolioTO retievePortfolio(final String idGRC)
      {
            PortfolioTO portfolio = null;
            PortfolioMapper mapper = new PortfolioMapper();
            MessageGateway msgGateway = new MessageGateway();

            portfolio = msgGateway.send(idGRC);
            return mapper.map(portfolio);
      }

}

public class PortfolioMapper
{
      public PortfolioMapper()
      {
      }
      public PortfolioTO map(Portfolio remoteData)
      {

      }
}

public class MessageGateway
{
      public MessageGateway()
      {
      }
      public Portfolio send(final String idGRC)
      {
            Document request = null;
            Document respDoc = null;
            String Object[] args = {idGRC};

            request = buildRequest(args);
            respDoc = doSend(resquest);

            return parseResponseDocument(respDoc);
      }
      // construction de la requete
      private Document buildRequest(Object[] args)
      {
            Document request = null;

            // construire le message à envoyer
            return request;
      }
      // envoi du message
      private Document doSend(Document msg)
      {
            MessageSender sender = new MessageSender();
            return sender.send(msg);
      }

      // parsing/extraction des données p
      rivate Portfolio parseResponseDocument(Document respDoc)
      {
            Portfolio remoteData = null;
            // parsing
            return remoteData;
      }
}