From: Alex Rothbard <alex323@...>
Date: 2011-04-06T03:30:52+09:00
Subject: Re: Seeking advice

The factory design pattern is sort of what I want, but not exactly.
Remember that there are three different classes (services) that need to
take advantage of a transport. The library is broken down like this:

There is a high level class that represents a user's overall account.
The user uses this class only. This account class needs to access three
different "services" (classes): the grid, the archive, and the
transaction service. All three services need to communicate with the
remote server using a transport.

In the example above, the transport is providing methods for accessing
the grid, but I am thinking of it in another way: the
grid/archive/transaction classes should provide methods which correspond
to the API on the remote server, and those classes then use the selected
transport to send it across.

In short, I have a server library which offers up three sets of APIs
(one for each service), and I want to be able to allow the end user to
easily choose which transport the client library uses when accessing
these services.

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