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Dynamic loading of class libraries - Using an interface class ~Yoshi Asageroterings 5.Nov.02 02:12 PM a Web browser Domino Designer 6.0All Platforms
aka <<Early binding vs. late binding >>
Hi Bill,
You raised an interesting point I've long suffered from. Here's how I overcome it so far:
I'm using an interface class that describes services that concrete classes need to garrantee.
The following illustration is borrowed from Damien Katz excellent "DatabaseDesign" sample code in Notes.net Sandbox.
Say a "DbDesign" factory class contextually loads "xxxDbDesign" classes implementing "IDbDesign" contract interface. xxx stands for w16, w32, mac, solaris, etc...
in DbDesign: « Use "iDbDesign" ». DbDesign factory loads a single class i.o. many based on the operating system.
in xxxDbDesign: « Use "iDbDesign" ». Note all xxxDbDesign PRIVATE classes derive/inherit from PUBLIC iDbDesign.
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