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I am looking at extending an existing application through the use of a plugin architecture. The application id written in Delphi, but I want to be able to implement various plugins in whatever language is best of the job. Currently we have skills in Delphi, C# and Java, and would like to be able to implement a plugin in whatever language is required.
Does anyone know of an example system that can be used to implement this ?
I am assuming that I could standardise on a particular COM interface and anything that implements that interface could be a plugin.
Does anyone have any pointers ?
Thanks
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A plug-in is a bundle that adds functionality to an application, called the host application, through some well-defined architecture for extensibility. This allows third-party developers to add functionality to an application without having access to the source code.
Microservices are always a part of a larger distributed system whereas plugins are typically deployed on the same host often as dynamic modules inside the same process (even though for stability purposes modern applications prefer to run every plugin in a dedicated process).
The plug-in architecture offers the following advantages. Due to the separation of the customization code changes from default code, plug-ins can be used to extend functionality of MicroStrategy Web without the need to recompile or to add new functionality to MicroStrategy Web without requiring access to source code.
Plugins are beneficial, providing extensibility, flexibility, and isolation of application features and custom processing logic. The core system is often defined as the general business logic or bare minimum for the application to function.
Here is a good overview of a COM-based plugin system that works in both Delphi and C++Builder:
Implementing a Plug-in Framework
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