PlugIn - Plug-In Architecture Pattern Problem The...

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Plug-In Architecture Pattern
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Problem The functionality of a system needs to be extended after the software is shipped The set of possible post-shipment extensions is large Specific details on future extensions are not available, but their general nature is predictable It should be possible to extend the system without access to the system's source code, by people who were not the system's original developers It should be easy to add and remove extensions in whatever combination is desired by the customer
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Example : Syntax Highlighting You are writing a text editor intended for use by software developers You want to support syntax highlighting, but the set of possible programming languages is unbounded Even if you could list all of the possible languages, you don't have enough resources to implement syntax highlighting for them all Third-party developers and end-users will need the ability to add syntax highlighting for their favorite languages without your help
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Solution Define an abstract interface that captures the general nature of the necessary extensions
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