Forum OpenACS Development: Re: How to handle dotlrn-specific changes in core?

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15: Re: How to handle dotlrn-specific changes in core? (response to 1)
Posted by Dave Bauer on 06/14/04 03:38 PM
Which part of service contracts are costly? ACS service contract stores implementation details in the database, but it creates a Tcl command for each implementation on startup, so there isn't any database overhead to call a service contract while running.

If you want to use callbacks I don't see a need to create another mechanism to define them.

I think the issue is deciding if there are clear places where a callback makes sense. We don't want to end up with a callback for every function in the core.