I've begun building a rather complex web application in Clojure/ClojureScript. After some evaluation I decided that CQRS + event sourcing would fit the requirements well. As such I have a bunch of aggregates (models) each in their own namespace that contain all the applicable record definitions, their invariants, and the commands each responds to. Predictably there are numerous operations that are similar between all aggregates.
In my controllers I will be evaluating JSON requests and creating a list of commands based on those requests. I would like to dynamically dispatch the commands to the aggregates and let the aggregates handle them by either returning more commands or committing an event to the db. What is the best practice to dynamically send a command to an aggregate's namespace? I'm aware of solutions that make use of protocols and multimethods. My primary concern is where should I be requiring the aggregate namespaces? Is it best to do as some web frameworks do and just require everything (all namespaces) in some kind of application wide superset (probably using tools.namespace). Should I have a superset for each type of namespace (eg all controllers required together, all aggregates ...) or should I only require a namespace on an as needed basis. If so how would I achieve dynamic dispatch between aggregates without requiring their namespace. Sorry I'm still pretty new to Clojure. I know I can achieve this in a number of ways, but I'm looking for the most idiomatic approach that will cause the least headaches as this application grows. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
