Namespace loading upon deftype/defrecord class init?

[Chas Emerick]

I have a case where there's no easy and clean way to load the containing namespace prior to usage of a particular deftype class. My workaround at the moment is to have a (require 'some.foo.ns) at the top of a particular method body that I know is called before anything else.

This has come up before (http://groups.google.com/group/clojure/msg/3e9cbbe1a26af584):

On Dec 12, 2009, at 10:01 AM, Rich Hickey wrote:

> Currently deftype classes do no automatic namespace loading, unlike
> gen-class classes. The difference is gen-class classes are AOT-only,
> whereas deftype classes can be defined dynamically, where reloading
> namespaces would not be desired. I'm still thinking about how best to
> support Java consumption of deftype classes. For now, you will need
> some init glue code to load any support namespaces.

…but I don't see any relevant tickets, and haven't found any more recent discussion.

Is the desired solution known, or has this not been considered fully yet?

Thanks,

- Chas

[Stuart Halloway]

Not answered yet. Can you tell us more about your situation?

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[Rich Hickey]

Could you please create a ticket?

Thanks,

Rich

[colin.ma...@gmail.com]

Resurrecting a fairly old thread here, but did anything ever happen with this? I would dearly love a way to generate deftype classes which require their namespaces in a static initialiser.

My use case is for Cursive development - generally IntelliJ plugins are defined as extensions registered in an IoC XML file. It's possible to register many of them dynamically, but the JetBrains guys are getting concerned about startup time since it's now on the order of seconds, which is a lot especially if someone is planning to use IntelliJ for editing something other than Clojure (in which case the Cursive functionality would not be called and the classes and namespaces would never be loaded). I could use deftype in the cases where I'm just implementing an interface, except that I have no good way to load those namespaces at the right time. I can of course eagerly load them during startup but that defeats the purpose. I can use gen-class but it's what might be charitably called "idiosyncratic" :-). I'd prefer to use deftype if possible.