[rucksack-devel] Wake up persistent instances? SHARED-INITIALIZE?

[Jochen Schmidt]

Hi,

perhaps I'm doing something completely against the idea - but how do  
others implement refreshing of transient slots in persistent objects?

As rucksack doesn't call INITIALIZE-INSTANCE, REINITIALIZE-INSTANCE or  
SHARED-INITIALIZE on re-loaded instances - how can I specify to "wake  
up" my instances? Normally SHARED-INITIALIZE is used to initialize  
slots from initargs and initforms. There is a note in LOAD-OBJECT that  
transient slots should be set to their initforms - this could be done  
by calling SHARED-INITIALIZE on the transient slots. Calling SHARED- 
INITIALIZE would also enable to customize transient slot  
initialization by writing :before-Methods on SHARED-INITIALIZE.

Another idea - particularily if one wants to distinguish normal  
(re-)initialization from loading objects would be to add a new gf WAKE- 
UP-PERSISTENT-INSTANCE which would be called in LOAD-OBJECT after the  
optional call to  UPDATE-PERSISTENT-INSTANCE-FOR-REDEFINED-CLASS.

Any ideas?

ciao,
Jochen

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Jochen Schmidt
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