Re: ERXSwitchComponent

Hi Robin,

Am 13.12.2012 um 21:44 schrieb Robin Smith <[email protected]>:

> Hi All
> 
> I have a question regarding ERXSwitchComponent and its componentCache.
> What i have noticed by stepping through the code is that it caches the
> components by name so if i call the same component more than once then
> it returns the cached version.
> 
> This sounds great unless i then try edit a different object using the
> same component, as the cache is preserving state from that last time
> it was used. For example if i edit Person1 using EditPerson.wod then i
> decide i want to edit Person2 which will also use EditPerson.wod any
> state from the first use is preserved (this really isnt the easiest
> thing to explain in an email)
> 
> So i have two questions
> 
> 1. Was this designed only to be used with stateless components? If so
> this is fine i will update the JavaDoc and move onto another solution.

Stateless would be one (and probably cleanest) solution but you can always manually get the current binding value by calling valueForBinding(name) for your person object or just use a nonsynchronizing component so you have complete control on binding synchronization.

> 
> 2. If not even better, but am i missing something maybe
> ERXSwitchComponent is supposed take an "id" that can make each use of
> a component unique. I dont mind the cache, if in my example i went
> back again to edit Person1 then it would be great for the cached
> values to be used. The class calls
> "paramWOContext.appendElementIDComponent(id);" repeatedly but i dont
> really know what this is supposed to be doing as it doesn't seem to
> change the "id" value.
> 
> If nobody has any input i will see about doing this work myself and
> submitting it to you guys
> 
> 
> Many Thanks
> 
> Robin
> 
> P.S. Why does ERXSwitchComponent not extend ERXDynamicElement

Because ERXDynamicElement exists only since this year's WOWODC but feel free to update it and get the pull requests coming :-)

> 
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