Well, my guess is that last modified time for collection works similarly to 
file system directory -- it gets updated whenever an entry added or deleted, 
but modifying existing file does not change directory last modified time. 

Interestingly enough, right now this behavior is inconsistent -- 
core.Collection has updateDocument() method that changes collection's last 
modified time.

Can you use custom meta data for collection to track the changes?

Regards,
Natalia 

On Nov 30, 2009, at 7:39 AM, Ferenc Pápai wrote:

> Hello,
> 
> collection.getCollectionMeta().getLastModifiedTime()  method returns the time 
> instant when the last NEW entry has been added to a collection.
> It does not cover case when the collection is updated (existent data is 
> changed).
> 
> As a user I'd be more interested when *anything* has been changed in a given 
> collection.
> 
> Is there a reason behind the current behavior?
> 
> thanks,
> Ferenc
> 

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