gustafn
committed
on 14 Mar
use SQL functions (instead of plpgsql) defined as stabe and strict for

* content_folder__is_folder
* content_folder__is_sub_folder, and
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use SQL functions (instead of plpgsql) defined as stabe and strict for

* content_folder__is_folder

* content_folder__is_sub_folder, and

* content_folder__is_empty

... having as well more sane constructs returning boolean values

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