getResources behavior when resources specified

Hey all,

I use getResources quite a bit, and i ran into an something that i'm curious if people can explain something.

I have a bunch of getResources call that look a lot like this:

$params = array(
'limit'=>'1',
'parents' => '143',
'context' => 'web',
'resources'=>$resourceList,
'includeTVs' => true,
'includeContent' => true,
'tpl' => 'articlelist.tpl'
);

When you set debug to true for the getResources call, the query that gets run includes a section like this: modResource.parent IN (list of parents from above, plus the ids of all the children of that parent) then an OR of the resources in the list.


I have a couple of questions:

1. if I am supplying a list of resources to include, and a parent(s) to include, what's the logic behind also including the child id's of the parents that are specified?
2. Should it be an OR of parents and the resource list? Seems that if a resource list is included, that should constrain the set to only the things in that list.

I ran into an issue when using getResources from a cron job. If you specify a resource list, but not a parent, the getResources query includes EVERY resource in the parent list. (this seems bad..)

Note: I know the easy solution is to include a parent. that does solve my problem..