Hi all,

I thought I saw this somewhere on the wiki but I can't find it. 

I have an object with a toMany relation (e.g. house.getResidents()).

How do I write an Expression to find all the houses with no residents?

I know this doesn't work:
Expression exp = ExpressionFactory.matchExp("residents", null);

and this doesn't work because the size() method doesn't follow bean 
convention:

Expression exp = ExpressionFactory.matchExp("residents.size", new 
Integer(0));


I would be much obliged...
-arturo

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