NOT IN using LINQ doesn't work

[logiclabs]

Using NOT in AQL queries doesn't seem to work correctly for some operators.

For example, NOT IN linq query: dbq.Where(ev => !AQL.In(ev.Category, new [] {"a","b"}));

generates AQL filter: filter not ev.Category in ['a','b']

This looks OK, but the statement doesn't work correctly, and returns no results.

Alternatives that give correct results are:

• Parenthesis around the NOT: filter not(ev.Category in ['a','b'])
• Use NOT IN instead: filter ev.Category not in ['a','b']