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From Hugi Thordarson <>
Subject WHERE EXISTS clause
Date Wed, 15 Feb 2017 18:18:26 GMT
Hi all,
I need to generate a WHERE EXISTS clause in a SelectQuery.

I see EJBQL supports EXISTS and I can create an EJBQLQuery that works fine with it, but unfortunately
the query I’m working with (and converting from EOF) is constructed using a huge amount
of Expressions, so I can't really use EJBQL.

So… I’m guessing this requires the creation of a custom Expression class? Is there a guide
somewhere for creating your own custom Expression classes?

- hugi
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