[OJB-developers] OJB OQL

[Jakob B. <jbr...@ho...>]

hi,

i've enhanced the oql-grammar to support is_defined, is_undefined and in:

querying for null can now be done in two ways (negative form in comment):

query.create("select persons from brj.ojb.Person where geburtsDatum = nil");
// <> nil
or:
query.create("select persons from brj.ojb.Person where
is_undefined(geburtsDatum)");      // is_defined(...)

for the in-query there arew also two flavours:

query.create("select persons from brj.ojb.Person where id in($1)");
query.bind(values);                // values is a collection conatining
Integers
or:
query.create("select persons from brj.ojb.Person where id in(1,3,44)");

jakob