Mapping for type BIT broke afer upgrade from 1.0.1 to 1.0.4

Hi,

we migrated from ojb 1.0.1 to 1.0.4
DB is Postgres. But I think, that the "problem" is independent
of the DB. 
We use the type BIT(1) for boolean values, so a mapping looks
like this:

<field-descriptor
    name="emailNotice"
    column="emailnotice"
    jdbc-type="BIT"
/>

With version 1.0.1 the generated SQL was
... WHERE emailnotice = '1' .....

With version 1.0.4 the generated SQL is
... WHERE emailnotice = 'true' .....

Thats not good, because the statement fails.

Does anybody know why ojb now maps the BIT types
to BOOLEAN? 

Thank you very much
Oliver