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Hibernate Criteria when using many to one relation

 
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am new to Hibernate Criteria, please help me

am creating a Member pojo class, in this class this Member class is having two foreign ke ys businessunitid(Many to one relation), role_id(one to one relation) of classes BusinessUnit, Role respectively.(role,businessunit are references of Role,BusinessUnit respectively)



crit = hibsession.createCriteria(Member.class)
.createCriteria("role")
.add(Restrictions.eq("role_id",role_id));
this statement working fine but

Below statement giving Hibernate Exception:
crit = hibsession.createCriteria(Member.class)
.createCriteria("businessunit ")
.add(Restrictions.eq("businessunitid",businessunitid));
 
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