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createCriteria(Employee. class); Criterion salary = Restrictions.gt("salary", 2000); Criterion name = Restrictions. ilike("firstNname","zara%"); // To get records matching with OR conditions LogicalExpression orExp = Restrictions.or(salary, name); cr.
HQL is suitable for executing Static Queries, where as Criteria is suitable for executing Dynamic Queries. HQL is to perform both select and non-select operations on the data, Criteria is only for selecting the data, we cannot perform non-select operations using criteria.
I'm not sure how to describe this problem, so I think an example is the best way to ask my question:
I have two tables with a manyToMany relationship:
DriversLicence <-> LicenceClass
LicenceClass is things like "Car", "Motorbike", and "Medium Rigid".
Using Hibernate Criteria, how can I find all licences that have both "Car" and "Motorbike" LicenceClasses?
UPDATE 12/11/2008 I have discovered that this can easily be achieved by using a custom ResultTransformer. However the problem is that a result transformer only gets applied AFTER the query returns its results, it does not actually become part of the SQL. So I guess my question is now "Can you do what I initially described in SQL - and is there a Hibernate Criteria analog?"
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