Case-insensitive search using Hibernate

Question

I\'m using Hibernate for ORM of my Java app to an Oracle database (not that the database vendor matters, we may switch to another database one day), and I want to retrieve objec

Answer 1

Most default database collations are not case-sensitive, but in the SQL Server world it can be set at the instance, the database, and the column level.

Answer 2

If you use Spring's HibernateTemplate to interact with Hibernate, here is how you would do a case insensitive search on a user's email address:

getHibernateTemplate().find("from User where upper(email)=?", emailAddr.toUpperCase());

Answer 3

The usual approach to ignoring case is to convert both the database values and the input value to upper or lower case - the resultant sql would have something like

select f.name from f where TO_UPPER(f.name) like '%FRAN%'

In hibernate criteria restrictions.like(...).ignoreCase()

I'm more familiar with Nhibernate so the syntax might not be 100% accurate

for some more info see pro hibernate 3 extract and hibernate docs 15.2. Narrowing the result set