Created
March 25, 2017 05:13
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import org.hibernate.Query; | |
import org.hibernate.SQLQuery; | |
import org.hibernate.Session; | |
import HibernateQueryCompatibility; | |
/** | |
* A class used to obtain an {@link org.hibernate.Query} | |
* or a {@link org.hibernate.SQLQuery} from any version | |
* of Hibernate. | |
* <p>Starting from Hibernate 5.2 the Hibernate {@link Session} returns | |
* a new interface {@link org.hibernate.query.Query} | |
* that <b>extends</b> the old {@link org.hibernate.Query}, | |
* for this reason binary compatibility is broken: | |
* code that needs to be reused under any Hibernate version | |
* should use this {@link HibernateQuery} class | |
* instead than the Hibernate {@link Session}. | |
* <p>See also <A href='https://github.com/querydsl/querydsl/issues/1917'> | |
* https://github.com/querydsl/querydsl/issues/1917</a>. | |
* @author michele vivoda | |
* | |
*/ | |
public final class HibernateQuery | |
{ | |
private static final HibernateQueryCompatibility provider; | |
static | |
{ | |
// custom loader that does not fail if one class fails to load | |
provider = (HibernateQueryCompatibility) new ServiceLoader(false, HibernateQueryCompatibility.class).getProvider(); | |
} | |
//public static final Type LONG =provider.getLong(); | |
/** | |
* A thread safe instance of {@link HibernateQueryCompatibility}. | |
* @return a {@link HibernateQueryCompatibility}, never <code>null</code>. | |
*/ | |
public static final HibernateQueryCompatibility getInstance() | |
{ | |
return provider; | |
} | |
/** | |
* Creates a {@link Query}. See {@link Session#createQuery(String)}. | |
* @param session a {@link Session}, never <code>null</code>. | |
* @param hql required HQL | |
* @return a {@link Query}, never <code>null</code>. | |
*/ | |
public static Query createQuery(Session session, String hql) { | |
return provider.createQuery(session, hql); | |
} | |
/** | |
* Creates a {@link SQLQuery}. See {@link Session#createSQLQuery(String)}. | |
* @param session a {@link Session}, never <code>null</code>. | |
* @param sql required SQL | |
* @return a {@link SQLQuery}, never <code>null</code>. | |
*/ | |
public static SQLQuery createSQLQuery(Session session, String sql) { | |
return provider.createSQLQuery(session, sql); | |
} | |
} |
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