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Difference between revisions of "EclipseLink/UserGuide/JPA/Basic JPA Development/Querying/Native"
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{{EclipseLink_API | {{EclipseLink_API | ||
| − | |api=org.eclipse.persistence.queries | + | |api= |
| − | + | *org.eclipse.persistence.queries | |
| + | *org.eclipse.persistence.expressions | ||
}} | }} | ||
Revision as of 13:39, 16 June 2010
EclipseLink Native Query
In addition to JPQL, EclipseLink rich native DatabaseQuery and Expression criteria API.
Key API
{{{apis}}}
See:
- org.eclipse.persistence.queries
- org.eclipse.persistence.expressions
- Queries in the EclipseLink User's Guide
Using JpaEntityManager createQuery() API
import javax.persistence.Query; import org.eclipse.persistence.expressions.*; import org.eclipse.persistence.queries.ReadAllQuery; ExpressionBuilder builder = new ExpressionBuilder(); ReadAllQuery databaseQuery = new ReadAllQuery(Employee.class, builder); databaseQuery.setSelectionCriteria(builder.get("firstName").like("B%")); databaseQuery.addOrdering(builder.get("firstName").toUpperCase()); Query query = ((JpaEntityManager)entityManager.getDelegate()).createQuery(databaseQuery); List result = query.getResultList();
Note: The JpaEntityManager API was added in EclipseLink 1.1.
In EclipseLink 1.0, the JpaQuery method setDatabaseQuery() could be used.
