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Difference between revisions of "EclipseLink/UserGuide/JPA/Basic JPA Development/Querying/Native"
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Revision as of 11:34, 18 June 2010
EclipseLink Native Query
In addition to JPQL, EclipseLink rich native DatabaseQuery and Expression criteria API.
Key API
{{{apis}}}
For additional information on EclipseLink native queries, see 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.
