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Difference between revisions of "EclipseLink/UserGuide/JPA/Basic JPA Development/Querying/Native"
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In addition to [[EclipseLink/UserGuide/JPA/Basic JPA Development/Querying/JPQL|JPQL]], EclipseLink rich native DatabaseQuery and Expression criteria API. | In addition to [[EclipseLink/UserGuide/JPA/Basic JPA Development/Querying/JPQL|JPQL]], EclipseLink rich native DatabaseQuery and Expression criteria API. | ||
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For additional information on EclipseLink native queries, see [[EclipseLink/UserGuide/Queries_(ELUG)|Queries]] in the ''EclipseLink User's Guide''. | For additional information on EclipseLink native queries, see [[EclipseLink/UserGuide/Queries_(ELUG)|Queries]] in the ''EclipseLink User's Guide''. |
Revision as of 15:31, 18 June 2010
EclipseLink Native Query
In addition to JPQL, EclipseLink rich native DatabaseQuery and Expression criteria API.
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.