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Difference between revisions of "EclipseLink/UserGuide/JPA/Basic JPA Development/Querying/Native"
< EclipseLink | UserGuide | JPA | Basic JPA Development | Querying
m (→EclipseLink Native Query) |
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{{EclipseLink_API | {{EclipseLink_API | ||
|api= | |api= | ||
− | *org.eclipse.persistence.queries | + | *[http://www.eclipse.org/eclipselink/api/org/eclipse/persistence/queries/package-frame.html org.eclipse.persistence.queries] |
− | *org.eclipse.persistence.expressions | + | *[http://www.eclipse.org/eclipselink/api/org/eclipse/persistence/expressions/package-frame.html org.eclipse.persistence.expressions] |
}} | }} | ||
+ | |||
+ | For additional information on EclipseLink native queries, see [[EclipseLink/UserGuide/Queries_(ELUG)|Queries]] in the ''EclipseLink User's Guide''. | ||
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=== Using JpaEntityManager createQuery() API === | === Using JpaEntityManager createQuery() API === |
Revision as of 13:48, 16 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.