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> select doi from Doi doi left join fetch doi.metadata metadata left join fetch metadata.titles titles left join fetch metadata.creators creators left join fetch metadata.descriptions descriptions left join fetch metadata.publishers publishers left join fetch metadata

indexes, but JDO does. The following entity definition uses JDO’s api/java/jdo/annotations/Index">@Index and api/java/jdo/annotations/Unique">@Uniqueapi/java/jpa/Entity">@Entity public class

(which are described above) are available also as JPA criteria query expressions. The api ... : api/java/jpa/criteria/Expression">Expression<Integer> path = country.api/java/jpa/criteria/Path/get_String">get("population"); api/java/jpa/criteria

Given an api/java/jpa/EntityManager">EntityManager, em.api/java/jpa/EntityManager/getTransaction">getTransaction().api/java/jpa/EntityTransaction/begin">begin(); for (int i = 0; i < 1000; i

and @NamedQueries Annotations The following api/java/jpa/NamedQuery ... -java"> api/java/jpa/NamedQuery">@NamedQuery(api/java/jpa/NamedQuery/name">name="Country.findAll", api/java/jpa/NamedQuery/query">query="SELECT c FROM Country c

a class as an entity is to mark it with the api/java/jpa/Entity">Entity annotation: import javax.persistence.Entity; api/java/jpa/Entity">@api/java/jpa/Entity">Entity public class MyEntity { } Entity

> in this API in order to work around the fact that Java generics are not compatible with varags. Learn how to define queries using the criteria API in ... method"> api/java/jpa/criteria/Expression" title

The api/java/jpa/Query">Query interface defines two methods for running SELECT queries: api/java/jpa/Query/getSingleResult ... . api/java/jpa/Query/getResultList">Query.getResultList

Static Field api/java/jdo/Constants" title="Interface in javax.jdo ... for the XML schema of the standard JDO object-relational mapping metadata file.

Static Field api/java/jdo/Constants" title="Interface in javax.jdo ... for the DTD of the standard JDO object-relational mapping metadata file.