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Manual
10

Running JPA Queries [2011-09-21]

query = em.createQuery("SELECT c FROM Country c", Country.class); ListFROM Country c"); List results = query ... that return a single result object. In this case, the result object has to be extracted from the result
Manual
10

Running JPA Queries

query = em.createQuery("SELECT c FROM Country c", Country.class); ListFROM Country c"); List results = query ... that return a single result object. In this case, the result object has to be extracted from the result
Manual
9

Shared (L2) Entity Cache

an entity object that is already managed by the EntityManager returns the existing instance from ... - every entity class which is not marked with @Cacheable inherits cacheability setting from its super ... context. If an entity object is not available also in the shared cache - it is retrieved from
Result
9

Eclipse Public License - v 1.0

additions to the Program originate from and are distributed by that particular Contributor. A Contribution 'originates' from a Contributor if it was added to the Program by such Contributor itself or ... , such as lost profits; iii) states that any provisions which differ from this Agreement are offered
Manual
9

JPA Primary Key

that is absent from other object oriented databases. Entity Identification Every entity object in the database is uniquely identified (and can be retrieved from the database) by the combination of its type ... are deleted from the database. The primary key value of an entity can be accessed by declaring a primary
Manual
9

JPA Named Queries

strings from the Java code. It also enforces the use of query parameters rather than embedding literals ... ="SELECT c FROM Country c") The @NamedQuery annotation contains four elements ... ", query="SELECT c FROM Country c") public class Country { ... } Attaching multiple named
Tutorial
9

Step 3: Add a Main Class

to store Point objects in the database and then retrieve them from the database. Use copy and paste ... : Query q1 = em.createQuery("SELECT COUNT(p) FROM Point p"); System.out.println("Total ... .createQuery("SELECT AVG(p.x) FROM Point p"); System.out.println("Average X: " + q2
Tutorial
9

Step 3: Add a Main Class [2011-02-11]

the database and then retrieve them from the database: Open the [New Java Class] dialog box by right ... ) FROM Point p"); System.out.println("Total Points: " + q1.getSingleResult()); // Find the average X value: Query q2 = em.createQuery("SELECT AVG(p.x) FROM Point p
Tutorial
9

Step 3: Add a Main Class

the database and then retrieve them from the database: Open the [New Java Class] dialog box by right ... ) FROM Point p"); System.out.println("Total Points: " + q1.getSingleResult()); // Find the average X value: Query q2 = em.createQuery("SELECT AVG(p.x) FROM Point p
Manual
9

Working with JPA Entity Objects [2011-04-18]

are provided in the Storing Entities section. Entity objects retrieved from the database by ... . A managed entity object can also be retrieved from the database and marked for deletion, by using the EntityManager’s remove method within an active transaction. The entity object changes its state from