eclipselink

I have a main thread where I get an object from database, then close the EntityManager, then put the object into a queue. A worker thread makes some business with the object, then puts it into a finished queue. Then the main thread gets the object from the finished queue and merges the object: EntityManager em = entityManagerFactory.createEntityManager(); em.getTransaction().begin(); // Print the primary key ID of the object, // it is NOT empty yes it exists in the db. em.merge(myObject); em.getTransaction().commit(); em.close(); I confirm the primary key ID of the object by printing it before

How do I configure dynamic weaving using EclipseLink & Spring? Right now I'm trying to get this working with a Junit test, but I'll later have to have it work with Tomcat (my department has been standardized on it for something like 10 years). I'm running into two main problems: 1. Spring wants a load time weaver: Exception: java.lang.IllegalStateException: Failed to load ApplicationContext at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:181) at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies

I am using EclipseLink in my web application, and I am having a hard time gracefully catching and handling Exceptions it generates. I see from this thread what seems to be a similar problem, but I don't see how to work around or fix it. My code looks like this: public void persist(Category category) { try { utx.begin(); em.persist(category); utx.commit(); } catch (RollbackException ex) { // Log something } catch (HeuristicMixedException ex) { // Log something } catch (HeuristicRollbackException ex) { // Log something } catch (SecurityException ex) { // Log something } catch

I'm using EclipseLink to run some Native SQL. I need to return the data into a POJO. I followed the instructions at EclipseLink Docs , but I receive the error Missing descriptor for [Class] The query columns have been named to match the member variables of the POJO. Do I need to do some additional mapping? POJO: public class AnnouncementRecipientsFlattenedDTO { private BigDecimal announcementId; private String recipientAddress; private String type; public AnnouncementRecipientsFlattenedDTO() { super(); } public AnnouncementRecipientsFlattenedDTO(BigDecimal announcementId, String

I'm attempting to follow the example located here but get an javax.xml.bind.PropertyException. I receive this exception because of the following line of code: marshaller.setProperty(MarshallerProperties.MEDIA_TYPE, "application/json"); I have literally copy/pasted the example listed above so my code is exactly what you see there. Searching SO and Google for this has not been helpful, and thought I'd bring this to the geniuses at SO for some help. Any help would be most appreciated, (de)serialization with JSON and XML with json.org, Jackson, and JAXB has turned into a black and bottomless pit

I have a web application that is working fine under the following environment GWT 2.4.0 RestEasy 2.3.2.Final JAX-RS & JAXB Hibernate JPA 2.0 (hibernate-entitymanager + hibernate-validator) 4.2.0.Final MySQL 5.5.22 at localhost (Ubuntu 12.04) VMware 2.6 tomcat server The application is working successfully using JAX-RS, JAXB, Jackson JSON provider, Hibernate JPA annotations all mixed together into the same DTO. I am trying to port it to GAE CloudSQL. I am encountering MySQL access errors. I had to change the ORM from Hibernate to EclipseLink 2.3.2. Reminder : I respectfully request answerers