java Programming Glossary: em

document not saving in spring jpa document manager application

http://stackoverflow.com/questions/20586865/document-not-saving-in-spring-jpa-document-manager-application

manager application I am developing a document management application in spring using jpa and MySQL . The application.. database The flow of data including the pdf document seems to go through the following objects createOrUpdateDocumentForm.jsp.. document.setFileName file.getOriginalFilename System.out.println document.getContentType is document.getContentType..

How would you implement an LRU cache in Java 6?

http://stackoverflow.com/questions/221525/how-would-you-implement-an-lru-cache-in-java-6

would you implement an LRU cache in Java 6 Please don't say EHCache or OSCache.. Assume for purposes of this question that I want to implement my own using just the SDK learning by doing . Given that.. which datastructures would you use I've already implemented one using LinkedHashMap and Collections#synchronizedMap..

Disable caching in JPA (eclipselink)

http://stackoverflow.com/questions/2809275/disable-caching-in-jpa-eclipselink

number of posts on disabling the cache but this does not seem to be working. Any ideas I am trying to execute the following.. default EntityManager em entityManagerFactory.createEntityManager MyLocation one em.createNamedQuery.. em entityManagerFactory.createEntityManager MyLocation one em.createNamedQuery MyLocation.findMyLoc .getResultList .get 0..

How to persist a property of type List<String> in JPA?

http://stackoverflow.com/questions/287201/how-to-persist-a-property-of-type-liststring-in-jpa

@Entity public class Command implements Serializable @Id @GeneratedValue strategy GenerationType.AUTO.. main String args Command command new Command EntityManager em Persistence .createEntityManagerFactory pu .createEntityManager.. .createEntityManagerFactory pu .createEntityManager em.getTransaction .begin em.persist command em.getTransaction .commit..

JPA: How to have one-to-many relation of the same Entity type

http://stackoverflow.com/questions/3393515/jpa-how-to-have-one-to-many-relation-of-the-same-entity-type

First the entity class A @Entity public class A implements Serializable @Id @GeneratedValue strategy GenerationType.AUTO.. entities public static void main String args EntityManager em ... from EntityManagerFactory injection etc. em.getTransaction.. em ... from EntityManagerFactory injection etc. em.getTransaction .begin A parent new A A son new A A daughter..

Batch inserts with JPA/EJB3

http://stackoverflow.com/questions/448181/batch-inserts-with-jpa-ejb3

with JPA would be the same as with Hibernate EntityManager em ... EntityTransaction tx em.getTransaction tx.begin for int.. with Hibernate EntityManager em ... EntityTransaction tx em.getTransaction tx.begin for int i 0 i 100000 i Customer customer.. int i 0 i 100000 i Customer customer new Customer ..... em.persist customer if i 20 0 20 same as the JDBC batch size flush..

JPA native query join returns object but dereference throws class cast exception

http://stackoverflow.com/questions/4536655/jpa-native-query-join-returns-object-but-dereference-throws-class-cast-exception

t1 JOIN MasatoView v1 ON v1.username t1.username System.out.println get join jpql native query is being called EntityManager.. join jpql native query is being called EntityManager em null List Object out null try em EmProvider.getDefaultManager.. called EntityManager em null List Object out null try em EmProvider.getDefaultManager Query query em.createNativeQuery..

PersistenceContext EntityManager injection NullPointerException

http://stackoverflow.com/questions/4708035/persistencecontext-entitymanager-injection-nullpointerexception

xml ns persistence xmlns xsi http www.w3.org 2001 XMLSchema instance xsi schemaLocation http java.sun.com xml ns persistence.. xmlns xsi http www.w3.org 2001 XMLSchema instance xsi schemaLocation http java.sun.com xml ns persistence http java.sun.com.. persistence web.xml DOCTYPE web app PUBLIC Sun Microsystems Inc. DTD Web Application 2.3 EN http java.sun.com dtd web app_2_3.dtd..

Very Large Numbers in Java Without using java.math.BigInteger

http://stackoverflow.com/questions/5318068/very-large-numbers-in-java-without-using-java-math-biginteger

this question I think a programmer should have implemented his own bignum library once so welcome here. Of course.. the source code of this course life on github . Also I remade this a bit polished into a 14 part blog series . Creating.. do this DecimalBigInt d new DecimalBigInt 7 5 2 12345 System.out.println d This gives us de.fencing_game.paul.examples.DecimalBigInt@6af62373..

How cancel the execution of a SwingWorker?

http://stackoverflow.com/questions/6113944/how-cancel-the-execution-of-a-swingworker

these threads in the debug of Netbeans. 'AWT EventQueue 0' em execu癟瓊o 'AWT Windows' em execu癟瓊o 'SwingWorker pool 1 thread.. of Netbeans. 'AWT EventQueue 0' em execu癟瓊o 'AWT Windows' em execu癟瓊o 'SwingWorker pool 1 thread 1' em execu癟瓊o 'SwingWorker.. 'AWT Windows' em execu癟瓊o 'SwingWorker pool 1 thread 1' em execu癟瓊o 'SwingWorker pool 1 thread 2' em execu癟瓊o em execu癟瓊o..