jpa-2.0

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Hibernate/JPA persistence.xml leads to SAXParseException when deploying to Jetty as WAR

I\'m having trouble getting an application running on Jetty. If I run the app using the maven jetty plugin i.e.[详细]

2023-04-08 06:10 分类：问答
JPQL and clausole IN, not found

i have the following situation: In the dao class: ... Query q = em.createNamedQuery(\"myQuery\"); q.setPa开发者_如何学运维rameter(\"attr\", \"value\");[详细]

2023-04-08 03:42 分类：问答
data missing, but not the record...weird

Tomcat/Struts2/JPA2(EclipseLink)/MySql I have several differen开发者_StackOverflow中文版t entities that are exhibiting an intermittent problem and I am puzzled.[详细]

2023-04-07 12:37 分类：问答
Entity relationships design with JPA2

I have two entities, User and UserSetting. The obvious relationship between these two has User as the first rate entity which contains a set / list of UserSettings so when a User is loaded the setting[详细]

2023-04-07 03:39 分类：问答
Cascade insert with JPA/Hibernate (EclipseLink)

I have two tables like this PERSON||EMPLOYEE| |id|fullName|| personId | code | EMPLOYEE.personId is a primary key as well as foreign key pointing to PERSON.id[详细]

2023-04-07 01:50 分类：问答
Merging JPA entity returns old values

I have 2 JPA entities that have a bidirectional relationship between them. @Entity public class A { @ManyToOne(cascade={CascadeType.PERSIST, CascadeType.MERGE})[详细]

2023-04-06 23:34 分类：问答
JPQL distinct with string function

I have a JPQL like this one: select distinct d from Depart开发者_如何学运维ment d left join fetch d.employees[详细]

2023-04-06 04:08 分类：问答
Are you able to prove the Hibernate Lazy-Loading?

I just want to ask, how to prove that hibernate is doing lazy loading . I have code like this : And I try to test lazy loading in hibernate (jpa) with this code :[详细]

2023-04-06 01:46 分类：问答
Hibernate: How configure EntityManager in Hibernate?

I create a hibernate project with \'hibernate tools\'provide by JBoss to Eclipse. Generated the Entities (POJO\'s) and then the DAO\'s.[详细]

2023-04-06 01:14 分类：问答
How do I make my entity object managed so I can remove it?

This doesn\'t work -- I always get the IllegalArgumentException thrown with the advice to \"try merging the detached and try the remove again.\"[详细]

2023-04-05 22:56 分类：问答