The EntityManager is the representation of a PersistenceContext, allowing a user to manipulate data pulled from a database.
Questions tagged [entitymanager]
1802 questions
0
votes
1 answer
Silex Doctrine "The EntityManager is closed" after Doctrine Exception
I am registering Doctrine in Silex in this way:
// Doctrine
$this->register(new DoctrineServiceProvider(), array(
'db.options' => $this['config']['doctrine']['db.options']
));
$this->register(new…
cybtow
- 157
- 14
0
votes
1 answer
Can you persist many entities of a variety of classes using a single javax.persistence.EntityManager?
Let's say you have table table1 and table table2.
I am using Springboot with hibernate JPA.
I declare the EntityManager object as below using @Persistencecontext annotation
@PersistenceContext
private EntityManager em;
And then I want to loop…
Tisha
- 827
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- 34
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0 answers
HSQL default identity 0 conflicts with jpa entities with identity int id defaulted to 0
I have a JPA entity with:
@Id
@Column(name = "id", columnDefinition = "INT")
@GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
and using EntityManager.merge by default
For testing I'm using HSQL that default its "auto increment"…
Aviram
- 553
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1 answer
EntityManager is closed whenever I return like @PersistenceContext protected EntityManager entityManager;
I get the Entitymanager like;
CRUD(){
@PersistenceContext
protected EntityManager entityManager;
public EntityManager getEntityManager() {
return entityManager;
}
}
And in my stateless EJB;I use…
Ratha
- 9,434
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- 163
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votes
1 answer
Hibernate EntityManager is getting closed, in wildfly 10
I use container managed JPA where inject the EntityManager instance. With the injected entitymanager instance, when I use find() method it says entity manager is closed.
I use wildfly 10.
How can I overcome this issue? What I do wrong here?
I…
Ratha
- 9,434
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- 163
0
votes
1 answer
EntityManager auto wiring if I am using crudrepository
I have an interface that implements crudrepository. I am using @Query annotations.
I really need an entitymanager to build a native query. What should I do? Should I tear down the interface implementing crudrepository and extend from…
Julie
- 179
- 2
- 13
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0 answers
set timeout query on entityManager
How I can configure the timeout for persiste() query of EntityManager ? I would like that the insert request never takes more time than 1 second!
Here is the code of DAO service :
@Service
@Transactional
public class DAOServiceImpl implements…
user2602584
- 737
- 2
- 7
- 25
0
votes
1 answer
javax.transaction.SystemException: Illegal state (Expected: PrePrepared). BEA1-0A15322BC6A35D331713
I am upgrading entity beans in our application from EJB 2.0 to 3.0 version. I am using openjpa version 1.2.2 on weblogic server(10.3.0) and transaction type will be JTA.
I am facing the below error while committing the transaction post persisting…
Niru
- 80
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- 6
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1 answer
SpringMVC + JPA + Cannot find the declaration of element 'persistence'
I am getting the " Cannot find the declaration of element 'persistence' exception.
I tried the solution given at OpenJPA 2.1.1 - Cannot find the declaration of element 'persistence' but it did not work. Below are the details of my project. I have…
Ash Ash
- 443
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0 answers
How to change JPA connection on the fly
I'm using JPA for a desktop software. The end user needed a frame to change the Database connection dynamically (on the fly) by changing the persistance.xml data. I've tried using below code (which I found here) and modified but so far unsuccessful…
Thanuj
- 139
- 2
- 12
0
votes
1 answer
What can be a reason for persist()/merge() to create two rows in database?
I am starting my second project in JavaEE and created simple singleton bean to init some data in database for future debug purposes. However, I am stuck at strange problem - persist method(as well as merge) creates two rows in database. And all I do…
newfolder
- 108
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- 9
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votes
1 answer
Hikari configuration in xml for Master/Slave Datasources
Presently I have a datasource configured using Hikari in my applicationContext.xml. I want to configure in the same xml file for a master/slave kind of datasource.
Also how do I establish a new entity manager factory in the same ?
My…
The-Proton-Resurgence
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Hibernate Transaction working slowly
I had a piece of code which was inserting data into 4 tables in DB one record at a time. The data comes from a file which has around 11K records on an average. With this code the complete processing is getting done in 10-15 min.
for (final…
Rachit M Garg
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votes
2 answers
How to implement generics using JPA/hibernate EntityManager and EJB3.0?
I have an slsb holding my business logic, how do I use generics to change the following three methods into one generic method ? The first two are the same db, the third is a different database. Also do the methods require further annotation in…
NimChimpsky
- 46,453
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votes
1 answer
EntityManages NullPointerException, eclipselink + tomee + Jersey + Derby
I am new to JPA, EJB and REST topic and wanted to make some simple crud app. When I use EntityManagerFactory I get entities from Derby but problem starts when I want to use transactions for persisting objects. When I try to inject EntityManager I…
Jakub_R
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- 4