Linked Questions
16 questions linked to/from Persistence unit as RESOURCE_LOCAL or JTA?
1
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0
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119
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When we should use RESOURCE_LOCAL and when use JTA? [duplicate]
The flowing is my persistence xml file,So my question is ?
Is it wrong that i used RESOURCE_LOCAL or not ?
<persistence-unit name="default-persistence-unit" transaction-type="RESOURCE_LOCAL">
...
- 552
136
votes
9
answers
261k
views
What's the use of session.flush() in Hibernate
When we are updating a record, we can use session.flush() with Hibernate. What's the need for flush()?
- 1,425
53
votes
7
answers
34k
views
What is the difference between LocalContainerEntityManagerFactoryBean and LocalEntityManagerFactoryBean?
Can anybody explain what is the difference between the Spring Framework's LocalContainerEntityManagerFactoryBean and LocalEntityManagerFactoryBean?
- 1,453
8
votes
5
answers
12k
views
Java JPA Illegal Argument Exception - NamedQuery of name: xyz not found
I am trying to get a user based on their ID using this named query, however I keep getting an illegal argument exception. I've been looking at this code for awhile. Hopefully someone may catch ...
- 2,944
3
votes
3
answers
13k
views
PersistenceContext not injecting EntityManager
I am getting a NullPointerException when trying to access the EntityManager via annotation PersistenceContext
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax....
- 822
0
votes
1
answer
7k
views
Unable to lookup JNDI name when building entity manager factory with Hibernate as persistence provider
my persistence.xml:
<persistence-unit name="manager1" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<jta-data-source>...
- 4,277
0
votes
1
answer
5k
views
javax.ejb.EJBTransactionRolledbackException glassfish 3.1 with EJB
I have create Entity,DAo and Façade in a Web app. I have no error on my codes but I am getting this exception while using find(T.class,id) method of JPA.An also it says that there is no @Entity ...
- 866
2
votes
1
answer
4k
views
Injected Entity Manager not using correct persistence unit
I have a JAX-RS restful service which needs to access a MySQL database. I am trying to do this using CDI and a entity manager. However, when I publish the app, it appears that the incorrect ...
- 75
4
votes
1
answer
1k
views
Why tomcat does not see the update in the database?
I am currently in netbeans I develop a web application with java. I use JPA2.0 with H2 Database.
The problem is that when I change the data in the database and I reloaded the page in the browser=>no ...
- 4,217
0
votes
1
answer
3k
views
Hibernate JPA too many connections
I keep hitting max number of connections after each web service call. It looks like EntityManager is being created every single time and creating a new connection to the database but it never fully ...
- 956
0
votes
1
answer
1k
views
Can't get external MySQL server to work with Java web application + Hibernate. (Unable to build EntityManagerFactory)
I have two Virtual machines on an external server. VM1 is the Tomcat server and VM2 is the MySQL server. I have a web application on the tomcat server which I can access by typing the ip in my browser ...
- 126
1
vote
1
answer
333
views
EntityManager handling
I am new to JPA 2 and I want to find out which are the best practices for handling an EntityManager on RESOURCE_LOCAL and with JTA. From what I have read, I should be able to make a dependency ...
- 2,951
0
votes
0
answers
541
views
@Transactional guice annotation using JTA
We have an application running both in Weblogic and Tomcat. We use @Transactional annotation of Guice package to correctly perform the database operations using a persistenceUnit of RESOURCE_LOCAL ...
- 137
0
votes
0
answers
520
views
EntityManager Throws NullPointerException
I am running the keycloak Photoz example. When I deploy to Wildfly, the EntityManager is not injected and I get a NullPointerException (below). I've tried a few different strategies -- tweaking ...
- 8,705
-3
votes
1
answer
392
views
What Transaction Manager (JTA) should I use to learn Hibernate?
I am learning Hibernate from the latest 2016 edition (2nd) of the Java Persistence with Hibernate book. It appears I need a JTA Transaction Manager (TM), but I do not want to have to learn Spring at ...
- 101