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NullPointer while using JPA EntityManager in a ThredPoolExecutor
I'm implementing a JavaEE8 application using CDI and running on an Open Liberty (v20.0.0.4). The application has a event-triggered job, which runs some code in an separate thread using the ThreadPoolE...
cloudy_rowdy
Votes: 0
Answers: 1
how configure transactionmanager for multiple databases
I have one transaction manager with many entitymanager one for each database but if there is any fails it does not access any, how I can resolve this problem?
@Primary
@Bean
public ChainedTransact...
Luis Enrique Rojas Perez
Votes: 0
Answers: 1
Creating EntityManager using EntityManagerFactory in web application without @PersistenceContext
I am creating a web application with JPA. I have configured Hibernate with connection pool c3p0.
In my case it is not possible to inject EntityManager using @PersistenceContext annotation.
In Java EE ...
Chrystian Kącki
Votes: 0
Answers: 1
How to delete many-to-many relationship?
I have a many-to-many relationship (Car & driver) How, when deleting a Driver, delete a link in the driver_car table and delete cars that were bound to this driver, and vice versa, when deleting a...
user17835087
Votes: 0
Answers: 1