Persistence Unit is a logical grouping of user defined persistable classes (entity classes, embeddable classes and mapped superclasses) with related settings.
Questions tagged [persistence-unit]
80 questions
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Wildfly 8.2.0.Final: Misconfiguration because of example datasource or persistence.xml?
I have three datasources configured in my persistence.xml:
Bevor
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Seam - Multiple Persistence Units
Does Seam support multiple persistence units in its configuration? Also, when would you want to have or need multiple persistence units?
I am working on a generic component and right now, it only supports a single persistence unit which makes sense…
Walter White
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Spring - two persistence units with different JPA providers
Is it possible to have two persistence units, one with Hibernate to work with some entities and another with EclipseLink to work with other entities in Spring framework?
iceDice
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Unable to build entity manager factory on Jelastic Enviroment
I have an webapp that work like a charm at localhost, but when I deploy in on a Tomcat 8 + Java 8 + Postgres 9.3 Jelastic Enviroment I get the following exception when trying to access the database:
2015-01-28 18:06:11 HibernatePersistence [WARN]…
Marcos J.C Kichel
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JPA+hibernate+spring, 2 separate tables in same DB
I'm trying to write a single page app which will persist the current users into a database table(HSQL) and also a list of "stories"(just 1 liners) into a separate table (in same DB)
I have 2 POJOs, User and Story. Then 2 dtos, 2 repositories etc but…
Phil
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Spring JPA and Sharing Entity Manager across multiple WARS and @Persistence Context thread safety
I read about about Persistence Context but not able to get a clear picture about my doubts which are as follows.
1. I have a DAO class which as a @PersistenceContext(unitName="") private EntityManager entityManager and from my Service method i am…
Art
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Packaging persistence.xml outside of jar with OpenJPA
So I'm using JPA (OpenJPA 2.3.0 implementation) in perhaps a rather unconventional way. I'm writing a piece of software that will maintain some personnel data and assign work to said personnel. What type of work it assigns is undefined - the user…
mtelewicz
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use of EntityManagerFactory causing duplicate primary key exceptions
Hey guys, my goal is create an EntityManager using properties dependent on which database is in use. I've seen something like this done in all my Google searches(I made the code more basic for the purpose of this question):
@PersistenceUnit
private…
bradd
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When/How does jdbc percistency enities get created
Question :
When and how do the JDBC tables get created ?
Cause the wierd thing is that i can't find any User tabel.
I find it wierd that there is a tabel for the many-on-many relationship between User and Dish yet there is no User tabel to store the…
MrMe TumbsUp
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Adding separate persistenceUnit still looks at broadleaf own entities and fails
I followed this tutorial and set off to add another persistence unit pointing to a separate database. It should not share broadleaf own entities. So...
The core project now holds applicationContext.xml with these new beans: