8.12.42 @PersistenceUnit
- Organization of this subsection
(1) Description
This annotation defines the reference of the EntityManagerFactory. This annotation is added to the class to be looked up.
The applicable targets are class, method, and field.
(2) Element
The following table lists the elements of @PersistenceUnit:
|
Element name |
Optional/Required |
Element description |
|---|---|---|
|
Optional |
This element specifies the lookup name of the EntityManagerFactory. |
|
|
Optional |
This element specifies the name of the persistence unit defined in the persistence.xml file. |
The details of attributes supported with Cosminexus JPA provider are as follows:
(a) name element
- Type
-
String
- Description
-
This element specifies the lookup name of the EntityManagerFactory. This element specifies the name of the EntityManagerFactory to be registered in the JNDI name space.
The value that can be specified is a character string.
You are not required to specify this element when using a DI.
- Default value
-
Null character string
(b) unitName element
- Type
-
String
- Description
-
This element specifies the name of the persistence unit defined in the persistence.xml file.
When the unitName element is specified, set the same name for the persistence unit used by EntityManagerFactory that can be accessed by the JNDI name space.
- Default value
-
Null character string