2.7.39 @PersistenceContext

Organization of this subsection
(1) Description
(2) Element

(1) Description

This annotation defines the reference of a container-managed EntityManager. 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 @PersistenceContext:

Element nameOptional/RequiredElement description
nameOptionalThis element specifies the lookup name of the EntityManager.
unitNameOptionalThis element specifies the name of the persistence unit defined in the persistence.xml file.
typeOptionalThis element specifies the type of lifecycle of the persistence context.
propertiesOptionalThis element specifies the vendor--dependent properties specified in @PersistenceProperty.

The details of attributes that are supported with Cosminexus JPA provider are as follows:

(a) name element
Type
String
Description
This element specifies the lookup name of the EntityManager.
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
(c) type element
Type
PersistenceContextType
Description
This element specifies the type of lifecycle of the persistence context.
The following two types of values can be specified:
  • TRANSACTION: Persistence context of the transaction scope
  • EXTENDED: Extended persistence context
Default value
TRANSACTION
(d) properties element
Type
PersistenceProperty[]
Description
This element specifies the vendor-dependent properties of the JPA Provider specified in @PersistenceProperty.
You can specify the value within the specifiable range of the arrays of @PersistenceProperty. For details, see 2.7.41 @PersistenceProperty.
When the properties element is specified, the properties that cannot be recognized are ignored.
Default value
Blank array