javax.persistence.PersistenceUnitUtil - JPA interface
javax.persistence
Interface PersistenceUnitUtil
- Superinterfaces:
-
PersistenceUtil
The methods of this interface should only be invoked on entity instances obtained from or managed by entity managers for this persistence unit or on new entity instances.
- Since:
- JPA 2.0
- Parameters:
-
entity
- entity instance
- Returns:
- id of the entity
- Throws:
-
IllegalArgumentException
- if the object is found not to be an entity
- Since:
- JPA 2.0
FetchType.EAGER
has been specified have been loaded. The isLoaded(Object, String)
method should be used to determine the load state of an attribute. Not doing so might lead to unintended loading of state.
- Parameters:
-
entity
- whose load state is to be determined
- Returns:
- false if the entity has not been loaded, else true
- Since:
- JPA 2.0
FetchType.EAGER
has been specified have been loaded. The isLoaded(Object, String)
method should be used to determine the load state of an attribute. Not doing so might lead to unintended loading of state.
- Parameters:
-
entity
- entity instance whose load state is to be determined
- Returns:
- false if the entity has not been loaded, else true
- Since:
- JPA 2.0
- Parameters:
-
entity
- entity containing the attribute -
attributeName
- name of attribute whose load state is to be determined
- Returns:
- false if entity's state has not been loaded or if the attribute state has not been loaded, else true
- Since:
- JPA 2.0
- Parameters:
-
entity
- entity instance containing the attribute -
attributeName
- name of attribute whose load state is to be determined
- Returns:
- false if entity's state has not been loaded or if the attribute state has not been loaded, else true
- Since:
- JPA 2.0