NPersistence Reference Guide
.NET Persistence API (NPA) - JPA for the .NET platform (for C#, Visual Basic and other .NET languages). .NET Persistence API (NPA)
The PersistenceUnitUtil type exposes the following methods.
Methods
 Public Protected | Instance Static | Declared Inherited | XNA Framework Only .NET Compact Framework Only |
| Member | Description | |
|---|---|---|
 | GetIdentifier(Object) | Return the id of the entity.
A generated id is not guaranteed to be available until after
the database insert has occurred.
Returns null if the entity does not yet have an id.
entity instance Return Valueid of the entity if the object is found not to be an entity |
| IsLoaded(Object) | Determine the load state of an entity belonging to the
persistence unit. This method can be used to determine the
load state of an entity passed as a reference. An entity is
considered loaded if all attributes for which
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.
entity instance whose load state is to be determined Return Valuefalse if the entity has not been loaded, else true |
| IsLoaded(Object) | Determine the load state of an entity.
This method can be used to determine the load state
of an entity passed as a reference. An entity is
considered loaded if all attributes for which
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. (Inherited from PersistenceUtil.) |
| IsLoaded(Object, String) | Determine the load state of a given persistent attribute
of an entity belonging to the persistence unit.
entity instance containing the attribute name of attribute whose load state is
to be determined
Return Valuefalse if entity's state has not been loaded or if the attribute state has not been loaded, else true |
| IsLoaded(Object, String) | Determine the load state of a given persistent attribute. (Inherited from PersistenceUtil.) |
See Also