Interface PersistenceUnitUtil

Method Detail

• isLoaded

  boolean isLoaded(Object entity,
                   String attributeName)

  Determine the load state of a given persistent attribute of an entity belonging to the persistence unit.

  Specified by:

  isLoaded in interface PersistenceUtil

  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

• isLoaded

  boolean isLoaded(Object entity)

  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.

  Specified by:

  isLoaded in interface PersistenceUtil

  Parameters:

  entity - entity instance whose load state is to be determined

  Returns:

  false if the entity has not been loaded, else true

• getIdentifier

  Object getIdentifier(Object entity)

  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.

  Parameters:

  entity - entity instance

  Returns:

  id of the entity

  Throws:

  IllegalArgumentException - if the object is found not to be an entity