public interface ProviderUtil
PersistenceUtil implementation to determine
 the load status of an entity or entity attribute.| Modifier and Type | Method and Description | 
|---|---|
| LoadState | isLoaded(Object entity)If the provider determines that the entity has been provided
 by itself and that the state of all attributes for which
  FetchType.EAGERhas been specified have been loaded, this 
 method returnsLoadState.LOADED. | 
| LoadState | isLoadedWithoutReference(Object entity,
                        String attributeName)If the provider determines that the entity has been provided
 by itself and that the state of the specified attribute has
 been loaded, this method returns  LoadState.LOADED. | 
| LoadState | isLoadedWithReference(Object entity,
                     String attributeName)If the provider determines that the entity has been provided
 by itself and that the state of the specified attribute has
 been loaded, this method returns  LoadState.LOADED. | 
LoadState isLoadedWithoutReference(Object entity, String attributeName)
LoadState.LOADED.
  If the provider determines that the entity has been provided
 by itself and that either entity attributes with FetchType.EAGER 
 have not been loaded or that the state of the specified
 attribute has not been loaded, this methods returns
 LoadState.NOT_LOADED.
 
 If a provider cannot determine the load state, this method
 returns LoadState.UNKNOWN.
 
The provider's implementation of this method must not obtain a reference to an attribute value, as this could trigger the loading of entity state if the entity has been provided by a different provider.
entity - entity instanceattributeName - name of attribute whose load status is
        to be determinedLoadState isLoadedWithReference(Object entity, String attributeName)
LoadState.LOADED.
  If a provider determines that the entity has been provided
 by itself and that either the entity attributes with FetchType.EAGER
 have not been loaded or that the state of the specified
 attribute has not been loaded, this method returns
 return LoadState.NOT_LOADED.
 
 If the provider cannot determine the load state, this method
 returns LoadState.UNKNOWN.
 
 The provider's implementation of this method is permitted to
 obtain a reference to the attribute value.  (This access is
 safe because providers which might trigger the loading of the
 attribute state will have already been determined by
 isLoadedWithoutReference. )
entity - entity instanceattributeName - name of attribute whose load status is
        to be determinedLoadState isLoaded(Object entity)
FetchType.EAGER has been specified have been loaded, this 
 method returns LoadState.LOADED.
  If the provider determines that the entity has been provided
 by itself and that not all attributes with FetchType.EAGER 
 have been loaded, this method returns LoadState.NOT_LOADED.
 
 If the provider cannot determine if the entity has been
 provided by itself, this method returns LoadState.UNKNOWN.
 
The provider's implementation of this method must not obtain a reference to any attribute value, as this could trigger the loading of entity state if the entity has been provided by a different provider.
entity - whose loaded status is to be determinedCopyright © 2017. All Rights Reserved.