Package cz.cvut.kbss.jopa.model

Class JOPAPersistenceProvider

java.lang.Object
cz.cvut.kbss.jopa.model.JOPAPersistenceProvider
All Implemented Interfaces:
PersistenceProvider, ProviderUtil
public class JOPAPersistenceProvider extends Object implements PersistenceProvider, ProviderUtil

  • Constructor Details

    • JOPAPersistenceProvider

      public JOPAPersistenceProvider()

  • Method Details

    • createEntityManagerFactory

      public EntityManagerFactoryImpl createEntityManagerFactory(String emName, Map<String,String> properties)
      Description copied from interface: PersistenceProvider
      Called by Persistence class when an EntityManagerFactory is to be created.
      Specified by:
      createEntityManagerFactory in interface PersistenceProvider
      Parameters:
      emName - the name of the persistence unit
      properties - a Map of properties for use by the persistence provider. These properties specify storage connection configuration and may also specify additional configuration.
      Returns:
      EntityManagerFactory for the persistence unit, or null if the provider is not the right provider.

    • getProviderUtil

      public ProviderUtil getProviderUtil()
      Description copied from interface: PersistenceProvider
      Return the utility interface implemented by the persistence provider.
      Specified by:
      getProviderUtil in interface PersistenceProvider
      Returns:
      ProviderUtil interface

    • isLoaded

      public LoadState isLoaded(Object entity)
      Description copied from interface: ProviderUtil
      If the provider determines that the entity has been provided by itself and that the state of all attributes for which 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.

      Specified by:
      isLoaded in interface ProviderUtil
      Parameters:
      entity - whose loaded status is to be determined
      Returns:
      load status of the entity

    • isLoadedWithReference

      public LoadState isLoadedWithReference(Object entity, String attributeName)
      Description copied from interface: ProviderUtil
      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.

      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 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.)

      Specified by:
      isLoadedWithReference in interface ProviderUtil
      Parameters:
      entity - entity instance
      attributeName - name of attribute whose load status is to be determined
      Returns:
      load status of the attribute

    • isLoadedWithoutReference

      public LoadState isLoadedWithoutReference(Object entity, String attributeName)
      Description copied from interface: ProviderUtil
      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.

      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 the 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.

      Specified by:
      isLoadedWithoutReference in interface ProviderUtil
      Parameters:
      entity - entity instance
      attributeName - name of attribute whose load status is to be determined
      Returns:
      load status of the attribute