Package org.hibernate.engine.loading

Class LoadContexts

java.lang.Object
org.hibernate.engine.loading.LoadContexts
public class LoadContexts extends Object
Maps result-sets to specific contextual data related to processing that result-sets.

Implementation note: internally an IdentityMap is used to maintain the mappings; IdentityMap was chosen because I'd rather not be dependent upon potentially bad

invalid reference 
ResultSet#equals
and {ResultSet#hashCode} implementations.

Considering the JDBC-redesign work, would further like this contextual info not mapped seperately, but available based on the result set being processed. This would also allow maintaining a single mapping as we could reliably get notification of the result-set closing...

  • Constructor Details

    • LoadContexts

      public LoadContexts(PersistenceContext persistenceContext)
      Creates and binds this to the given persistence context.
      Parameters:
      persistenceContext - The persistence context to which this will be bound.

  • Method Details

    • getPersistenceContext

      public PersistenceContext getPersistenceContext()
      Retrieves the persistence context to which this is bound.
      Returns:
      The persistence context to which this is bound.

    • cleanup

      public void cleanup(ResultSet resultSet)
      Release internal state associated with the given result set.

      This should be called when we are done with processing said result set, ideally as the result set is being closed.

      Parameters:
      resultSet - The result set for which it is ok to release associated resources.

    • cleanup

      public void cleanup()
      Release internal state associated with *all* result sets.

      This is intended as a "failsafe" process to make sure we get everything cleaned up and released.

    • hasLoadingCollectionEntries

      public boolean hasLoadingCollectionEntries()
      Do we currently have any internal entries corresponding to loading collections?
      Returns:
      True if we currently hold state pertaining to loading collections; false otherwise.

    • hasRegisteredLoadingCollectionEntries

      public boolean hasRegisteredLoadingCollectionEntries()
      Do we currently have any registered internal entries corresponding to loading collections?
      Returns:
      True if we currently hold state pertaining to a registered loading collections; false otherwise.

    • getCollectionLoadContext

      public CollectionLoadContext getCollectionLoadContext(ResultSet resultSet)
      Get the CollectionLoadContext associated with the given ResultSet, creating one if needed.
      Parameters:
      resultSet - The result set for which to retrieve the context.
      Returns:
      The processing context.

    • locateLoadingCollection

      public PersistentCollection locateLoadingCollection(CollectionPersister persister, Serializable ownerKey)
      Attempt to locate the loading collection given the owner's key. The lookup here occurs against all result-set contexts...
      Parameters:
      persister - The collection persister
      ownerKey - The owner key
      Returns:
      The loading collection, or null if not found.

    • getEntityLoadContext

      public EntityLoadContext getEntityLoadContext(ResultSet resultSet)