Package org.apache.openjpa.kernel

Interface PCData

All Superinterfaces:
Serializable
All Known Subinterfaces:
DataCachePCData, PCDataGenerator.DynamicPCData
All Known Implementing Classes:
AbstractPCData, DataCachePCDataImpl, PCDataImpl
public interface PCData extends Serializable
Holds data about a single persistence capable instance. This interface is used in the caching framework, and may also be used by simple store manager back-ends to hold persistent state.
Author:
Patrick Linskey

  • Method Details

    • getId

      Object getId()
      Return the id of this instance.

    • getType

      Class getType()
      Return the type of this instance.

    • getImplData

      Object getImplData()
      Returns the instance-level impl data, or null if none.

    • setImplData

      void setImplData(Object val)
      Sets the stored instance-level impl data.

    • getVersion

      Object getVersion()
      Returns the current version object that this data was loaded from.

    • setVersion

      void setVersion(Object version)
      Sets the current version object that this data was loaded from.

    • load

      void load(OpenJPAStateManager sm, FetchConfiguration fetch, Object context)
      Loads all fields that are currently stored in the cache into the given state manager.
      Parameters:
      sm - the state manager to load
      fetch - the fetch configuration to use for loading related objects
      context - current context information

    • load

      void load(OpenJPAStateManager sm, BitSet fields, FetchConfiguration fetch, Object context)
      Loads some or all of the marked fields from the cache into the given state manager.
      Parameters:
      sm - the state manager to load
      fields - the fields to load; clear the bits for the fields that are successfully loaded
      fetch - the fetch configuration to use for loading related objects
      context - current context information

    • store

      void store(OpenJPAStateManager sm)
      Store all loaded fields of the state manager.

    • store

      void store(OpenJPAStateManager sm, BitSet fields)
      Store the given fields from the state manager.

    • getData

      Object getData(int i)
      Return the data stored in the given field index.

    • isLoaded

      boolean isLoaded(int i)
      Whether the given field index has stored data.

    • getCache

      String getCache()
      Get the name of the cache where this data is stored.