Module org.eclipse.persistence.core
Package org.eclipse.persistence.indirection

Interface ValueHolderInterface<T>

All Superinterfaces:
Cloneable
All Known Subinterfaces:
WeavedAttributeValueHolderInterface<T>
All Known Implementing Classes:
BackupValueHolder, BatchValueHolder, CacheBasedValueHolder, DatabaseValueHolder, EISOneToManyQueryBasedValueHolder, ProtectedValueHolder, QueryBasedValueHolder, RemoteValueHolder, TransformerBasedValueHolder, UnitOfWorkQueryValueHolder, UnitOfWorkTransformerValueHolder, UnitOfWorkValueHolder, ValueHolder
public interface ValueHolderInterface<T> extends Cloneable
Purpose: Interface to allow lazy loading of an object's relationships from the database.
See Also:

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final boolean
    shouldToStringInstantiate
    Can be used to have transparent indirection toString instantiate the objects.

  • Method Summary

    Modifier and Type
    Method
    Description
    Object
    clone()
    PUBLIC: Copy the value holder (but not its' reference, shallow).
    T
    getValue()
    PUBLIC: Return the value.
    boolean
    isInstantiated()
    PUBLIC: Return whether the contents have been read from the database.
    void
    setValue(T value)
    PUBLIC: Set the value.

  • Field Details

    • shouldToStringInstantiate

      static final boolean shouldToStringInstantiate
      Can be used to have transparent indirection toString instantiate the objects.
      See Also:

  • Method Details

    • clone

      Object clone()
      PUBLIC: Copy the value holder (but not its' reference, shallow).

    • getValue

      T getValue()
      PUBLIC: Return the value.

    • isInstantiated

      boolean isInstantiated()
      PUBLIC: Return whether the contents have been read from the database. This is used periodically by the indirection policy to determine whether to trigger the database read.

    • setValue

      void setValue(T value)
      PUBLIC: Set the value.