org.eclipse.persistence.internal.indirection

Class UnitOfWorkTransformerValueHolder

java.lang.Object

org.eclipse.persistence.internal.indirection.DatabaseValueHolder

org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder

org.eclipse.persistence.internal.indirection.UnitOfWorkTransformerValueHolder

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, ValueHolderInterface, WeavedAttributeValueHolderInterface, WrappingValueHolder

public class UnitOfWorkTransformerValueHolder
extends UnitOfWorkValueHolder

UnitOfWorkTransformerValueHolder wraps a database-stored object and implements behavior to access it. The object is read from the database by invoking a user-specified transformer object. This value holder is used only in the unit of work. Most of the methods ignore the actual attribute values and are simply used to trigger instantiation.

Author:

Sati

See Also:

Serialized Form

Field Summary

Fields inherited from interface org.eclipse.persistence.indirection.ValueHolderInterface

shouldToStringInstantiate

Constructor Summary

Constructors

Constructor and Description
UnitOfWorkTransformerValueHolder(ValueHolderInterface attributeValue, java.lang.Object original, java.lang.Object clone, AbstractTransformationMapping mapping, UnitOfWorkImpl unitOfWork)

Method Summary

Modifier and Type	Method and Description
java.lang.Object	buildCloneFor(java.lang.Object originalAttributeValue) Clone the original attribute value.
void	setValue(java.lang.Object theValue) Ensure that the backup value holder is populated.

Methods inherited from class org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder

getMapping, getWrappedValueHolder, getWrappedValueHolderRemoteID, instantiateForUnitOfWorkValueHolder, isEasilyInstantiated, isPessimisticLockingValueHolder, isSerializedRemoteUnitOfWorkValueHolder, releaseWrappedValueHolder, setBackupValueHolder, shouldAllowInstantiationDeferral

Methods inherited from class org.eclipse.persistence.internal.indirection.DatabaseValueHolder

clone, getRow, getSession, getValue, getValue, isCoordinatedWithProperty, isInstantiated, isNewlyWeavedValueHolder, postInstantiate, privilegedSetValue, setInstantiated, setIsCoordinatedWithProperty, setIsNewlyWeavedValueHolder, setRow, setSession, setUninstantiated, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

UnitOfWorkTransformerValueHolder

public UnitOfWorkTransformerValueHolder(ValueHolderInterface attributeValue,
                                        java.lang.Object original,
                                        java.lang.Object clone,
                                        AbstractTransformationMapping mapping,
                                        UnitOfWorkImpl unitOfWork)

Method Detail

buildCloneFor

public java.lang.Object buildCloneFor(java.lang.Object originalAttributeValue)

Clone the original attribute value.

Specified by:

buildCloneFor in class UnitOfWorkValueHolder

setValue

public void setValue(java.lang.Object theValue)

Ensure that the backup value holder is populated.

Specified by:

setValue in interface ValueHolderInterface

Overrides:

setValue in class DatabaseValueHolder