Module org.eclipse.persistence.core

Package org.eclipse.persistence.internal.indirection

Class UnitOfWorkQueryValueHolder<T>

java.lang.Object

org.eclipse.persistence.internal.indirection.DatabaseValueHolder<T>

org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder<T>

org.eclipse.persistence.internal.indirection.UnitOfWorkQueryValueHolder<T>

All Implemented Interfaces:

Serializable, Cloneable, ValueHolderInterface<T>, WeavedAttributeValueHolderInterface<T>, WrappingValueHolder<T>

public class UnitOfWorkQueryValueHolder<T>
extends UnitOfWorkValueHolder<T>

UnitOfWorkQueryValueHolder wraps a database-stored object and implements behavior to access it. The object is read from the database by invoking a user-specified query. This value holder is used only in the unit of work.

Author:

Sati

See Also:

Serialized Form

Field Summary

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

backupValueHolder, mapping, relationshipSourceObject, remoteUnitOfWork, sourceAttributeName, sourceObject, wrappedValueHolder, wrappedValueHolderRemoteID

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

isCoordinatedWithProperty, isInstantiated, row, session, value

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

shouldToStringInstantiate

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	UnitOfWorkQueryValueHolder()
protected	UnitOfWorkQueryValueHolder(ValueHolderInterface<T> attributeValue, Object clone, DatabaseMapping mapping, UnitOfWorkImpl unitOfWork)
	UnitOfWorkQueryValueHolder(ValueHolderInterface<T> attributeValue, Object clone, ForeignReferenceMapping mapping, AbstractRecord row, UnitOfWorkImpl unitOfWork)

Method Summary

Modifier and Type	Method	Description
protected Object	buildBackupCloneFor(Object cloneAttributeValue)	Backup the clone attribute value.
T	buildCloneFor(Object originalAttributeValue)	Clone the original attribute value.
void	setValue(T theValue)	Ensure that the backup value holder is populated.
void	updateForeignReferenceRemove(Object value)	INTERNAL: Here we now must check for bi-directional relationship.
void	updateForeignReferenceSet(Object value, Object oldValue)	INTERNAL: Here we now must check for bi-directional relationship.

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

getBackupValueHolder, getMapping, getRelationshipSourceObject, getRemoteUnitOfWork, getSourceAttributeName, getSourceObject, getUnitOfWork, getValueFromServerObject, getWrappedValueHolder, getWrappedValueHolderRemoteID, instantiate, instantiateForUnitOfWorkValueHolder, instantiateImpl, isEasilyInstantiated, isPessimisticLockingValueHolder, isSerializedRemoteUnitOfWorkValueHolder, releaseWrappedValueHolder, resetFields, setBackupValueHolder, setMapping, setRelationshipSourceObject, setRemoteUnitOfWork, setSourceAttributeName, setSourceObject, setWrappedValueHolder, shouldAllowInstantiationDeferral

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

UnitOfWorkQueryValueHolder

protected UnitOfWorkQueryValueHolder()

UnitOfWorkQueryValueHolder

protected UnitOfWorkQueryValueHolder(ValueHolderInterface<T> attributeValue,
                                     Object clone,
                                     DatabaseMapping mapping,
                                     UnitOfWorkImpl unitOfWork)

UnitOfWorkQueryValueHolder

public UnitOfWorkQueryValueHolder(ValueHolderInterface<T> attributeValue,
                                  Object clone,
                                  ForeignReferenceMapping mapping,
                                  AbstractRecord row,
                                  UnitOfWorkImpl unitOfWork)

Method Detail

buildBackupCloneFor

protected Object buildBackupCloneFor(Object cloneAttributeValue)

Backup the clone attribute value.

Specified by:

buildBackupCloneFor in class UnitOfWorkValueHolder<T>

buildCloneFor

public T buildCloneFor(Object originalAttributeValue)

Clone the original attribute value.

Specified by:

buildCloneFor in class UnitOfWorkValueHolder<T>

setValue

public void setValue(T theValue)

Ensure that the backup value holder is populated.

Specified by:

setValue in interface ValueHolderInterface<T>

Overrides:

setValue in class DatabaseValueHolder<T>

updateForeignReferenceRemove

public void updateForeignReferenceRemove(Object value)

INTERNAL: Here we now must check for bi-directional relationship. If the mapping has a relationship partner then we must maintain the original relationship. We only worry about ObjectReferenceMappings as the collections mappings will be handled by transparentIndirection

updateForeignReferenceSet

public void updateForeignReferenceSet(Object value,
                                      Object oldValue)

INTERNAL: Here we now must check for bi-directional relationship. If the mapping has a relationship partner then we must maintain the original relationship. We only worry about ObjectReferenceMappings as the collections mappings will be handled by transparentIndirection