Module org.eclipse.persistence.core

Package org.eclipse.persistence.internal.sessions

Class ChangeRecord

java.lang.Object

org.eclipse.persistence.internal.sessions.ChangeRecord

All Implemented Interfaces:

Serializable, ChangeRecord

Direct Known Subclasses:

AggregateChangeRecord, DeferrableChangeRecord, DirectToFieldChangeRecord, ObjectReferenceChangeRecord, TransformationMappingChangeRecord

public abstract class ChangeRecord
extends Object
implements Serializable, ChangeRecord

Purpose: This class was designed as a superclass to all possible Change Record types. These Change Records holds the changes made to the objects

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected String	attribute	This is the attribute name that this change record represents
protected DatabaseMapping	mapping	This attribute stores the mapping along with the attribute so that the mapping does not need to be looked up
protected ObjectChangeSet	owner	This is the object change set that holds this record

Constructor Summary

Constructors

Constructor	Description
ChangeRecord()

Method Summary

Modifier and Type	Method	Description
String	getAttribute()	ADVANCED: Returns the name of the attribute this ChangeRecord Represents
DatabaseMapping	getMapping()	ADVANCED: Returns the mapping for the attribute this ChangeRecord Represents
ObjectChangeSet	getOwner()	ADVANCED: This method returns the ObjectChangeSet that references this ChangeRecord
abstract void	mergeRecord(ChangeRecord mergeFromRecord, UnitOfWorkChangeSet mergeToChangeSet, UnitOfWorkChangeSet mergeFromChangeSet)	INTERNAL: This method will be used to merge one record into another
void	prepareForSynchronization(AbstractSession session)	INTERNAL: Ensure this change record is ready to by sent remotely for cache synchronization In general, this means setting the CacheSynchronizationType on any ObjectChangeSets associated with this ChangeRecord
void	setAttribute(String newValue)	Sets the name of the attribute that this Record represents.
void	setMapping(DatabaseMapping mapping)	Sets the mapping for the attribute that this Record represents
void	setOwner(ObjectChangeSet newOwner)	INTERNAL: This method is used to set the ObjectChangeSet that uses this Record in that Record.
String	toString()
void	updateChangeRecordWithNewValue(Object newValue)	INTERNAL: used by the record to update the new value ignores the value in the default implementation
abstract void	updateReferences(UnitOfWorkChangeSet mergeToChangeSet, UnitOfWorkChangeSet mergeFromChangeSet)	INTERNAL: This method will be used to update the objectsChangeSets references

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.persistence.sessions.changesets.ChangeRecord

getOldValue

Field Details

attribute

protected String attribute

This is the attribute name that this change record represents

mapping

protected transient DatabaseMapping mapping

This attribute stores the mapping along with the attribute so that the mapping does not need to be looked up

owner

protected ObjectChangeSet owner

This is the object change set that holds this record

Constructor Details

ChangeRecord

public ChangeRecord()

Method Details

getAttribute

public String getAttribute()

ADVANCED: Returns the name of the attribute this ChangeRecord Represents

Specified by:

getAttribute in interface ChangeRecord

Returns:

String

getMapping

public DatabaseMapping getMapping()

ADVANCED: Returns the mapping for the attribute this ChangeRecord Represents

getOwner

public ObjectChangeSet getOwner()

Description copied from interface: ChangeRecord

ADVANCED: This method returns the ObjectChangeSet that references this ChangeRecord

Specified by:

getOwner in interface ChangeRecord

Returns:

org.eclipse.persistence.sessions.changesets.ObjectChangeSet

mergeRecord

public abstract void mergeRecord(ChangeRecord mergeFromRecord,
 UnitOfWorkChangeSet mergeToChangeSet,
 UnitOfWorkChangeSet mergeFromChangeSet)

INTERNAL: This method will be used to merge one record into another

prepareForSynchronization

public void prepareForSynchronization(AbstractSession session)

INTERNAL: Ensure this change record is ready to by sent remotely for cache synchronization In general, this means setting the CacheSynchronizationType on any ObjectChangeSets associated with this ChangeRecord

setAttribute

public void setAttribute(String newValue)

Sets the name of the attribute that this Record represents.

setMapping

public void setMapping(DatabaseMapping mapping)

Sets the mapping for the attribute that this Record represents

setOwner

public void setOwner(ObjectChangeSet newOwner)

INTERNAL: This method is used to set the ObjectChangeSet that uses this Record in that Record.

Parameters:

newOwner - The changeSet that uses this record.

toString

public String toString()

Overrides:

toString in class Object

updateChangeRecordWithNewValue

public void updateChangeRecordWithNewValue(Object newValue)

INTERNAL: used by the record to update the new value ignores the value in the default implementation

updateReferences

public abstract void updateReferences(UnitOfWorkChangeSet mergeToChangeSet,
 UnitOfWorkChangeSet mergeFromChangeSet)

INTERNAL: This method will be used to update the objectsChangeSets references