| /* |
| * Copyright (c) 1998, 2021 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Oracle - initial API and implementation from Oracle TopLink |
| package org.eclipse.persistence.internal.sessions; |
| |
| import org.eclipse.persistence.sessions.DataRecord; |
| import org.eclipse.persistence.sessions.DatabaseRecord; |
| |
| /** |
| * <p> |
| * <b>Purpose</b>: To record the changes for attributes that can be represented as Transformation Mapping |
| * </p> |
| */ |
| public class TransformationMappingChangeRecord extends ChangeRecord implements org.eclipse.persistence.sessions.changesets.TransformationMappingChangeRecord { |
| protected AbstractRecord rowCollection; |
| protected transient Object oldValue; |
| |
| /** |
| * This default constructor. |
| */ |
| public TransformationMappingChangeRecord() { |
| super(); |
| } |
| |
| /** |
| * This is the basic constructor for this change Record. |
| * This change record stores the fields that have changed as that is our current method of comparing |
| * changes. |
| */ |
| public TransformationMappingChangeRecord(ObjectChangeSet owner) { |
| this.owner = owner; |
| } |
| |
| /** |
| * ADVANCED: |
| * This method is used to access the changes of the fields in a transformation mapping. |
| */ |
| @Override |
| public DataRecord getRecord() { |
| if (rowCollection == null) { |
| this.rowCollection = new DatabaseRecord(); |
| } |
| return rowCollection; |
| } |
| |
| /** |
| * INTERNAL: |
| * This method will be used to merge one record into another |
| */ |
| @Override |
| public void mergeRecord(ChangeRecord mergeFromRecord, UnitOfWorkChangeSet mergeToChangeSet, UnitOfWorkChangeSet mergeFromChangeSet) { |
| this.rowCollection = (AbstractRecord)((TransformationMappingChangeRecord)mergeFromRecord).getRecord(); |
| } |
| |
| /** |
| * This method is used to add a changed value to the changeRecord. The changes in a transformation |
| * mapping are recorded on the database field level |
| * @param record Record the values from the transformation mapping |
| */ |
| public void setRow(AbstractRecord record) { |
| this.rowCollection = record; |
| } |
| |
| /** |
| * INTERNAL: |
| * This method will be used to update the objectsChangeSets references |
| * There is nothing to do for this mapping type as there are no object |
| * references |
| */ |
| @Override |
| public void updateReferences(UnitOfWorkChangeSet mergeToChangeSet, UnitOfWorkChangeSet mergeFromChangeSet) { |
| } |
| |
| /** |
| * ADVANCED: |
| * Return the old value of the attribute represented by this ChangeRecord. |
| */ |
| @Override |
| public Object getOldValue() { |
| return this.oldValue; |
| } |
| |
| /** |
| * INTERNAL: |
| * Set the old value of the attribute represented by this ChangeRecord. |
| */ |
| public void setOldValue(Object oldValue) { |
| this.oldValue = oldValue; |
| } |
| } |