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UnitOfWorkChangeSet.java
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UnitOfWorkChangeSet.java
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/**
* Copyright (C) 2022 Czech Technical University in Prague
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details. You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package cz.cvut.kbss.jopa.sessions;
import java.util.Collection;
import java.util.Set;
public interface UnitOfWorkChangeSet {
/**
* Add new ObjectChangeSet to this changeSet.
*
* @param objectChangeSet ObjectChangeSet
*/
void addObjectChangeSet(ObjectChangeSet objectChangeSet);
/**
* Add a change set for newly created object. These changes are held in
* separate attribute and get special treatment when merged into shared
* session cache.
*
* @param newObject ObjectChangeSet
*/
void addNewObjectChangeSet(ObjectChangeSet newObject);
/**
* Adds a change set for deleted object.
*
* @param deletedObject The change set to add
*/
void addDeletedObjectChangeSet(ObjectChangeSet deletedObject);
/**
* Returns change sets for existing modified objects.
* <p>
* New object and deleted object change sets are not included.
*
* @return Collection of change sets
*/
Collection<ObjectChangeSet> getExistingObjectsChanges();
/**
* Removes change record of the specified original object, if present, cancelling the changes.
*
* @param original The object whose changes should be removed
*/
void cancelObjectChanges(Object original);
/**
* Gets changes for the specified original object (if there are any).
*
* @param original The object for which changes should be found
* @return Object change set or null, if the object has no changes
*/
ObjectChangeSet getExistingObjectChanges(Object original);
/**
* Returns the collection of deleted objects.
*
* @return Set of change sets
*/
Set<ObjectChangeSet> getDeletedObjects();
/**
* Returns the collection of change sets for newly created objects.
*
* @return Set of change sets
*/
Set<ObjectChangeSet> getNewObjects();
/**
* Returns true if there are deleted objects in this change set.
*
* @return boolean
*/
boolean hasDeleted();
/**
* Returns true if this changeSet has any changes.
*
* @return boolean
*/
boolean hasChanges();
/**
* Are there any new objects in the change set?
*
* @return boolean
*/
boolean hasNew();
}