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UnitOfWorkChangeSetImpl.java
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UnitOfWorkChangeSetImpl.java
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/**
* Copyright (C) 2016 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.change;
import cz.cvut.kbss.jopa.sessions.ObjectChangeSet;
import cz.cvut.kbss.jopa.sessions.UnitOfWorkChangeSet;
import java.util.*;
public class UnitOfWorkChangeSetImpl implements UnitOfWorkChangeSet {
private Set<ObjectChangeSet> deletedObjects;
private Map<Object, ObjectChangeSet> objectChanges;
private Set<ObjectChangeSet> newObjectChanges;
public UnitOfWorkChangeSetImpl() {
super();
this.objectChanges = new HashMap<>();
this.deletedObjects = new HashSet<>();
this.newObjectChanges = new HashSet<>();
}
@Override
public void addObjectChangeSet(ObjectChangeSet objectChangeSet) {
if (objectChangeSet.isNew()) {
addNewObjectChangeSet(objectChangeSet);
} else {
objectChanges.put(objectChangeSet.getChangedObject(), objectChangeSet);
}
}
@Override
public void addDeletedObjectChangeSet(ObjectChangeSet deletedObject) {
deletedObjects.add(deletedObject);
}
@Override
public void addNewObjectChangeSet(ObjectChangeSet newObject) {
newObject.setNew(true);
newObjectChanges.add(newObject);
}
@Override
public Collection<ObjectChangeSet> getExistingObjectsChanges() {
return Collections.unmodifiableCollection(objectChanges.values());
}
@Override
public ObjectChangeSet getExistingObjectChanges(Object original) {
return objectChanges.get(original);
}
@Override
public Set<ObjectChangeSet> getDeletedObjects() {
return this.deletedObjects;
}
@Override
public Set<ObjectChangeSet> getNewObjects() {
return this.newObjectChanges;
}
@Override
public boolean hasDeleted() {
return !deletedObjects.isEmpty();
}
@Override
public boolean hasChanges() {
return hasDeleted() || hasNew() || !objectChanges.isEmpty();
}
@Override
public boolean hasNew() {
return !this.newObjectChanges.isEmpty();
}
}