/**
* GRANITE DATA SERVICES
* Copyright (C) 2006-2015 GRANITE DATA SERVICES S.A.S.
*
* This file is part of the Granite Data Services Platform.
*
* Granite Data Services is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Granite Data Services 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 Lesser
* General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA, or see <http://www.gnu.org/licenses/>.
*/
package org.granite.client.persistence.collection;
import java.io.ObjectInput;
import java.util.HashMap;
import java.util.Map;
import java.util.SortedMap;
import org.granite.messaging.persistence.PersistentCollectionSnapshot;
/**
* @author Franck WOLFF
*/
public class PersistentMap<K, V> extends AbstractPersistentMapCollection<K, V, Map<K, V>> implements Map<K, V> {
private static final long serialVersionUID = 1L;
public PersistentMap() {
}
public PersistentMap(boolean initialized) {
this(initialized ? new HashMap<K, V>() : null, false);
}
public PersistentMap(Map<K, V> collection) {
this(collection, true);
}
public PersistentMap(Map<K, V> collection, boolean clone) {
if (collection instanceof SortedMap)
throw new IllegalArgumentException("Should not be a SortedMap: " + collection);
if (collection != null)
init(clone ? new HashMap<K, V>(collection) : collection, null, false);
}
@Override
public void doInitialize(Map<K, V> map, boolean empty) {
init(empty ? new HashMap<K, V>() : map, null, false);
}
@Override
protected PersistentCollectionSnapshot createSnapshot(Object io, boolean forReading) {
PersistentCollectionSnapshotFactory factory = PersistentCollectionSnapshotFactory.newInstance(io);
if (forReading || !wasInitialized())
return factory.newPersistentCollectionSnapshot(getDetachedState());
return factory.newPersistentCollectionSnapshot(true, getDetachedState(), isDirty(), this);
}
@SuppressWarnings("unchecked")
@Override
protected void updateFromSnapshot(ObjectInput in, PersistentCollectionSnapshot snapshot) {
if (snapshot.isInitialized())
init(new HashMap<K, V>((Map<K, V>)snapshot.getElementsAsMap()), snapshot.getDetachedState(), snapshot.isDirty());
else
init(null, snapshot.getDetachedState(), false);
}
public PersistentMap<K, V> clone(boolean uninitialize) {
PersistentMap<K, V> map = new PersistentMap<K, V>();
if (wasInitialized() && !uninitialize)
map.init(getCollection(), null, isDirty());
return map;
}
}