/*
* JBoss, Home of Professional Open Source
* Copyright 2009 Red Hat Inc. and/or its affiliates and other
* contributors as indicated by the @author tags. All rights reserved.
* See the copyright.txt in the distribution for a full listing of
* individual contributors.
*
* This 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.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.infinispan.container.entries;
import org.infinispan.container.versioning.EntryVersion;
/**
* A null entry that is read in for removal
*
* @author Manik Surtani
* @since 4.0
*/
public class NullMarkerEntryForRemoval extends RepeatableReadEntry {
public NullMarkerEntryForRemoval(Object key, EntryVersion version) {
super(key, null, version, -1);
}
/**
* @return always returns true
*/
@Override
public final boolean isNull() {
return true;
}
/**
* @return always returns true so that any get commands, upon getting this entry, will ignore the entry as though it
* were removed.
*/
@Override
public final boolean isRemoved() {
return true;
}
/**
* @return always returns true so that any get commands, upon getting this entry, will ignore the entry as though it
* were invalid.
*/
@Override
public final boolean isValid() {
return false;
}
@Override
public boolean isLockPlaceholder() {
return false;
}
@Override
public void setLockPlaceholder(boolean placeholder) {
// a no-op
}
}