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* as indicated by the @author tags. See the copyright.txt file 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.jboss.cache.interceptors;
import org.jboss.cache.Fqn;
import org.jboss.cache.InvocationContext;
import org.jboss.cache.factories.annotations.Inject;
import org.jboss.cache.mvcc.MVCCNodeHelper;
import org.jboss.cache.mvcc.ReadCommittedNode;
/**
* MVCC specific version of the LegacyDataGravitatorInterceptor
*
* @author Manik Surtani (<a href="mailto:manik AT jboss DOT org">manik AT jboss DOT org</a>)
* @since 3.0
*/
public class DataGravitatorInterceptor extends LegacyDataGravitatorInterceptor
{
MVCCNodeHelper helper;
@Inject
public void injectMvccNodeHelper(MVCCNodeHelper helper)
{
this.helper = helper;
}
@Override
protected boolean nodeDoesNotExist(InvocationContext ctx, Fqn fqn)
{
ReadCommittedNode node = (ReadCommittedNode) ctx.lookUpNode(fqn);
return node == null || node.isNullNode();
}
@Override
protected void wrapIfNeeded(InvocationContext ctx, Fqn fqnToWrap) throws InterruptedException
{
helper.wrapNodeForReading(ctx, fqnToWrap, true);
}
}