/*
* Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project 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 or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* <http://www.gnu.org/licenses/> or <http://www.apache.org/licenses/LICENSE-2.0>.
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.persistence.cache.aop;
import java.io.Serializable;
import java.util.Iterator;
import org.smallmind.persistence.Durable;
import org.smallmind.persistence.UpdateMode;
import org.smallmind.persistence.cache.VectoredDao;
public class CacheCoherentIterable<I extends Serializable & Comparable<I>, D extends Durable<I>> implements Iterable<D> {
private final Iterable<D> durableIterable;
private final VectoredDao<I, D> vectoredDao;
private final Class<D> durableClass;
public CacheCoherentIterable (Iterable<D> durableIterable, Class<D> durableClass, VectoredDao<I, D> vectoredDao) {
this.durableIterable = durableIterable;
this.durableClass = durableClass;
this.vectoredDao = vectoredDao;
}
@Override
public Iterator<D> iterator () {
return new CacheCoherentIterator(durableIterable.iterator());
}
private class CacheCoherentIterator implements Iterator<D> {
private Iterator<D> durableIter;
public CacheCoherentIterator (Iterator<D> durableIter) {
this.durableIter = durableIter;
}
public boolean hasNext () {
return durableIter.hasNext();
}
public D next () {
return vectoredDao.persist(durableClass, durableIter.next(), UpdateMode.SOFT);
}
public void remove () {
durableIter.remove();
}
}
}