/*
* Redberry: symbolic tensor computations.
*
* Copyright (c) 2010-2012:
* Stanislav Poslavsky <stvlpos@mail.ru>
* Bolotin Dmitriy <bolotin.dmitriy@gmail.com>
*
* This file is part of Redberry.
*
* Redberry 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.
*
* Redberry 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 Redberry. If not, see <http://www.gnu.org/licenses/>.
*/
package cc.redberry.transformation.ec;
import cc.redberry.core.tensor.Sum;
import cc.redberry.core.tensor.Tensor;
import cc.redberry.transformation.concurrent.CollectIP;
import cc.redberry.transformation.concurrent.CollectIPFactory;
import java.util.concurrent.ConcurrentLinkedQueue;
/**
*
* @author Dmitry Bolotin
* @author Stanislav Poslavsky
*/
public class NaiveSumCollectIP implements CollectIP {
public final static CollectIPFactory FACTORY = new CollectIPFactory() {
@Override
public CollectIP create() {
return new NaiveSumCollectIP();
}
};
private final ConcurrentLinkedQueue<Tensor> queue = new ConcurrentLinkedQueue<>();
private volatile boolean isClosed = false;
private NaiveSumCollectIP() {
}
@Override
public Tensor result() {
isClosed = true;
return new Sum(queue).equivalent();
}
@Override
public void put(Tensor object) {
if (isClosed)
throw new IllegalStateException("Port is closed");
queue.add(object);
}
}