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/*******************************************************************************
* Copyright (c) 2010-2013, Bergmann Gabor, Istvan Rath and Daniel Varro
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-v20.html.
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package tools.refinery.interpreter.rete.eval;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import tools.refinery.interpreter.rete.network.ReteContainer;
import tools.refinery.interpreter.rete.network.communication.Timestamp;
import tools.refinery.interpreter.matchers.tuple.Tuple;
import tools.refinery.interpreter.matchers.util.CollectionsFactory;
import tools.refinery.interpreter.matchers.util.Direction;
import tools.refinery.interpreter.matchers.util.timeline.Timeline;
/**
* @author Bergmann Gabor
*
*/
public class MemorylessEvaluatorNode extends AbstractEvaluatorNode {
/**
* @since 1.5
*/
public MemorylessEvaluatorNode(final ReteContainer reteContainer, final EvaluatorCore core) {
super(reteContainer, core);
}
@Override
public void pullInto(final Collection<Tuple> collector, final boolean flush) {
final Collection<Tuple> parentTuples = new ArrayList<Tuple>();
propagatePullInto(parentTuples, flush);
for (final Tuple parentTuple : parentTuples) {
final Iterable<Tuple> output = core.performEvaluation(parentTuple);
if (output != null) {
final Iterator<Tuple> itr = output.iterator();
while (itr.hasNext()) {
collector.add(itr.next());
}
}
}
}
@Override
public void pullIntoWithTimeline(final Map<Tuple, Timeline<Timestamp>> collector, final boolean flush) {
final Map<Tuple, Timeline<Timestamp>> parentTuples = CollectionsFactory.createMap();
propagatePullIntoWithTimestamp(parentTuples, flush);
for (final Entry<Tuple, Timeline<Timestamp>> entry : parentTuples.entrySet()) {
final Iterable<Tuple> output = core.performEvaluation(entry.getKey());
if (output != null) {
final Iterator<Tuple> itr = output.iterator();
while (itr.hasNext()) {
collector.put(itr.next(), entry.getValue());
}
}
}
}
@Override
public void update(final Direction direction, final Tuple input, final Timestamp timestamp) {
final Iterable<Tuple> output = core.performEvaluation(input);
if (output != null) {
propagateIterableUpdate(direction, output, timestamp);
}
}
}
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