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/*******************************************************************************
* Copyright (c) 2010-2016, Tamas Szabo, 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.viatra.runtime.rete.network.communication.timely;
import tools.refinery.viatra.runtime.rete.network.IGroupable;
import tools.refinery.viatra.runtime.rete.network.Node;
import tools.refinery.viatra.runtime.rete.network.communication.Timestamp;
/**
* {@link Node}s that implement this interface can resume folding of their states when instructed during timely evaluation.
*
* @since 2.3
* @author Tamas Szabo
*/
public interface ResumableNode extends Node, IGroupable {
/**
* When called, the folding of the state shall be resumed at the given timestamp. The resumable is expected to
* do a folding step at the given timestamp only. Afterwards, folding shall be interrupted, even if there is more
* folding to do towards higher timestamps.
*/
public void resumeAt(final Timestamp timestamp);
/**
* Returns the smallest timestamp where lazy folding shall be resumed, or null if there is no more folding to do in this
* resumable.
*/
public Timestamp getResumableTimestamp();
}
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