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/*******************************************************************************
* Copyright (c) 2010-2017, 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;
import java.util.Collection;
import java.util.Map;
import tools.refinery.viatra.runtime.rete.network.Node;
import tools.refinery.viatra.runtime.rete.network.mailbox.Mailbox;
/**
* A communication group represents a set of nodes in the communication graph that form a strongly connected component.
*
* @author Tamas Szabo
* @since 1.6
*/
public abstract class CommunicationGroup implements Comparable<CommunicationGroup> {
public static final String UNSUPPORTED_MESSAGE_KIND = "Unsupported message kind ";
/**
* Marker for the {@link CommunicationTracker}
*/
public boolean isEnqueued = false;
protected final Node representative;
/**
* May be changed during bumping in {@link CommunicationTracker.registerDependency}
*/
protected int identifier;
/**
* @since 1.7
*/
protected final CommunicationTracker tracker;
/**
* @since 1.7
*/
public CommunicationGroup(final CommunicationTracker tracker, final Node representative, final int identifier) {
this.tracker = tracker;
this.representative = representative;
this.identifier = identifier;
}
public abstract void deliverMessages();
public Node getRepresentative() {
return representative;
}
public abstract boolean isEmpty();
/**
* @since 2.0
*/
public abstract void notifyLostAllMessages(final Mailbox mailbox, final MessageSelector kind);
/**
* @since 2.0
*/
public abstract void notifyHasMessage(final Mailbox mailbox, final MessageSelector kind);
public abstract Map<MessageSelector, Collection<Mailbox>> getMailboxes();
public abstract boolean isRecursive();
@Override
public int hashCode() {
return this.identifier;
}
@Override
public String toString() {
return this.getClass().getSimpleName() + " " + this.identifier + " - representative: " + this.representative
+ " - isEmpty: " + isEmpty();
}
@Override
public boolean equals(final Object obj) {
if (obj == null || this.getClass() != obj.getClass()) {
return false;
} else if (this == obj) {
return true;
} else {
final CommunicationGroup that = (CommunicationGroup) obj;
return this.identifier == that.identifier;
}
}
@Override
public int compareTo(final CommunicationGroup that) {
return this.identifier - that.identifier;
}
}
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