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/*******************************************************************************
* Copyright (c) 2004-2008 Gabor Bergmann 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;
import java.util.Collection;
import java.util.Map;
import java.util.Map.Entry;
import tools.refinery.viatra.runtime.matchers.tuple.Tuple;
import tools.refinery.viatra.runtime.matchers.util.Direction;
import tools.refinery.viatra.runtime.rete.network.communication.Timestamp;
import tools.refinery.viatra.runtime.rete.network.mailbox.Mailbox;
/**
* ALL METHODS: FOR INTERNAL USE ONLY; ONLY INVOKE FROM {@link ReteContainer}
*
* @author Gabor Bergmann
* @noimplement This interface is not intended to be implemented by external clients.
*/
public interface Receiver extends Node {
/**
* Updates the receiver with a newly found or lost partial matching.
*
* @since 2.4
*/
public void update(final Direction direction, final Tuple updateElement, final Timestamp timestamp);
/**
* Updates the receiver in batch style with a collection of updates. The input collection consists of pairs in the
* form (t, c) where t is an update tuple and c is the count. The count can also be negative, and it specifies how
* many times the tuple t gets deleted or inserted. The default implementation of this method simply calls
* {@link #update(Direction, Tuple, Timestamp)} individually for all updates.
*
* @since 2.8
*/
public default void batchUpdate(final Collection<Map.Entry<Tuple, Integer>> updates, final Timestamp timestamp) {
for (final Entry<Tuple, Integer> entry : updates) {
int count = entry.getValue();
Direction direction;
if (count < 0) {
direction = Direction.DELETE;
count = -count;
} else {
direction = Direction.INSERT;
}
for (int i = 0; i < count; i++) {
update(direction, entry.getKey(), timestamp);
}
}
}
/**
* Returns the {@link Mailbox} of this receiver.
*
* @return the mailbox
* @since 2.0
*/
public Mailbox getMailbox();
/**
* appends a parent that will continuously send insert and revoke updates to this supplier
*/
void appendParent(final Supplier supplier);
/**
* removes a parent
*/
void removeParent(final Supplier supplier);
/**
* access active parent
*/
Collection<Supplier> getParents();
}
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