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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.single;
import tools.refinery.viatra.runtime.matchers.tuple.Tuple;
import tools.refinery.viatra.runtime.rete.network.ReteContainer;
/**
* A filter node that keeps only those tuples that contain a certain value at a certain position.
*
* @author Bergmann Gabor
*
*/
public class ValueBinderFilterNode extends FilterNode {
int bindingIndex;
Object bindingValue;
/**
* @param reteContainer
* @param bindingIndex
* the position in the tuple that should be bound
* @param bindingValue
* the value to which the tuple has to be bound
*/
public ValueBinderFilterNode(ReteContainer reteContainer, int bindingIndex, Object bindingValue) {
super(reteContainer);
this.bindingIndex = bindingIndex;
this.bindingValue = bindingValue;
}
@Override
public boolean check(Tuple ps) {
return bindingValue.equals(ps.get(bindingIndex));
}
}
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