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/*******************************************************************************
* Copyright (c) 2010-2014, 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.viatra.runtime.matchers.planning.operations;
import java.util.Collections;
import java.util.Set;
import tools.refinery.viatra.runtime.matchers.psystem.EnumerablePConstraint;
import tools.refinery.viatra.runtime.matchers.psystem.PConstraint;
/**
* Represents a base relation defined by the instance set of an enumerable PConstraint; there are no parent SubPlans.
*
* <p> <b>WARNING</b>: if there are coinciding variables in the variable tuple of the enumerable constraint,
* it is the responsibility of the compiler to check them for equality.
* @author Bergmann Gabor
*
*/
public class PEnumerate extends POperation {
EnumerablePConstraint enumerablePConstraint;
public PEnumerate(EnumerablePConstraint enumerablePConstraint) {
super();
this.enumerablePConstraint = enumerablePConstraint;
}
public EnumerablePConstraint getEnumerablePConstraint() {
return enumerablePConstraint;
}
@Override
public Set<? extends PConstraint> getDeltaConstraints() {
return Collections.singleton(enumerablePConstraint);
}
@Override
public int numParentSubPlans() {
return 0;
}
@Override
public String getShortName() {
return enumerablePConstraint.toString();
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime
* result
+ ((enumerablePConstraint == null) ? 0 : enumerablePConstraint
.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (!(obj instanceof PEnumerate))
return false;
PEnumerate other = (PEnumerate) obj;
if (enumerablePConstraint == null) {
if (other.enumerablePConstraint != null)
return false;
} else if (!enumerablePConstraint.equals(other.enumerablePConstraint))
return false;
return true;
}
}
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