sync.pds.solver.nodes.SingleNode Maven / Gradle / Ivy
/**
* ***************************************************************************** Copyright (c) 2018
* Fraunhofer IEM, Paderborn, Germany. This program and the accompanying materials are made
* available under the terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* SPDX-License-Identifier: EPL-2.0
*
*
Contributors: Johannes Spaeth - initial API and implementation
* *****************************************************************************
*/
package sync.pds.solver.nodes;
public class SingleNode implements INode {
private Fact fact;
private int hashCode = 0;
public SingleNode(Fact fact) {
this.fact = fact;
}
@Override
public int hashCode() {
if (hashCode != 0) return hashCode;
final int prime = 31;
int result = 1;
result = prime * result + ((fact == null) ? 0 : fact.hashCode());
hashCode = result;
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null) return false;
if (getClass() != obj.getClass()) return false;
SingleNode other = (SingleNode) obj;
if (fact == null) {
if (other.fact != null) return false;
} else if (!fact.equals(other.fact)) return false;
return true;
}
@Override
public Fact fact() {
return fact;
}
@Override
public String toString() {
return fact.toString();
}
}