/* Copyright 2008, 2009, 2010 by the Oxford University Computing Laboratory
This file is part of HermiT.
HermiT is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
HermiT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with HermiT. If not, see <http://www.gnu.org/licenses/>.
*/
package org.semanticweb.HermiT.model;
import org.semanticweb.HermiT.Prefixes;
/**
* Represents a negation of an atomic concept.
*/
public class AtomicNegationConcept extends LiteralConcept {
private static final long serialVersionUID=-4635386233266966577L;
protected final AtomicConcept m_negatedAtomicConcept;
protected AtomicNegationConcept(AtomicConcept negatedAtomicConcept) {
m_negatedAtomicConcept=negatedAtomicConcept;
}
public AtomicConcept getNegatedAtomicConcept() {
return m_negatedAtomicConcept;
}
public LiteralConcept getNegation() {
return m_negatedAtomicConcept;
}
public boolean isAlwaysTrue() {
return m_negatedAtomicConcept.isAlwaysFalse();
}
public boolean isAlwaysFalse() {
return m_negatedAtomicConcept.isAlwaysTrue();
}
public String toString(Prefixes prefixes) {
return "not("+m_negatedAtomicConcept.toString(prefixes)+")";
}
protected Object readResolve() {
return s_interningManager.intern(this);
}
protected static InterningManager<AtomicNegationConcept> s_interningManager=new InterningManager<AtomicNegationConcept>() {
protected boolean equal(AtomicNegationConcept object1,AtomicNegationConcept object2) {
return object1.m_negatedAtomicConcept==object2.m_negatedAtomicConcept;
}
protected int getHashCode(AtomicNegationConcept object) {
return -object.m_negatedAtomicConcept.hashCode();
}
};
public static AtomicNegationConcept create(AtomicConcept negatedAtomicConcept) {
return s_interningManager.intern(new AtomicNegationConcept(negatedAtomicConcept));
}
}