org.semanticweb.owlapi.io.RDFResource Maven / Gradle / Ivy
/*
* This file is part of the OWL API.
*
* The contents of this file are subject to the LGPL License, Version 3.0.
*
* Copyright (C) 2011, The University of Manchester
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*
*
* Alternatively, the contents of this file may be used under the terms of the Apache License, Version 2.0
* in which case, the provisions of the Apache License Version 2.0 are applicable instead of those above.
*
* Copyright 2011, University of Manchester
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.semanticweb.owlapi.io;
import java.io.Serializable;
import org.semanticweb.owlapi.model.IRI;
/**
* @author Matthew Horridge, The University of Manchester, Bio-Health
* Informatics Group, Date: 21/12/2010
* @since 3.2
*/
public class RDFResource extends RDFNode implements Serializable {
private static final long serialVersionUID = 30406L;
private final IRI resource;
private final boolean anonymous;
/**
* @param resource
* the resource
* @param anonymous
* true if the resource is anonymous
*/
public RDFResource(IRI resource, boolean anonymous) {
this.resource = resource;
this.anonymous = anonymous;
}
/**
* Create an RDFResource that is NOT anonymous.
*
* @param resource
* The IRI of the resource
*/
public RDFResource(IRI resource) {
this(resource, false);
}
@Override
public boolean isLiteral() {
return false;
}
/**
* @return the IRI
*/
public IRI getResource() {
return resource;
}
/**
* @return true if resource is anonymous
*/
public boolean isAnonymous() {
return anonymous;
}
@Override
public int hashCode() {
return resource.hashCode();
}
@Override
public boolean equals(Object o) {
if (o == this) {
return true;
}
if (!(o instanceof RDFResource)) {
return false;
}
RDFResource other = (RDFResource) o;
return resource.equals(other.resource) && anonymous == other.anonymous;
}
@Override
public String toString() {
if (!anonymous) {
return resource.toQuotedString();
} else {
return "_:" + resource;
}
}
@Override
public int compareTo(RDFNode o) {
if (o.isLiteral()) {
return 1;
}
if (equals(o)) {
return 0;
}
int diff = 0;
boolean anonA = isAnonymous();
RDFResource other = (RDFResource) o;
boolean anonB = other.isAnonymous();
if (anonA == anonB) {
// if both are anonymous or both are not anonymous,
// comparing the id() values corresponds to comparing IRIs or
// comparing bnode ids
diff = getResource().compareTo(other.getResource());
} else {
// if one is anonymous and the other is not,
// named nodes come first
if (!anonA) {
diff = -1;
} else {
diff = 1;
}
}
return diff;
}
}