/*
* Copyright 2008 Fedora Commons, Inc.
*
* 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.mulgara.krule.rlog.rdf;
/**
* Represents the RDF elements found in a rule.
*
* @created May 2, 2008
* @author Paula Gearon
* @copyright © 2008 <a href="http://www.fedora-commons.org/">Fedora Commons</a>
* @licence <a href="http://www.opensource.org/licenses/apache2.0.php">Apache License, Version 2.0</a>
*/
public interface RDFNode {
/** Indicates that this node can represent anything, depending on context. */
public boolean isVariable();
/** Indicates that this node is a URI reference. */
public boolean isReference();
/** Returns a label suitable for RDF. */
public String getRdfLabel();
}