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ARQ is a SPARQL 1.1 query engine for Apache Jena
/*
* 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.
*
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership.
*/
package org.apache.jena.sparql.core;
import org.apache.jena.graph.Node;
import org.apache.jena.graph.Triple;
/** Match triples, quads, with wioldcar rules (null or {@link Node#ANY} are wildcards). */
public class Match {
public static boolean match(Quad quad, Node g, Node s, Node p, Node o) {
return
match(quad.getGraph(), g) &&
match(quad.getSubject(), s) &&
match(quad.getPredicate(), p) &&
match(quad.getObject(), o);
}
public static boolean match(Triple triple, Node s, Node p, Node o) {
return
match(triple.getSubject(), s) &&
match(triple.getPredicate(), p) &&
match(triple.getObject(), o);
}
public static boolean match(Node node, Node pattern) {
return pattern == null || pattern == Node.ANY || pattern.equals(node);
}
}