org.topbraid.shacl.rules.ValuesRule Maven / Gradle / Ivy
/*
* 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.topbraid.shacl.rules;
import java.util.Iterator;
import java.util.List;
import org.apache.jena.graph.Node;
import org.apache.jena.graph.Triple;
import org.apache.jena.rdf.model.RDFNode;
import org.topbraid.jenax.progress.ProgressMonitor;
import org.topbraid.shacl.engine.Shape;
import org.topbraid.shacl.expr.NodeExpression;
class ValuesRule implements Rule {
private NodeExpression expr;
private boolean inverse;
private Node predicate;
ValuesRule(NodeExpression expr, Node predicate, boolean inverse) {
this.expr = expr;
this.predicate = predicate;
this.inverse = inverse;
}
@Override
public void execute(RuleEngine ruleEngine, List focusNodes, Shape shape) {
ProgressMonitor monitor = ruleEngine.getProgressMonitor();
for(RDFNode focusNode : focusNodes) {
if(monitor != null && monitor.isCanceled()) {
return;
}
Iterator objects = expr.eval(focusNode, ruleEngine);
while(objects.hasNext()) {
RDFNode object = objects.next();
Triple triple = inverse ?
Triple.create(object.asNode(), predicate, focusNode.asNode()) :
Triple.create(focusNode.asNode(), predicate, object.asNode());
ruleEngine.infer(triple, this, shape);
}
}
}
@Override
public Node getContextNode() {
return expr.getRDFNode().asNode();
}
@Override
public Number getOrder() {
return 0;
}
@Override
public String toString() {
String label = expr.toString();
return label;
}
}