org.topbraid.jenax.functions.AbstractFunction4 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.jenax.functions;
import org.apache.jena.graph.Node;
import org.apache.jena.sparql.expr.NodeValue;
import org.apache.jena.sparql.function.FunctionEnv;
/**
* An abstract superclass for Functions with 4 arguments.
*
* @author Holger Knublauch
*/
public abstract class AbstractFunction4 extends AbstractFunction {
@Override
protected NodeValue exec(Node[] nodes, FunctionEnv env) {
Node arg1 = nodes.length > 0 ? nodes[0] : null;
Node arg2 = nodes.length > 1 ? nodes[1] : null;
Node arg3 = nodes.length > 2 ? nodes[2] : null;
Node arg4 = nodes.length > 3 ? nodes[3] : null;
return exec(arg1, arg2, arg3, arg4, env);
}
protected abstract NodeValue exec(Node arg1, Node arg2, Node arg3, Node arg4, FunctionEnv env);
}